Boosting Circularly Polarized Luminescence of Organic Conjugated Systems via Twisted Intramolecular Charge Transfer

Junfeng Li, Chenxi Hou, Chao Huang, Shanqi Xu, Xuelei Peng, Qi Qi, Wen Yong Lai, Wen Yong Lai, Wei Huang

Research output: Contribution to journalArticlepeer-review

42 Scopus citations

Abstract

Realizing a high luminescence dissymmetry factor (glum) is a paramount yet challenging issue in the research field of circularly polarized luminescence (CPL). Here, we reported a novel set of organic conjugated systems with twisted intramolecular charge transfer (TICT) characteristics based on conjugated o-carborane-binaphthyl dyads composing of binaphthyl units as chiral electron donors and o-carborane units as achiral electron acceptors, demonstrating intense CPL with large glum values. Interestingly, single-crystalline o-1 exhibited a high-level brightness and a large glum factor as high as +0.13, whereas singlecrystalline o-2 processed a relatively low brightness with a decreased glum value to-0.04. The significant diversity of CPL-active properties was triggered by the selective introduction of o-carborane units onto the binaphthyl units. Benefiting from the large magnetic dipole transition moments in TICT states, the CPL activity of TICT o-carborane-based materials exhibited amplified circular polarization. This study provides an efficient molecular engineering strategy for the rational design and development of highly efficient CPL-active materials. 1.

Original languageEnglish
Article number3839160
JournalResearch
Volume2020
DOIs
StatePublished - 22 Apr 2020

Fingerprint

Dive into the research topics of 'Boosting Circularly Polarized Luminescence of Organic Conjugated Systems via Twisted Intramolecular Charge Transfer'. Together they form a unique fingerprint.

Cite this