文献类型：期刊文献

英文题名：Room-Temperature Phosphorescence Enabled through Nacre-Mimetic Nanocomposite Design

作者：Yao, Xuyang[1,2,3];Wang, Jie[1,2,4];Jiao, Dejin[1,2];Huang, Zizhao[4];Mhirsi, Oumaima[1,2];Lossada, Francisco[1,2];Chen, Lisa[5];Haehnle, Bastian[5];Kuehne, Alexander J. C.[5];Ma, Xiang[4];Tian, He[4];Walther, Andreas[1,2,3,6]

机构：[1]Univ Freiburg, Inst Macromol Chem, Adapt & Autonomous Bioinspired Mat, A3BMS Lab Act, Stefan Meier Str 31, D-79104 Freiburg, Germany;[2]Univ Freiburg, Freiburg Mat Res Ctr FMF, Stefan Meier Str 21, D-79104 Freiburg, Germany;[3]Univ Freiburg, Freiburg Inst Adv Studies FRIAS, Albertstr 19, D-79104 Freiburg, Germany;[4]East China Univ Sci & Technol, Sch Chem & Mol Engn, Feringa Nobel Prize Scientist Joint Res Ctr,Inst, Key Lab Adv Mat & Joint Int Res Lab Precis Chem &, 130 Meilong Rd, Shanghai 200237, Peoples R China;[5]Ulm Univ, Inst Organ & Macromol Chem, Albert Einstein Allee 11, D-89081 Ulm, Germany;[6]Johannes Gutenberg Univ Mainz, Dept Chem, D-55128 Mainz, Germany

年份：2021

卷号：33

期号：5

外文期刊名：ADVANCED MATERIALS

收录：;EI(收录号：20205109666505);WOS:【SCI-EXPANDED(收录号:WOS:000600414700001)】；

基金：X.Y. and J.W. contributed equally to this work. The authors gratefully acknowledge financial support from VW A125456. J.W. acknowledges support from the China Scholarship Council (CSC) for a scholarship, NSFC (21788102, 22020102006, and 21722603), and X.Y. thanks the USIAS-FRIAS for a post-doctoral fellowship. A.J.C.K. acknowledges funding from the BMBF via a NanoMatFutur AktiPhotoPol (13N13522) research group.Open access funding enabled and organized by Projekt DEAL.

语种：英文

外文关键词：nacre‐ mimetics; nanocomposites; oxygen barrier; room‐ temperature phosphorescence

摘要：A generic, facile, and waterborne strategy is introduced to fabricate flexible, low-cost nanocomposite films with room-temperature phosphorescence (RTP) by incorporating waterborne RTP polymers into self-assembled bioinspired polymer/nanoclay nanocomposites. The excellent oxygen barrier of the lamellar nanoclay structure suppresses the quenching effect from ambient oxygen (k(q)) and broadens the choice of polymer matrices towards lower glass transition temperature (T-g), while providing better mechanical properties and processability. Moreover, the oxygen permeation and diffusion inside the films can be fine-tuned by varying the polymer/nanoclay ratio, enabling programmable retention times of the RTP signals, which is exploited for transient information storage and anti-counterfeiting materials. Additionally, anti-interception materials are showcased by tracing the interception-induced oxygen history that interferes with the preset self-erasing time. Merging bioinspired nanocomposite design with RTP materials contributes to overcoming the inherent limitations of molecular design of organic RTP compounds, and allows programmable temporal features to be added into RTP materials by controlled mesostructures. This will assist in paving the way for practical applications of RTP materials as novel anti-counterfeiting materials.