文献类型：期刊文献

英文题名：Conformation-Dependent Phosphorescence of Galactose-Decorated Phosphors and Assembling-Induced Phosphorescence Enhancement

作者：Yuan, Zhiyi[1,2];Zou, Lei[1,2];Chang, Dongdong[1,2];Ma, Xiang[1,2]

机构：[1]East China Univ Sci & Technol, Frontiers Sci Ctr Materiobiol & Dynam Chem, Key Lab Adv Mat, Sch Chem & Mol Engn, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Frontiers Sci Ctr Materiobiol & Dynam Chem, Feringa Nobel Prize Scientist Joint Res Ctr, Sch Chem & Mol Engn, Shanghai 200237, Peoples R China

年份：2020

卷号：12

期号：46

起止页码：52059

外文期刊名：ACS APPLIED MATERIALS & INTERFACES

收录：;EI(收录号：20204809548431);WOS:【SCI-EXPANDED(收录号:WOS:000592923100092)】；

基金：This work was financially supported by NSFC (21788102, 22020102006, 21722603 and 21871083), Program of Shanghai Academic/Technology Research Leader (20XD1421300), Project supported by "Shu Guang" project supported by Shanghai Municipal Education Commission and Shanghai Education Development Foundation (19SG26), the Innovation Program of Shanghai Municipal Education Commission (2017-01-07-00-02-E00010), Shanghai Municipal Science and Technology Major Project (grant no. 2018SHZDZX03), and Fundamental Research Funds for the Central Universities. The authors thank Dr. B. Ding, Dr. T. Jiang, L. Ma, and Z. Huang for helpful discussions.

语种：英文

外文关键词：room temperature phosphorescence; conformation effect; supramolecular assembling rigid effect; stimuli-responsiveness

摘要：Amorphous organic room-temperature phosphorescent (RTP) materials are promising for their facile preparation and processability, while the conformation effects of phosphors at amorphous state are lack of study in comparison with the rigid effects due to the commonly irregular assembling and dispersal of phosphors in rigid systems. Herein, we report a series of phosphorescent molecules modified by polyhydroxy galactose, whose RTP emission at the amorphous state can be regulated by controlling the conformational distortion of the phosphorescent segments. Further, a strong RTP emission is facilely obtained by the co-assembling between polyhydroxy phosphors and polyhydroxy matrices (alpha-CD, beta-CD, and chitosan). Owing to the rigid effect of the enhanced hydrogen bonding cross-linking, the highest RTP quantum yield reaches 19.4%; whereas, the RTP emissions of assemblies become conformation insensitive. The conflicting relationship between the conformation effect and rigid effect is attributed to the differences between aggregated single-component systems and dispersed assembling systems. Besides, the unique and different moisture responsiveness of the co-assembling samples is discovered and further applied in data encryption. The research expands the scope for designing amorphous pure organic RTP materials with supramolecular strategies and shows a modularized approach for assembling-enhanced phosphorescence.