نقطة كربون كمومية

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نقاط الكربون الكمومية Carbon quantum dots وتُعرف أيضاً بإسم نقاط الكربون (وتُختصر CQDs أو C-dots أو CDs) are carbon nanoparticles which are less than 10 nm in size and have some form of surface passivation.[1][2][3]

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التاريخ

CQDs were first discovered by Xu et al. in 2004 accidentally during the purification of single-walled carbon nanotubes.[4] This discovery triggered extensive studies to exploit the fluorescence properties of CQDs.[1][5]

As a new class of fluorescent carbon nanomaterials, CQDs possess the attractive properties of high stability, good conductivity, low toxicity, environmental friendliness, simple synthetic routes as well as comparable optical properties to quantum dots.[6] Carbon quantum dots have been extensively investigated especially due to their strong and tunable fluorescence emission properties,[7] which enable their applications in biomedicine, optronics, catalysis, and sensing.[8] In most cases CQDs emits the light in a band of about several hundred nanometers in visible or near-infrared range, however it was also reported on broadband CQDs covering the spectrum from 800 to 1600 nm.[9]

Carbon dots prepared from different precursors: urea, alanine and sucrose (made by Paliienko Konstantin)

The fundamental mechanisms responsible of the fluorescence capability of CQDs are very debated. Some authors have provided evidence of size-dependent fluorescence properties, suggesting that the emission arises from electronic transitions with the core of the dots, influenced by quantum confinement effects,[10][11] whereas other works have rather attributed the fluorescence to recombination of surface-trapped charges,[12][13] or proposed a form of coupling between core and surface electronic states.[14] The excitation-dependent fluorescence of CQDs, leading to their characteristic emission tunability, has been mostly linked to the inhomogeneous distribution of their emission characteristics,[15][14] due to polydispersity, although some works have explained it as a violation of Kasha's rule arising from an unusually slow solvent relaxation.[16]


Properties of CQDs

The structures and components of CQDs determine their diverse properties.[17] Many carboxyl moieties on the CQD surface impart excellent solubility in water and biocompatibility.[7] Such surface moieties enable CQDs to serve as proton conducting nanoparticles.[18] CQDs are also suitable for chemical modification and surface passivation with various organic, polymeric, inorganic or biological materials. By surface passivation, the fluorescence properties as well as physical properties of CQDs are enhanced. Recently, it has been discovered that amine and hydroxamic acid functionalized CD can produce tricolor (green, yellow and red) emission when introduced with different pH environment and this tricolor emission can be preserved in ORMOSIL film matrix.[19] A paper published in 2019 showed that CQD can resist temperatures as high as 800 °C, paving way for applications of CQD in high temperature environments.[20] Based on carbon, CQDs possess such properties as good conductivity, benign chemical composition, photochemical and thermal stability.[بحاجة لمصدر]

Synthesis of CQDs

Synthetic methods for CQDs are roughly divided into two categories, "top-down" and "bottom-up" routes. These can be achieved via chemical, electrochemical or physical techniques.[7] The CQDs obtained could be optimized during preparation or post-treatment.[1] Modification of CQDs is also very important to get good surface properties which are essential for solubility and selected applications.[1]

Synthetic methods

"Top-down" synthetic route refers to breaking down larger carbon structures such as graphite, carbon nanotubes, and nanodiamonds into CQDs using laser ablation, arc discharge, and electrochemical techniques.[7] For example, Zhou et al. first applied electrochemical method into synthesis of CQDs.[21] They grew multi-walled carbon nanotubes on a carbon paper, then they inserted the carbon paper into an electrochemical cell containing supporting electrolyte including degassed acetonitrile and 0.1 M tetrabutyl ammonium perchlorate. Later, they applied this method in cutting CNTs or assembling CNTs into functional patterns which demonstrated the versatile callability of this method in carbon nanostructure manipulations.[22][23]

"Bottom-up" synthetic route involves synthesizing CQDs from small precursors such as carbohydrates, citrate, and polymer-silica nanocomposites through hydrothermal/solvothermal treatment, supported synthetic, and microwave synthetic routes.[24] For instance, Zhu et al. described a simple method of preparing CQDs by heating a solution of poly(ethylene glycol) (PEG) and saccharide in 500 W microwave oven for 2 to 10 min.[25] Also a laser-induced thermal shock method is exploited for synthesis ultra-broadband QCDs.[9] Recently, green synthetic approaches have also been employed for fabrication of CQDs.[26][27][28][29][30]

Size control

[1]

In addition to post-treatment, controlling the size of CQDs during the preparing process is also widely used. For instance, Zhu et al. reported hydrophilic CQDs through impregnation of citric acid precursor.[25] After pyrolyzing CQDs at 300 °C for 2 hours in air, then removing silica, followed by dialysis, they prepared CQDs with a uniform size of 1.5–2.5 nm which showed low toxicity, excellent luminescence, good photostability, and up-conversion properties.[25]

Modification

Being a new type of fluorescent nanoparticles, applications of CQD lie in the field of bioimaging and biosensing due to their biological and environmental friendly composition and excellent biocompatibility.[1] In order to survive the competition with conventional semiconductor quantum dots, a high quantum yield should be achieved. Although a good example of CQDs with ~80% quantum yield was synthesized,[31] most of the quantum dots synthesized have a quantum yield below 10% so far.[7] Surface-passivation and doping methods for modifications are usually applied for improving quantum yield.

To prevent surfaces of CQDs from being polluted by their environment, surface passivation is performed to alleviate the detrimental influence of surface contamination on their optical properties.[32] A thin insulating layer is formed to achieve surface passivation via the attachment of polymeric materials on CQDs surface treated by acid.[7]

In addition to surface passivation, doping is also a common method used to tune the properties of CQDs. Various doping methods with elements such as N,[33] S,[34] P[35] have been demonstrated for tuning the properties of CQDs, among which N doping is the most common way due to its great ability in improving the photo luminescence emissions.[36] The mechanisms by which Nitrogen doping enhances the fluorescence quantum yield of CQDs, as well as the structure of heavily N-doped CDs, are very debated issues in the literature.[37][38] Zhou et al. applied XANES and XEOL in investigating the electronic structure and luminescence mechanism in their electrochemically produced carbon QDS and found that N doping is almost certainly responsible for the blue luminescence.[39] Synthesis of new nanocomposites based on CDs have been reported with unusual properties. For example, a nanocomposite has been designed by using of CDs and magnetic Fe
3O
4 nanoparticles as precursors with nanozyme activity.[40]

Applications

CQDs with unique properties have great potential in biomedicine, optronics, catalysis and sensors[1]

[1]

Bioimaging

CQDs can be used for bioimaging due to their fluorescence emissions and biocompatibility.[41] By injecting solvents containing CQDs into a living body, images in vivo can be obtained for detection or diagnosis purposes. One example is that organic dye-conjugated CQDs could be used as an effective fluorescent probes for H
2S. The presence of H
2S could tune the blue emission of the organic dye-conjugated CQDs to green. So by using a fluorescence microscope, the organic dye-conjugated CQDs were able to visualize changes in physiologically relevant levels of H
2S.[7] Another example can be dual-mode bioimaging using their highly accessible surface functional groups to conjugate them via EDC-NHS chemistry.[42] Saladino et al. demonstrated the concept using MW-assisted synthesized nitrogen-doped excitation-independent CQDs. These were conjugated with rhodium nanoparticles – X-ray fluorescence contrast agents – leading to dual-mode nanohybrids with both optical and X-ray fluorescent properties. Moreover, the conjugation process not only accounts for dual-mode bioimaging but also passivates the rhodium nanoparticle surface, resulting in reduced cytotoxicity.[43]

Sensing

CQDs were also applied in biosensing as biosensor carriers for their flexibility in modification, high solubility in water, nontoxicity, good photostability, and excellent biocompatibility.[1] The biosensors based on CQD and CQs-based materials could be used for visual monitoring of cellular copper,[44] glucose,[45] pH,[46] trace levels of H
2O
2[40] and nucleic acid.[47] A general example is about nucleic acid lateral flow assays. The discriminating tags on the amplicons are recognized by their respective antibodies and fluorescence signals provided by the attached CQDs.[7] More generally, the fluorescence of CQDs efficiently responds to pH,[48] local polarity,[14] and to the presence of metal ions in solution,[49] which further expands their potential for nanosensing applications,[50] for instance in the analysis of pollutants.[51]


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Drug delivery

The nontoxicity and biocompatibility of CQDs enable them with broad applications in biomedicine as drug carriers, fluorescent tracers as well as controlling drug release.[52][53][54][29] This is exemplified by the use of CQDs as photosensitizers in photodynamic therapy to destroy cancer cells.[55]

Catalysis

The flexibility of functionalization with various groups CQDs makes them possible to absorb lights of different wavelengths, which offers good opportunities for applications in photocatalysis.[56] CQDs-modified P25 TiO2 composites exhibited improved photocatalytic H2 evolution under irradiation with UV-Vis. The CQDs serve as a reservoir for electrons to improve the efficiency of separating of the electron-hole pairs of P25.[57] In the recent times, metal-free CQDs have been found to improve the kinetics of hydrogen evolution reaction (HER), making CQDs a sustainable choice for catalysis.[58]

Optronics

CQDs possess the potential in serving as materials for dye-sensitized solar cells,[59] organic solar cells,[1] supercapacitor,[60] and light emitting devices.[61] CQDs can be used as photosensitizer in dye-sensitized solar cells and the photoelectric conversion efficiency is significantly enhanced.[62] CQD incorporated hybrid silica based sol can be used as transparent Fluorescent paint,[63]

Rocket fuels

Recently, CQDs have been employed in hybrid rocket fuels.[64]

Fingerprint recovery

CQDs are used for the enhancement of latent fingerprints.[65]

See also

References

  1. ^ أ ب ت ث ج ح خ د ذ ر Wang, Youfu; Hu, Aiguo (2014). "Carbon quantum dots: Synthesis, properties and applications". Journal of Materials Chemistry C. 2 (34): 6921–39. doi:10.1039/C4TC00988F.
  2. ^ Fernando, K. A. Shiral; Sahu, Sushant; Liu, Yamin; Lewis, William K.; Guliants, Elena A.; Jafariyan, Amirhossein; Wang, Ping; Bunker, Christopher E.; Sun, Ya-Ping (2015). "Carbon Quantum Dots and Applications in Photocatalytic Energy Conversion". ACS Applied Materials & Interfaces. 7 (16): 8363–76. doi:10.1021/acsami.5b00448. PMID 25845394.
  3. ^ Gao, Xiaohu; Cui, Yuanyuan; Levenson, Richard M; Chung, Leland W K; Nie, Shuming (2004). "In vivo cancer targeting and imaging with semiconductor quantum dots". Nature Biotechnology. 22 (8): 969–76. doi:10.1038/nbt994. PMID 15258594. S2CID 41561027.
  4. ^ Xu, Xiaoyou; Ray, Robert; Gu, Yunlong; Ploehn, Harry J.; Gearheart, Latha; Raker, Kyle; Scrivens, Walter A. (2004). "Electrophoretic Analysis and Purification of Fluorescent Single-Walled Carbon Nanotube Fragments". Journal of the American Chemical Society. 126 (40): 12736–7. doi:10.1021/ja040082h. PMID 15469243.
  5. ^ Kottam, Nagaraju; S P, Smrithi (2021-01-09). "'Luminescent carbon nanodots: Current prospects on synthesis, properties and sensing applications'". Methods and Applications in Fluorescence. 9 (1): 012001. Bibcode:2021MApFl...9a2001K. doi:10.1088/2050-6120/abc008. ISSN 2050-6120. PMID 33043896. S2CID 222301676.
  6. ^ Chan, Warren C.W; Maxwell, Dustin J; Gao, Xiaohu; Bailey, Robert E; Han, Mingyong; Nie, Shuming (2002). "Luminescent quantum dots for multiplexed biological detection and imaging". Current Opinion in Biotechnology. 13 (1): 40–6. doi:10.1016/S0958-1669(02)00282-3. PMID 11849956.
  7. ^ أ ب ت ث ج ح خ د Lim, Shi Ying; Shen, Wei; Gao, Zhiqiang (2015). "Carbon quantum dots and their applications". Chemical Society Reviews. 44 (1): 362–81. doi:10.1039/C4CS00269E. PMID 25316556.
  8. ^ Li, Yan; Zhao, Yang; Cheng, Huhu; Hu, Yue; Shi, Gaoquan; Dai, Liming; Qu, Liangti (2012). "Nitrogen-Doped Graphene Quantum Dots with Oxygen-Rich Functional Groups". Journal of the American Chemical Society. 134 (1): 15–8. doi:10.1021/ja206030c. PMID 22136359.
  9. ^ أ ب Sinelnik, A.D.; et al. (2023). "Ultra-Broadband Photoluminescent Carbon Dots Synthesized by Laser-Induced Thermal Shock". Laser & Photonics Reviews. 17: 2200295. doi:10.1002/lpor.202200295.
  10. ^ Ye, Ruquan; Xiang, Changsheng; Lin, Jian; Peng, Zhiwei; Huang, Kewei; Yan, Zheng; Cook, Nathan P.; Samuel, Errol L.G.; Hwang, Chih-Chau; Ruan, Gedeng; Ceriotti, Gabriel; Raji, Abdul-Rahman O.; Martí, Angel A.; Tour, James M. (2013). "Coal as an abundant source of graphene quantum dots". Nature Communications. 4: 2943. Bibcode:2013NatCo...4.2943Y. doi:10.1038/ncomms3943. PMID 24309588.
  11. ^ Li, Haitao; He, Xiaodie; Kang, Zhenhui; Huang, Hui; Liu, Yang; Liu, Jinglin; Lian, Suoyuan; Tsang, ChiHimA.; Yang, Xiaobao; Lee, Shuit-Tong (2010). "Water-Soluble Fluorescent Carbon Quantum Dots and Photocatalyst Design". Angewandte Chemie International Edition. 49 (26): 4430–4. doi:10.1002/anie.200906154. PMID 20461744.
  12. ^ Sun, Ya-Ping; Zhou, Bing; Lin, Yi; Wang, Wei; Fernando, K. A. Shiral; Pathak, Pankaj; Meziani, Mohammed Jaouad; Harruff, Barbara A.; Wang, Xin; Wang, Haifang; Luo, Pengju G.; Yang, Hua; Kose, Muhammet Erkan; Chen, Bailin; Veca, L. Monica; Xie, Su-Yuan (2006). "Quantum-Sized Carbon Dots for Bright and Colorful Photoluminescence". Journal of the American Chemical Society. 128 (24): 7756–7. doi:10.1021/ja062677d. PMID 16771487.
  13. ^ Liu, Yun; Liu, Chun-yan; Zhang, Zhi-Ying (2011). "Synthesis and surface photochemistry of graphitized carbon quantum dots". Journal of Colloid and Interface Science. 356 (2): 416–21. Bibcode:2011JCIS..356..416L. doi:10.1016/j.jcis.2011.01.065. PMID 21306724.
  14. ^ أ ب ت Sciortino, Alice; Marino, Emanuele; Dam, Bart van; Schall, Peter; Cannas, Marco; Messina, Fabrizio (2016). "Solvatochromism Unravels the Emission Mechanism of Carbon Nanodots". The Journal of Physical Chemistry Letters. 7 (17): 3419–23. doi:10.1021/acs.jpclett.6b01590. PMID 27525451.
  15. ^ Demchenko, Alexander P.; Dekaliuk, Mariia O. (2016). "The origin of emissive states of carbon nanoparticles derived from ensemble-averaged and single-molecular studies". Nanoscale. 8 (29): 14057–69. Bibcode:2016Nanos...814057D. doi:10.1039/C6NR02669A. PMID 27399599.
  16. ^ Khan, Syamantak; Gupta, Abhishek; Verma, Navneet C.; Nandi, Chayan K. (2015). "Time-Resolved Emission Reveals Ensemble of Emissive States as the Origin of Multicolor Fluorescence in Carbon Dots". Nano Letters. 15 (12): 8300–5. Bibcode:2015NanoL..15.8300K. doi:10.1021/acs.nanolett.5b03915. PMID 26566016.
  17. ^ Mintz, Keenan J.; Bartoli, Mattia; Rovere, Massimo; Zhou, Yiqun; Hettiarachchi, Sajini D.; Paudyal, Suraj; Chen, Jiuyan; Domena, Justin B.; Liyanage, Piumi Y.; Sampson, Rachel; Khadka, Durga; Pandey, Raja R.; Huang, Sunxiang; Chusuei, Charles C.; Tagliaferro, Alberto; Leblanc, Roger M. (2021). "A deep investigation into the structure of carbon dots". Carbon. 173: 433–447. doi:10.1016/j.carbon.2020.11.017. S2CID 228855625.
  18. ^ Mondal, Somen; Agam, Yuval; Amdursky, Nadav (2020). "Enhanced Proton Conductivity across Protein Biopolymers Mediated by Doped Carbon Nanoparticles". Small. 16 (50): 2005526. doi:10.1002/smll.202005526. PMID 33108059. S2CID 225083071.
  19. ^ Bhattacharya, Dipsikha; Mishra, Manish K.; De, Goutam (2017). "Carbon Dots from a Single Source Exhibiting Tunable Luminescent Colors through the Modification of Surface Functional Groups in ORMOSIL Films". Journal of Physical Chemistry C. 121 (50): 28106–16. doi:10.1021/acs.jpcc.7b08039.
  20. ^ Rimal, Vishal; Shishodia, Shubham; Srivastava, P.K. (2020). "Novel synthesis of high-thermal stability carbon dots and nanocomposites from oleic acid as an organic substrate". Applied Nanoscience. 10 (2): 455–464. doi:10.1007/s13204-019-01178-z. S2CID 203986488.
  21. ^ Zhou, Jigang; Booker, Christina; Li, Ruying; Zhou, Xingtai; Sham, Tsun-Kong; Sun, Xueliang; Ding, Zhifeng (2007). "An Electrochemical Avenue to Blue Luminescent Nanocrystals from Multiwalled Carbon Nanotubes (MWCNTs)". Journal of the American Chemical Society. 129 (4): 744–5. doi:10.1021/ja0669070. PMID 17243794.
  22. ^ Zhou, Jigang (2009). "Tailoring multi-wall carbon nanotubes for smaller nanostructures". Carbon. 47 (3): 829–838. doi:10.1016/j.carbon.2008.11.032.
  23. ^ Zhou, Jigang (2013). "An electrochemical approach to fabricating honeycomb assemblies from multiwall carbon nanotubes". Carbon. 59 (3): 130–139. doi:10.1016/j.carbon.2013.03.001.
  24. ^ Peng, Hui; Travas-Sejdic, Jadranka (2009). "Simple Aqueous Solution Route to Luminescent Carbogenic Dots from Carbohydrates". Chemistry of Materials. 21 (23): 5563–5. doi:10.1021/cm901593y.
  25. ^ أ ب ت Zhu, Hui; Wang, Xiaolei; Li, Yali; Wang, Zhongjun; Yang, Fan; Yang, Xiurong (2009). "Microwave synthesis of fluorescent carbon nanoparticles with electrochemiluminescence properties". Chemical Communications (34): 5118–20. doi:10.1039/B907612C. PMID 20448965. S2CID 205730336.
  26. ^ Phadke, Chinmay; Mewada, Ashmi; Dharmatti, Roopa; Thakur, Mukeshchand; Pandey, Sunil; Sharon, Madhuri (2015). "Biogenic Synthesis of Fluorescent Carbon Dots at Ambient Temperature Using Azadirachta indica (Neem) gum". Journal of Fluorescence. 25 (4): 1103–7. doi:10.1007/s10895-015-1598-x. PMID 26123675. S2CID 17521709.
  27. ^ Oza, Goldie; Oza, Kusum; Pandey, Sunil; Shinde, Sachin; Mewada, Ashmi; Thakur, Mukeshchand; Sharon, Maheshwar; Sharon, Madhuri (2014). "A Green Route Towards Highly Photoluminescent and Cytocompatible Carbon dot Synthesis and its Separation Using Sucrose Density Gradient Centrifugation". Journal of Fluorescence. 25 (1): 9–14. doi:10.1007/s10895-014-1477-x. PMID 25367312. S2CID 13623073.
  28. ^ Mewada, Ashmi; Pandey, Sunil; Shinde, Sachin; Mishra, Neeraj; Oza, Goldie; Thakur, Mukeshchand; Sharon, Maheshwar; Sharon, Madhuri (2013). "Green synthesis of biocompatible carbon dots using aqueous extract of Trapa bispinosa peel". Materials Science and Engineering: C. 33 (5): 2914–7. doi:10.1016/j.msec.2013.03.018. PMID 23623114.
  29. ^ أ ب Thakur, Mukeshchand; Pandey, Sunil; Mewada, Ashmi; Patil, Vaibhav; Khade, Monika; Goshi, Ekta; Sharon, Madhuri (2014). "Antibiotic Conjugated Fluorescent Carbon Dots as a Theranostic Agent for Controlled Drug Release, Bioimaging, and Enhanced Antimicrobial Activity". Journal of Drug Delivery. 2014: 282193. doi:10.1155/2014/282193. PMC 3976943. PMID 24744921.
  30. ^ Thakur, Mukeshchand; Mewada, Ashmi; Pandey, Sunil; Bhori, Mustansir; Singh, Kanchanlata; Sharon, Maheshwar; Sharon, Madhuri (2016). "Milk-derived multi-fluorescent graphene quantum dot-based cancer theranostic system". Materials Science and Engineering: C. 67: 468–77. doi:10.1016/j.msec.2016.05.007. PMID 27287144.
  31. ^ Zhu, Shoujun; Meng, Qingnan; Wang, Lei; Zhang, Junhu; Song, Yubin; Jin, Han; Zhang, Kai; Sun, Hongchen; Wang, Haiyu; Yang, Bai (2013). "Highly Photoluminescent Carbon Dots for Multicolor Patterning, Sensors, and Bioimaging". Angewandte Chemie International Edition. 52 (14): 3953–7. doi:10.1002/anie.201300519. PMID 23450679.
  32. ^ Nicollian, E. H. (1971). "Surface Passivation of Semiconductors". Journal of Vacuum Science and Technology. 8 (5): S39–S49. Bibcode:1971JVST....8S..39N. doi:10.1116/1.1316388.
  33. ^ Xu, Yang; Wu, Ming; Liu, Yang; Feng, Xi-Zeng; Yin, Xue-Bo; He, Xi-Wen; Zhang, Yu-Kui (2013). "Nitrogen-Doped Carbon Dots: A Facile and General Preparation Method, Photoluminescence Investigation, and Imaging Applications". Chemistry - A European Journal. 19 (7): 2276–83. doi:10.1002/chem.201203641. PMID 23322649.
  34. ^ Sun, Dong; Ban, Rui; Zhang, Peng-Hui; Wu, Ge-Hui; Zhang, Jian-Rong; Zhu, Jun-Jie (2013). "Hair fiber as a precursor for synthesizing of sulfur- and nitrogen-co-doped carbon dots with tunable luminescence properties". Carbon. 64: 424–34. doi:10.1016/j.carbon.2013.07.095.
  35. ^ Prasad, K. Sudhakara; Pallela, Ramjee; Kim, Dong-Min; Shim, Yoon-Bo (2013). "Microwave-Assisted One-Pot Synthesis of Metal-Free Nitrogen and Phosphorus Dual-Doped Nanocarbon for Electrocatalysis and Cell Imaging". Particle & Particle Systems Characterization. 30 (6): 557–64. doi:10.1002/ppsc.201300020. S2CID 93569150.
  36. ^ Ayala, Paola; Arenal, Raul; Loiseau, Annick; Rubio, Angel; Pichler, Thomas (2010). "The physical and chemical properties of heteronanotubes". Reviews of Modern Physics. 82 (2): 1843. Bibcode:2010RvMP...82.1843A. doi:10.1103/RevModPhys.82.1843. hdl:10261/44279.
  37. ^ Messina, F.; Sciortino, L.; Popescu, R.; Venezia, A. M.; Sciortino, A.; Buscarino, G.; Agnello, S.; Schneider, R.; Gerthsen, D.; Cannas, M.; Gelardi, F. M. (2016). "Fluorescent nitrogen-rich carbon nanodots with an unexpected β-C3N4nanocrystalline structure". Journal of Materials Chemistry C. 4 (13): 2598–605. doi:10.1039/C5TC04096E. hdl:10447/179373.
  38. ^ Zhou, Juan; Yang, Yong; Zhang, Chun-Yang (2013). "A low-temperature solid-phase method to synthesize highly fluorescent carbon nitride dots with tunable emission". Chemical Communications. 49 (77): 8605–7. doi:10.1039/C3CC42266F. PMID 23749222.
  39. ^ Zhou, Jigang; Zhou, Xingtai; Li, Ruying; Sun, Xueliang; Ding, Zhifeng; Cutler, Jeffrey; Sham, Tsun-Kong (2009). "Electronic structure and luminescence center of blue luminescent carbon nanocrystals". Chemical Physics Letters. 474 (4–6): 320–324. Bibcode:2009CPL...474..320Z. doi:10.1016/j.cplett.2009.04.075.
  40. ^ أ ب Yousefinejad, Saeed; Rasti, Hamid; Hajebi, Mehdi; Kowsari, Masoud; Sadravi, Shima; Honarasa, Fatemeh (2017). "Design of C-dots/Fe3O4 magnetic nanocomposite as an efficient new nanozyme and its application for determination of H2O2 in nanomolar level". Sensors and Actuators B: Chemical. 247 (August): 691–6. doi:10.1016/j.snb.2017.02.145.
  41. ^ Oza, Goldie; Ravichandran, M.; Merupo, Victor-Ishrayelu; Shinde, Sachin; Mewada, Ashmi; Ramirez, Jose Tapia; Velumani, S.; Sharon, Madhuri; Sharon, Maheshwar (2016). "Camphor-mediated synthesis of carbon nanoparticles, graphitic shell encapsulated carbon nanocubes and carbon dots for bioimaging". Scientific Reports. 6: 21286. Bibcode:2016NatSR...621286O. doi:10.1038/srep21286. PMC 4764906. PMID 26905737.
  42. ^ Kilic, Nüzhet Inci (2021). Graphene Quantum Dots as Fluorescent and Passivation Agents for Multimodal Bioimaging.
  43. ^ Saladino, Giovanni M.; Kilic, Nuzhet I.; Brodin, Bertha; Hamawandi, Bejan; Yazgan, Idris; Hertz, Hans M.; Toprak, Muhammet S. (September 2021). "Carbon Quantum Dots Conjugated Rhodium Nanoparticles as Hybrid Multimodal Contrast Agents". Nanomaterials (in الإنجليزية). 11 (9): 2165. doi:10.3390/nano11092165. ISSN 2079-4991. PMC 8470909. PMID 34578481.
  44. ^ Zhu, Anwei; Qu, Qiang; Shao, Xiangling; Kong, Biao; Tian, Yang (2012). "Carbon-Dot-Based Dual-Emission Nanohybrid Produces a Ratiometric Fluorescent Sensor for InVivo Imaging of Cellular Copper Ions". Angewandte Chemie International Edition. 51 (29): 7185–9. doi:10.1002/anie.201109089. PMID 22407813.
  45. ^ Shi, Wenbing; Wang, Qinlong; Long, Yijuan; Cheng, Zhiliang; Chen, Shihong; Zheng, Huzhi; Huang, Yuming (2011). "Carbon nanodots as peroxidase mimetics and their applications to glucose detection". Chemical Communications. 47 (23): 6695–7. doi:10.1039/C1CC11943E. PMID 21562663. S2CID 23383050.
  46. ^ Shi, Wen; Li, Xiaohua; Ma, Huimin (2012). "A Tunable Ratiometric pH Sensor Based on Carbon Nanodots for the Quantitative Measurement of the Intracellular pH of Whole Cells". Angewandte Chemie International Edition. 51 (26): 6432–5. doi:10.1002/anie.201202533. PMID 22644672.
  47. ^ Li, Hailong; Zhang, Yingwei; Wang, Lei; Tian, Jingqi; Sun, Xuping (2011). "Nucleic acid detection using carbon nanoparticles as a fluorescent sensing platform". Chemical Communications. 47 (3): 961–3. doi:10.1039/C0CC04326E. PMID 21079843. S2CID 11066086.
  48. ^ Kong, Weiguang; Wu, Huizhen; Ye, Zhenyu; Li, Ruifeng; Xu, Tianning; Zhang, Bingpo (2014). "Optical properties of pH-sensitive carbon-dots with different modifications". Journal of Luminescence. 148: 238–42. Bibcode:2014JLum..148..238K. doi:10.1016/j.jlumin.2013.12.007.
  49. ^ Chaudhary, Savita; Kumar, Sandeep; Kaur, Bhawandeep; Mehta, S. K. (2016). "Potential prospects for carbon dots as a fluorescence sensing probe for metal ions". RSC Advances. 6 (93): 90526–36. Bibcode:2016RSCAd...690526C. doi:10.1039/C6RA15691F.
  50. ^ Bogireddy, Naveen Kumar Reddy; Barba, Victor; Agarwal, Vivechana (2019). "Nitrogen-Doped Graphene Oxide Dots-Based "Turn-OFF" H2O2, Au(III), and "Turn-OFF–ON" Hg(II) Sensors as Logic Gates and Molecular Keypad Locks". ACS Omega. 4 (6): 10702–10713. doi:10.1021/acsomega.9b00858. PMC 6648105. PMID 31460168.
  51. ^ Cayuela, Angelina; Laura Soriano, M.; Valcárcel, Miguel (2013). "Strong luminescence of Carbon Dots induced by acetone passivation: Efficient sensor for a rapid analysis of two different pollutants". Analytica Chimica Acta. 804: 246–51. doi:10.1016/j.aca.2013.10.031. PMID 24267089.
  52. ^ Mewada, Ashmi; Pandey, Sunil; Thakur, Mukeshchand; Jadhav, Dhanashree; Sharon, Madhuri (2014). "Swarming carbon dots for folic acid mediated delivery of doxorubicin and biological imaging". Journal of Materials Chemistry B. 2 (6): 698–705. doi:10.1039/C3TB21436B. PMID 32261288.
  53. ^ Pandey, Sunil; Mewada, Ashmi; Thakur, Mukeshchand; Tank, Arun; Sharon, Madhuri (2013). "Cysteamine hydrochloride protected carbon dots as a vehicle for the efficient release of the anti-schizophrenic drug haloperidol". RSC Advances. 3 (48): 26290–6. Bibcode:2013RSCAd...326290P. doi:10.1039/C3RA42139B.
  54. ^ Pandey, Sunil; Thakur, Mukeshchand; Mewada, Ashmi; Anjarlekar, Dhanashree; Mishra, Neeraj; Sharon, Madhuri (2013). "Carbon dots functionalized gold nanorod mediated delivery of doxorubicin: Tri-functional nano-worms for drug delivery, photothermal therapy and bioimaging". Journal of Materials Chemistry B. 1 (38): 4972–82. doi:10.1039/C3TB20761G. PMID 32261087.
  55. ^ Juzenas, Petras; Kleinauskas, Andrius; George Luo, Pengju; Sun, Ya-Ping (2013). "Photoactivatable carbon nanodots for cancer therapy". Applied Physics Letters. 103 (6): 063701. Bibcode:2013ApPhL.103f3701J. doi:10.1063/1.4817787.
  56. ^ Kim, Jinhyun; Lee, Sahng Ha; Tieves, Florian; Choi, Da Som; Hollmann, Frank; Paul, Caroline E.; Park, Chan Beum (15 October 2018). "Biocatalytic C=C Bond Reduction through Carbon Nanodot‐Sensitized Regeneration of NADH Analogues". Angewandte Chemie International Edition. 57 (42): 13825–13828. doi:10.1002/anie.201804409. PMID 30062834. S2CID 51870319.
  57. ^ Mandal, Tapas K.; Parvin, Nargish (2011). "Rapid Detection of Bacteria by Carbon Quantum Dots". Journal of Biomedical Nanotechnology. 7 (6): 846–8. doi:10.1166/jbn.2011.1344. PMID 22416585.
  58. ^ Rimal, Vishal; Mahapatra, Susanta Sinha; Srivastava, Prem Kumar (2022-10-15). "Metal-free oleic acid-derived carbon dots as efficient catalysts for hydrogen evolution reaction". Journal of Applied Electrochemistry (in الإنجليزية). 53 (2): 285–295. doi:10.1007/s10800-022-01780-0. ISSN 0021-891X. S2CID 252950678.
  59. ^ Xie, Shilei; Su, Hua; Wei, Wenjie; Li, Mingyang; Tong, Yexiang; Mao, Zongwan (2014). "Remarkable photoelectrochemical performance of carbon dots sensitized TiO2 under visible light irradiation". Journal of Materials Chemistry A. 2 (39): 16365–8. doi:10.1039/C4TA03203A.
  60. ^ Zhu, Yirong; Ji, Xiaobo; Pan, Chenchi; Sun, Qingqing; Song, Weixin; Fang, Laibing; Chen, Qiyuan; Banks, Craig E. (2013). "A carbon quantum dot decorated RuO2 network: Outstanding supercapacitances under ultrafast charge and discharge". Energy & Environmental Science. 6 (12): 3665–75. doi:10.1039/C3EE41776J.
  61. ^ Zhang, Xiaoyu; Zhang, Yu; Wang, Yu; Kalytchuk, Sergii; Kershaw, Stephen V.; Wang, Yinghui; Wang, Peng; Zhang, Tieqiang; Zhao, Yi; Zhang, Hanzhuang; Cui, Tian; Wang, Yiding; Zhao, Jun; Yu, William W.; Rogach, Andrey L. (2013). "Color-Switchable Electroluminescence of Carbon Dot Light-Emitting Diodes". ACS Nano. 7 (12): 11234–41. doi:10.1021/nn405017q. PMID 24246067.
  62. ^ Ma, Zheng; Zhang, Yong-Lai; Wang, Lei; Ming, Hai; Li, Haitao; Zhang, Xing; Wang, Fang; Liu, Yang; Kang, Zhenhui; Lee, Shuit-Tong (2013). "Bioinspired Photoelectric Conversion System Based on Carbon-Quantum-Dot-Doped Dye–Semiconductor Complex". ACS Applied Materials & Interfaces. 5 (11): 5080–4. doi:10.1021/am400930h. PMID 23668995.
  63. ^ Mishra, Manish Kr; Chakravarty, Amrita; Bhowmik, Koushik; De, Goutam (2015). "Carbon nanodot–ORMOSIL fluorescent paint and films". Journal of Materials Chemistry C. 3 (4): 714–9. doi:10.1039/C4TC02140A. S2CID 54851790.
  64. ^ Oztan, Cagri; Ginzburg, Eric; Akin, Mert; Zhou, Yiqun; Leblanc, Roger M.; Coverstone, Victoria (2021). "3D printed ABS/paraffin hybrid rocket fuels with carbon dots for superior combustion performance". Combustion and Flame. 225: 428–434. doi:10.1016/j.combustflame.2020.11.024. S2CID 229419770.
  65. ^ Fernandes, Diogo; Krysmann, Marta J.; Kelarakis, Antonios (2015). "Carbon dot based nanopowders and their application for fingerprint recovery". Chemical Communications. 51 (23): 4902–4905. doi:10.1039/C5CC00468C. PMID 25704392.

Further reading

  • Bourlinos, Athanasios B.; Stassinopoulos, Andreas; Anglos, Demetrios; Zboril, Radek; Karakassides, Michael; Giannelis, Emmanuel P. (2008). "Surface Functionalized Carbogenic Quantum Dots". Small. 4 (4): 455–8. Bibcode:2008APS..MARY30007B. doi:10.1002/smll.200700578. PMID 18350555.
  • Li, Haitao; He, Xiaodie; Liu, Yang; Huang, Hui; Lian, Suoyuan; Lee, Shuit-Tong; Kang, Zhenhui (2011). "One-step ultrasonic synthesis of water-soluble carbon nanoparticles with excellent photoluminescent properties". Carbon. 49 (2): 605–9. doi:10.1016/j.carbon.2010.10.004.
  • Zong, Jie; Zhu, Yihua; Yang, Xiaoling; Shen, Jianhua; Li, Chunzhong (2011). "Synthesis of photoluminescent carbogenic dots using mesoporous silica spheres as nanoreactors". Chem. Commun. 47 (2): 764–6. doi:10.1039/C0CC03092A. PMID 21069221.
  • Krysmann, Marta J.; Kelarakis, Antonios; Dallas, Panagiotis; Giannelis, Emmanuel P. (2012). "Formation Mechanism of Carbogenic Nanoparticles with Dual Photoluminescence Emission". Journal of the American Chemical Society. 134 (2): 747–50. doi:10.1021/ja204661r. PMID 22201260.
  • Chandra, Sourov; Patra, Prasun; Pathan, Shaheen H.; Roy, Shuvrodeb; Mitra, Shouvik; Layek, Animesh; Bhar, Radhaballabh; Pramanik, Panchanan; Goswami, Arunava (2013). "Luminescent S-doped carbon dots: An emergent architecture for multimodal applications". Journal of Materials Chemistry B. 1 (18): 2375–82. doi:10.1039/C3TB00583F. PMID 32261072.
  • Kim, Jinhyun; Lee, Sahng Ha; Tieves, Florian; Choi, Da Som; Hollmann, Frank; Paul, Caroline E.; Park, Chan Beum (15 October 2018). "Biocatalytic C=C Bond Reduction through Carbon Nanodot‐Sensitized Regeneration of NADH Analogues". Angewandte Chemie International Edition. 57 (42): 13825–13828. doi:10.1002/anie.201804409. PMID 30062834. S2CID 51870319.
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