文献类型：期刊文献

英文题名：Dual-emitting film with cellulose nanocrystal-assisted carbon dots grafted SrAl2O4, Eu2+, Dy3+ phosphors for temperature sensing

作者：Zhang, Longfei[1,2] Lyu, Shaoyi[1,2] Zhang, Qijun[2] Wu, Yuntao[3] Melcher, Chuck[3] Chmely, Stephen C.[2] Chen, Zhilin[1] Wang, Siqun[2]

第一作者：张龙飞;Zhang, Longfei

通信作者：Chen, ZL[1];Wang, SQ[2]

机构：[1]Chinese Acad Forestry, Res Inst Wood Ind, Hunan Collaborat Innovat Ctr Effect Utilizing Woo, Beijing 100091, Peoples R China;[2]Univ Tennessee, Ctr Renewable Carbon, Knoxville, TN 37996 USA;[3]Univ Tennessee, Scintillat Mat Res Ctr, Knoxville, TN 37996 USA

年份：2019

卷号：206

起止页码：767-777

外文期刊名：CARBOHYDRATE POLYMERS

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000452982700086)】；

基金：This work was supported by the Fundamental Research Funds of the Chinese Academy of Forestry for Wood Composites and Chemical Utilization Program (CAFYBB2017ZX003), as well as the USDA National Institute of Food and Agriculture (Hatch Project 1012359). The authors also acknowledge financial support from the China Scholarship Council.

语种：英文

外文关键词：Cellulose; Carbon dots; Fluorescence; Temperature; Film

摘要：In this study, we synthesized a novel dual-emitting fluorescent phosphor from cellulose nanocrystal (CNC)-assisted carbon dots (CDs)-grafted SrAl2O4, Eu2+, Dy3+ (SAO) through a facile core-shell process. The CNC-CDs-coated SAO presents excellent scattered dual-emission and improved water resistance without destruction of the SrAl2O4 crystals. The phosphors were then reacted with coupling amino-silane and assembled with nanofibrillated cellulose skeletons to create flexible isotropic films. The obtained phosphors and hybrid films were characterized via electron microscopy, photoluminescence analysis, and X-ray photoelectron spectroscopy. The results demonstrate that the optical signals of phosphors can be controlled by CDs content. The assembled cellulose films exhibit strong temperature responses, high light-induced scattering, and good flexibility. The luminescent emission of films is highly sensitive to surrounding temperature variation (243-383 K) and good linearity behavior was obtained for such a sensitive sensor. Such flexible nanofibrillated cellulose films are excellent candidates for temperature sensor devices in industrial applications.