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Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 2, Pages 206-216 doi: 10.1007/s11705-022-2203-x
Keywords: PEDOT:PSS ultrafast laser transparent electrode ST-PSCs patterning
Facile and Scalable Preparation of Fluorescent Carbon Dots for Multifunctional Applications Article
Dan Wang,Zhiyong Wang,Qiuqiang Zhan,Yuan Pu,Jie-Xin Wang,Neil R. Foster,Liming Dai
Engineering 2017, Volume 3, Issue 3, Pages 402-408 doi: 10.1016/J.ENG.2017.03.014
The synthesis of fluorescent nanomaterials has received considerable attention due to the great potential of these materials for a wide range of applications, from chemical sensing through bioimaging to optoelectronics. Herein, we report a facile and scalable approach to prepare fluorescent carbon dots (FCDs) via a one-pot reaction of citric acid with ethylenediamine at 150 °C under ambient air pressure. The resultant FCDs possess an optical bandgap of 3.4 eV and exhibit strong excitation-wavelength-independent blue emission (λEm = 450 nm) under either one- or two-photon excitation. Owing to their low cytotoxicity and long fluorescence lifetime, these FCDs were successfully used as internalized fluorescent probes in human cancer cell lines (HeLa cells) for two-photon excited imaging of cells by fluorescence lifetime imaging microscopy with high-contrast resolution. They were also homogenously mixed with commercial inks and used to draw fluorescent patterns on normal papers and on many other substrates (e.g., certain flexible plastic films, textiles, and clothes). Thus, these nanomaterials are promising for use in solid-state fluorescent sensing, security labeling, and wearable optoelectronics.
Keywords: Scalable Carbon dots Two-photon Fluorescence lifetime imaging Patterning
Title Author Date Type Operation
Ultrafast-laser-treated poly(3,4-ethylenedioxythiophene): poly(styrenesulfonate) electrodes with enhanced conductivity and transparency for semitransparent perovskite solar cells
Journal Article