%0 Journal Article
%T Switching between Phosphorescence and Fluorescence Controlled by Chiral Self©\Assembly
%A Guofeng Liu
%J Archive of "Advanced Science".
%D 2017
%R 10.1002/advs.201700021
%X Helical self©\assembly plays a unique role in regulating the localized excitations of ¦Ð functional systems, which can also bring highly multi©\scale orders, and show a special effect to tune the energy of electronics, vibration, and rotation of molecules. Due to controllable and dynamic property of chiral self©\assembly, highly ordered and helical assemblies can be obtained to exhibit amplification effect and fascinating photophysical properties in photoluminescence. However, an effective control of singlet©\triplet emissive switching in a unimolecular platform remains a great challenge. Recently, switchable singlet©\triplet emission induced by helical self©\assembly in a unimolecular platform has been developed. By taking advantage of the helical self©\assembly driven by multiple intermolecular hydrogen bonding and strong ¦Ð©\¦Ð stacking interactions, reversible switching between fluorescence and phosphorescence could be efficiently achieved both in N,N©\dimethylformamide/H2O solution and the solid state. The results will inspire the design of other intelligent luminescent materials through chiral self©\assembly and be valuable for interdisciplinary development of supramolecular self©\assembly and related materials science
%K helical structures
%K mechanoluminescence
%K phosphorescent©\fluorescent switching
%K self©\assembly
%K supramolecular chirality
%U https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5604387/