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†

Ningchao Liu,^a Xiaojuan Lv,^a Bentian Xiao,^a Daiki Kuzuhara,*^b Peifeng Mei,^c Naoki Aratani,

^c Hiroko Yamada,

^c Fengxian Qiu,

*^a Jianming Pan*^a and Songlin Xue

*^a

Author affiliations

* Corresponding authors

^a School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, China
E-mail: fxqiu@ujs.edu.cn, pjm@ujs.edu.cn, slxue@ujs.edu.cn

^b Faculty of Science and Engineering, Iwate University, 4-3-5 Ueda, Morioka 020-8551, Japan
E-mail: kuzuhara@iwate-u.ac.jp

^c Division of Materials Science, Nara Institute of Science and Technology (NAIST), 8916-5 Takayama-cho, Ikoma, Nara 630-0192, Japan

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.

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

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

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