TY - JOUR
T1 - Carbon Dots and Stability of Their Optical Properties
AU - Javed, Nasir
AU - O'Carroll, Deirdre M.
N1 - Funding Information:
This work was supported, in part, by funding from the U. S. National Science Foundation, grant DMR‐1554954. N.J. acknowledges funding from the Institute of International Education, Fulbright grant program.
Publisher Copyright:
© 2021 Wiley-VCH GmbH
PY - 2021/4
Y1 - 2021/4
N2 - Carbon dots (CDs) are a new class of materials which have been extensively studied due to their unique optical properties, low toxicity, and abundance of raw materials to synthesize them. In this minireview, it is highlighted that the stability of the optical properties of CDs is an important aspect that has received very little attention. While CDs are usually considered to be photostable, several recent reports show they are prone to photobleaching. Studies of blinking, photobleaching, and photoswitching of CDs are reviewed here. It is noted that there is a lack of systematic studies about the photostability of CDs, and efforts are needed to further study this aspect. Furthermore, it is observed that the stability of CDs is somewhat related to their photoluminescence quantum yield, excitation dependence of PL emission, precursor, and synthesis method used to produce CDs.
AB - Carbon dots (CDs) are a new class of materials which have been extensively studied due to their unique optical properties, low toxicity, and abundance of raw materials to synthesize them. In this minireview, it is highlighted that the stability of the optical properties of CDs is an important aspect that has received very little attention. While CDs are usually considered to be photostable, several recent reports show they are prone to photobleaching. Studies of blinking, photobleaching, and photoswitching of CDs are reviewed here. It is noted that there is a lack of systematic studies about the photostability of CDs, and efforts are needed to further study this aspect. Furthermore, it is observed that the stability of CDs is somewhat related to their photoluminescence quantum yield, excitation dependence of PL emission, precursor, and synthesis method used to produce CDs.
KW - blinking
KW - carbon dots
KW - photobleaching
KW - photostability
KW - photoswitching
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U2 - 10.1002/ppsc.202000271
DO - 10.1002/ppsc.202000271
M3 - Review article
AN - SCOPUS:85102247846
SN - 0934-0866
VL - 38
JO - Particle and Particle Systems Characterization
JF - Particle and Particle Systems Characterization
IS - 4
M1 - 2000271
ER -