Excited state dynamics of a Bodipy derivative with a twisted molecular structure: Combined experimental and theoretical studies.

IF 3.1 2区化学 Q3 CHEMISTRY, PHYSICAL

Journal of Chemical Physics Pub Date : 2025-02-07 DOI:10.1063/5.0245843

Bei Li, Sheng Liao, Jiayu Li, Xi Chen, Xue Zhang, Jianzhang Zhao, Ming-De Li, Bernhard Dick, Gloria Mazzone, Gagik G Gurzadyan

引用次数: 0

Abstract

The photophysical properties of a boron dipyrromethene (Bodipy, BDP) derivative (BDP-SA) in which one F atom at the BDP core was replaced by an O atom and condensed with salicylaldehyde were investigated. This compound has a twisted molecular structure and unusually low fluorescence quantum yield (1% in toluene). No intersystem crossing was observed with a nanosecond transient absorption study. The triplet state lifetime of BDP-SA was determined to be 115 μs by photosensitizing. Femtosecond transient absorption shows a structure relaxation of ∼1.5 ps for the S1 excited state. Theoretical studies show conical intersections, which are responsible for the efficient non-radiative decay of the S1 state, which has extremely weak fluorescence.

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来源期刊

Journal of Chemical Physics 物理-物理：原子、分子和化学物理

CiteScore

7.40

自引率

15.90%

发文量

1615

审稿时长

2 months

期刊介绍： The Journal of Chemical Physics publishes quantitative and rigorous science of long-lasting value in methods and applications of chemical physics. The Journal also publishes brief Communications of significant new findings, Perspectives on the latest advances in the field, and Special Topic issues. The Journal focuses on innovative research in experimental and theoretical areas of chemical physics, including spectroscopy, dynamics, kinetics, statistical mechanics, and quantum mechanics. In addition, topical areas such as polymers, soft matter, materials, surfaces/interfaces, and systems of biological relevance are of increasing importance. Topical coverage includes: Theoretical Methods and Algorithms Advanced Experimental Techniques Atoms, Molecules, and Clusters Liquids, Glasses, and Crystals Surfaces, Interfaces, and Materials Polymers and Soft Matter Biological Molecules and Networks.