首页|High-Temperature Resistance Photoluminescence Carbonized Polymer Dots Through Equilibrium Bi-Confinement Effects

High-Temperature Resistance Photoluminescence Carbonized Polymer Dots Through Equilibrium Bi-Confinement Effects

扫码查看
原文链接
  • NETL
  • NSTL
  • Wiley
Carbon dots are emerging luminescent nanomaterials that have drawnconsiderable attention due to their abundance， environmental friendliness， andcustomizable optical properties。 However， their susceptibility to temperatureinducedvibrational exciton changes and the tendency to thermal quenching ofemission have hindered their practical applications。 Here， a method is reportedfor achieving high-temperature photoluminescence carbonized polymer dots(CPDs) through a bi-confinement approach that involves a highly cross-linkedpolymer network and a rigid Al_2O_3 matrix。 As the temperature increased from303 to 500 K， the fluorescence and phosphorescence emission intensitiesof CPDs@Al_2O_3 remained virtually unchanged， with the emission durationexceeding 150 h at 500 K。 Additionally， CPDs@Al_2O_3 composites with differentdegrees of carbonization exhibit dynamic excitation-dependent photoluminescenceproperties， which can be patterned for multiple information encryptionapplication。 This work provides a concept for designing stable and luminousCPDs under harsh conditions， thus expanding their potential application range。

Al_2O_3 matrixcarbon dotsdynamic information encryptionhightemperature photoluminescence

Yu Shen、Chengyang Luo、Cheng Chen、Xinglong Zhang、Minghao Shi、Zhida Gu、Ruifa Su、Yitong Wang、Linpo Li、Liangjun Wang、Suoying Zhang、Fengwei Huo、Weina Zhang

展开 >

Key Laboratory of Flexible Electronics (KLOFE)Institute of Advanced Materials (IAM) & School of Flexible Electronics(Future Technologies)Nanjing Tech University30 SouthPuzhu Road, Nanjing 211816, China||State Key Laboratory of Organic Electronics and Information Displays(SKLOEID)Institute of Advanced Materials (IAM)School of Chemistry and Life SciencesNanjingUniversity of Posts and Telecommunications9Wenyuan Road,Nanjing 210023, China

Key Laboratory of Flexible Electronics (KLOFE)Institute of Advanced Materials (IAM) & School of Flexible Electronics(Future Technologies)Nanjing Tech University30 SouthPuzhu Road, Nanjing 211816, China

2025

10.1002/adma.202407811

Advanced Materials

Advanced Materials

ISSN：0935-9648
年,卷(期)：2025.37(5)
  • 42