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External environment sensitive circularly polarized luminescence properties of a chiral boron difluoride complex.

ABSTRACT: A chiral Schiff-base boron difluoride complex bearing a diethylamino group was synthesized. Its photophysical properties were investigated and compared with those of its non-substituted analogue. The complex was found to exhibit solvatofluorochromism with bluish-white emission in moderately polar solvents and intense blue emission in nonpolar solvent. Circularly polarized luminescence (CPL) properties were also examined and it was found that the absolute value of the luminescence dissymmetry factor (g _lum) increases significantly in the KBr-dispersed pellet state compared to the solution state. Notably, CPL intensity of the complex enhanced approximately three times upon addition of CH₃SO₃H in CH₂Cl₂. Density functional theory (DFT) calculations were conducted to further understand the photophysical properties.

SUBMITTER: Ikeshita M

PROVIDER: S-EPMC9724127 | biostudies-literature | 2022 Nov

REPOSITORIES: biostudies-literature

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External environment sensitive circularly polarized luminescence properties of a chiral boron difluoride complex.

Ikeshita Masahiro M He Hongxi H Kitahara Maho M Imai Yoshitane Y Tsuno Takashi T

RSC advances 20221101 53

A chiral Schiff-base boron difluoride complex bearing a diethylamino group was synthesized. Its photophysical properties were investigated and compared with those of its non-substituted analogue. The complex was found to exhibit solvatofluorochromism with bluish-white emission in moderately polar solvents and intense blue emission in nonpolar solvent. Circularly polarized luminescence (CPL) properties were also examined and it was found that the absolute value of the luminescence dissymmetry fac ...[more]

PMID: 36540273

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