White-light emission strategy of a single organic compound with aggregation-induced emission and delayed fluorescence properties

Zongliang Xie; Chengjian Chen; Shidang Xu; Jun Li; Yi Zhang; Siwei Liu; Jiarui Xu; Zhenguo Chi

doi:10.1002/anie.201502180

White-light emission strategy of a single organic compound with aggregation-induced emission and delayed fluorescence properties

Angew Chem Int Ed Engl. 2015 Jun 8;54(24):7181-4. doi: 10.1002/anie.201502180. Epub 2015 Apr 29.

Authors

Zongliang Xie¹, Chengjian Chen¹, Shidang Xu¹, Jun Li¹, Yi Zhang², Siwei Liu¹, Jiarui Xu¹, Zhenguo Chi³

Affiliations

¹ PCFM Lab and GD HPPC Lab, Guangdong Engineering Technology Research Center for High-performance Organic and Polymer Photoelectric Functional Films, State Key Laboratory of Optoelectronic Material and Technologies, School of Chemistry and Chemical Engineering, Sun Yat-sen University, Guangzhou 510275 (China).
² PCFM Lab and GD HPPC Lab, Guangdong Engineering Technology Research Center for High-performance Organic and Polymer Photoelectric Functional Films, State Key Laboratory of Optoelectronic Material and Technologies, School of Chemistry and Chemical Engineering, Sun Yat-sen University, Guangzhou 510275 (China). ceszy@mail.sysu.edu.cn.
³ PCFM Lab and GD HPPC Lab, Guangdong Engineering Technology Research Center for High-performance Organic and Polymer Photoelectric Functional Films, State Key Laboratory of Optoelectronic Material and Technologies, School of Chemistry and Chemical Engineering, Sun Yat-sen University, Guangzhou 510275 (China). chizhg@mail.sysu.edu.cn.

PMID: 25925015
DOI: 10.1002/anie.201502180

Abstract

A novel white-light-emitting organic molecule, which consists of carbazolyl- and phenothiazinyl-substituted benzophenone (OPC) and exhibits aggregation-induced emission-delayed fluorescence (AIE-DF) and mechanofluorochromic properties was synthesized. The CIE color coordinates of OPC were directly measured with a non-doped powder, which presented white-emission coordinates (0.33, 0.33) at 244 K to 252 K and (0.35, 0.35) at 298 K. The asymmetric donor-acceptor-donor' (D-A-D') type of OPC exhibits an accurate inherited relationship from dicarbazolyl-substituted benzophenone (O2C, D-A-D) and diphenothiazinyl-substituted benzophenone (O2P, D'-A-D'). By purposefully selecting the two parent molecules, that is, O2C (blue) and O2P (yellow), the white-light emission of OPC can be achieved in a single molecule. This finding provides a feasible molecular strategy to design new AIE-DF white-light-emitting organic molecules.

Keywords: aggregation-induced emission; delayed fluorescence; dual emission; white-light emission.