A porphyrin(2.1.2.1) bis-boron complex as a deep-red AIE luminophore induced by intermolecular F-π interaction

Ningchao Liu; Xiaojuan Lv; Bentian Xiao; Daiki Kuzuhara; Peifeng Mei; Naoki Aratani; Hiroko Yamada; Fengxian Qiu; Jianming Pan; Songlin Xue

doi:10.1039/d2dt01289h

A porphyrin(2.1.2.1) bis-boron complex as a deep-red AIE luminophore induced by intermolecular F-π interaction

Dalton Trans. 2022 Jun 27;51(25):9606-9610. doi: 10.1039/d2dt01289h.

Authors

Affiliations

¹ School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, 212013, China. fxqiu@ujs.edu.cn.
² Faculty of Science and Engineering, Iwate University, 4-3-5 Ueda, Morioka 020-8551, Japan. kuzuhara@iwate-u.ac.jp.
³ Division of Materials Science, Nara Institute of Science and Technology (NAIST), 8916-5 Takayama-cho, Ikoma, Nara 630-0192, Japan.

PMID: 35687010
DOI: 10.1039/d2dt01289h

Abstract

Mono-/diboron complexes with saddle-shaped molecular conformations were synthesized from porphyrins(2.1.2.1). The boron complexes have unique structure-dependent photophysical properties: (a) monoboron complexes 2a and 2b are not emissive in solution and the solid state, (b) diboron complex 3a shows red emission in toluene, and (c) diboron complex 3b shows aggregation-induced emission (AIE) in the deep-red region due to intermolecular secondary interactions (F-π). This is the first case of a boron porphyrinoid complex that shows AIE emission in the deep-red region in decades.