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Full‐Color and White Circularly Polarized Luminescence of Hydrogen‐Bonded Ionic Organic Microcrystals
Author(s) -
Li ZhongQiu,
Gong ZhongLiang,
Shao JiangYang,
Yao Jiannian,
Zhong YuWu
Publication year - 2021
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.202103091
Subject(s) - luminescence , hydrogen bond , fluorescence , protonation , pyridinium , photochemistry , materials science , sulfonic acid , molecule , chemistry , crystallography , optoelectronics , polymer chemistry , ion , organic chemistry , optics , physics
A simple and general method is presented herein for the in situ preparations of circularly polarized luminescence (CPL)‐active microcrystals with a large luminescence dissymmetry factor g lum , high fluorescence quantum efficiency ( Φ FL ), wide emission color tenability, and well‐ordered morphology. The reactions of pyridine‐containing achiral molecules 1 – 7 with chiral camphor sulfonic acid ((±)‐CSA) gave crystalline microplates formed by hydrogen bonding interactions between the protonated pyridinium units and the sulfonic anions. The chiral information of CSA are effectively transferred to the microcrystals by hydrogen bonding to afford full‐color CPL from deep‐blue to red with g lum in the order of 10 −2 and Φ FL up to 80 %. Moreover, organic microcrystals with high‐performance white CPL ( Φ FL =46 %; | g lum |=0.025) are achieved via the light‐harvesting energy transfer between blue and yellow emitters.