文献类型：期刊文献

英文题名：Distorted Molecular Conformation Enabled Supramolecular Dynamics in Elastic Organic Single Crystals

作者：Lin, Hui-Yao[1,2];Li, Le[1,2];Hou, Jia-Wang[1,2];Li, Jiayi[1,2];Yu, Chengyuan[1,2];Zhao, Weijun[1,2];Tong, Fei[1,2];Qu, Da-Hui[1,2]

机构：[1]East China Univ Sci & Technol, Frontiers Sci Ctr Materiobiol & Dynam Chem, Sch Chem & Mol Engn, Inst Fine Chem,Key Lab Adv Mat,Feringa Nobel Prize, Meilong Rd 130, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Frontiers Sci Ctr Materiobiol & Dynam Chem, Sch Chem & Mol Engn, Sch Chem & Mol Engn,Inst Fine Chem,Joint Int Res L, Meilong Rd 130, Shanghai 200237, Peoples R China

年份：2025

卷号：13

期号：24

外文期刊名：ADVANCED OPTICAL MATERIALS

收录：;EI(收录号：20252418598122);WOS:【SCI-EXPANDED(收录号:WOS:001503804100001)】；

基金：This work was supported by the National Natural Science Foundation of China (22025503, 22375063, 22220102004), Science and Technology Commission of Shanghai Municipality (24DX1400200, 23JC1401700), the Innovation Program of Shanghai Municipal Education Commission (2023ZKZD40), the Programme of Introducing Talents of Discipline to Universities (grant no. B16017) and the Fundamental Research Funds for the Central Universities. The authors thank Research Center of Analysis and Test of East China University of Science and Technology for the help on the characterization. The authors thank Dr. Xiujun Liu for the single-crystal testing and analysis.

语种：英文

外文关键词：birefringence extinction; crystal engineering; elastic molecular crystals; mechanical properties; optical waveguides

摘要：The exploration of elastic organic crystals holds excellent significance for modulating the mechanical properties of the crystal lattice and related practical applications. Instead of fabricating classic planar molecules that assemble in typical criss-cross packing structures in a crystal lattice, this work presents a new dynamic organic crystal (anthracen-9-ylmethyl 4-nitrobenzoate, pNBA) with non-planar twisted molecular conformations through supramolecular interactions. A pNBA single crystal exhibits superior mechanical properties with enhanced elasticity, toughness, and deformability (reversible bending >100 cycles, coiling, and twisting), capable of enduring weights over 4500-fold of its mass. It is revealed that the crystal elasticity can be dynamically regulated with the crystal thickness, ranging from fully elastic to plastic morphing upon mechanical stress. Moreover, single crystals are comparable to commercial optical waveguides and birefringence components with ultralow loss coefficients (532-935 nm) and high birefringence (0.209@546 nm). This work provides new strategies for flexible organics and expands the boundaries of functional crystalline materials.