Issue 11, 2021, Issue in Progress

Bridging-arylene effects on spectroscopic and photophysical properties of arylborane–dipyrrinato zinc(ii) complexes

Abstract

Novel bis(dipyrrinato)zinc(II) derivatives having 4-[bis(2,4,6-trimethylphenyl)boryl]phenyl (ZnBph) or 4-[bis(2,4,6-trimethylphenyl)boryl]-2,3,5,6-tetramethylphenyl groups (ZnBdu) at the 5-position of the dipyrrinato ligands were designed and synthesized. In ZnBph with the smaller dipyrrinate–arylene and arylene–dimesitylboryl dihedral angles, an intramolecular charge transfer arising from the presence of the vacant p orbital on the boron atom participates in the ππ* excited state in character in contrast to the pure ππ* excited state of ZnBdu. The synergistic ππ*/ILCT excited state was weakly fluorescent, and the fluorescence was enhanced upon binding of fluoride to the boron atom.

Graphical abstract: Bridging-arylene effects on spectroscopic and photophysical properties of arylborane–dipyrrinato zinc(ii) complexes

Supplementary files

Article information

Article type
Paper
Submitted
23 Oct 2020
Accepted
23 Jan 2021
First published
03 Feb 2021
This article is Open Access
Creative Commons BY-NC license

RSC Adv., 2021,11, 6259-6267

Bridging-arylene effects on spectroscopic and photophysical properties of arylborane–dipyrrinato zinc(II) complexes

K. Takaki, E. Sakuda, A. Ito, S. Horiuchi, Y. Arikawa and K. Umakoshi, RSC Adv., 2021, 11, 6259 DOI: 10.1039/D0RA09029H

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