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Hydrostatic Pressure‐Controlled Ratiometric Luminescence Responses of Dibenzo[a,j]phenazine‐Cored Mechanoluminophore

Lookup NU author(s): Professor Thomas Penfold

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This is the authors' accepted manuscript of an article that has been published in its final definitive form by Wiley - VCH Verlag GmbH & Co. KGaA, 2019.

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Abstract

Understanding changes to excited state properties under the influence of an external stimuli, such as pressure or temperature, is important in the context of optimizing molecular components for a number of applications including sensors and imaging reagents. Herein, we use UV/vis, fluorescence and excitation spectroscopies, and fluorescence lifetime measurements supported by calculations to probe the effect of hydrostatic pressure on the excited state characteristics of a conformationally‐divergent mechanochromic compound in toluene and methylcyclohexane. We demonstrate that hydrostatic pressure can be used to manipulate the equilibria between excited state conformers. This work provides new perspectives for mechanoresponsive materials and as attractive alternative to conventional ratiometric sensors.

Publication metadata

Author(s): Takeda Y, Mizuno H, Okada Y, Okazaki M, Minakata S, Penfold TJ, Fukuhara G

Publication type: Article

Publication status: Published

Journal: ChemPhotoChem

Year: 2019

Volume: 3

Issue: 12

Pages: 1203-1211

Print publication date: 01/12/2019

Online publication date: 07/08/2019

Acceptance date: 07/08/2019

Date deposited: 10/08/2019

ISSN (electronic): 2367-0932

Publisher: Wiley - VCH Verlag GmbH & Co. KGaA

URL: https://doi.org/10.1002/cptc.201900190

DOI: 10.1002/cptc.201900190

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