Carbon Dots‐Inked Paper with Single/Two‐Photon Excited Dual‐Mode Thermochromic Afterglow for Advanced Dynamic Information Encryption
University of Macau · Jiangsu University · +1 more institution
Abstract
Abstract Achieving thermochromic afterglow (TCAG) in a single material for advanced information encryption remains a significant challenge. Herein, TCAG in carbon dots (CDs)‐inked paper (CDs@Paper) is achieved by tuning the temperature‐dependent dual‐mode afterglow of room temperature phosphorescence (RTP) and thermally activated delayed fluorescence (TADF). The CDs are synthesized through thermal treatment of levofloxacin in melting boric acid with postpurification via dialysis. CDs@Paper exhibit both TCAG and excitation‐dependent afterglow color properties. The TCAG of CDs@Paper exhibits dynamic color changes from blue at high temperatures to yellow at low temperatures by adjusting the proportion of the…
Citation impact
- FWCI
- 15.26
- Percentile
- 100%
- References
- 37
Authors
8Topics & keywords
- Afterglow
- Materials science
- Thermochromism
- Excited state
- Encryption
- Carbon fibers
- Mode (computer interface)
- Nanotechnology