Investigation of ESIPT in a panel of chromophores presenting N–H⋯N intramolecular hydrogen bonds

文献信息

发布日期 2014-09-30
DOI 10.1039/C4CP03223C
影响因子 3.676
作者

Pierre O. Hubin, Adèle D. Laurent, Daniel P. Vercauteren


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摘要

Thermodynamic and kinetic aspects of excited state intramolecular proton transfer (ESIPT) are investigated in 11 chromophores harboring an intramolecular N–H⋯N hydrogen bond [pyridyl pyrazole, pyridyl pyrrole, azaindole, pyridyl indole, pyrroloquinoline, and an analogue of the Blue Fluorescent Protein (BFP) chromophore] with the help of quantum mechanical calculations. For pyridyl pyrazoles, simulated spectra are used to help the interpretation of experimental ones and the effects of several substituents are investigated. Then it is shown that Time-Dependent Density Functional Theory fails to satisfactorily describe the energetic aspects of ESIPT for the BFP chromophore analogue. Equation-of-Motion Coupled Cluster theory is thus used to reach accurate insights for this challenging case.

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来源期刊

Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics
CiteScore: 5.5
自引率: 10.3%
年发文量: 3036

Physical Chemistry Chemical Physics (PCCP) is an international journal co-owned by 19 physical chemistry and physics societies from around the world. This journal publishes original, cutting-edge research in physical chemistry, chemical physics and biophysical chemistry. To be suitable for publication in PCCP, articles must include significant innovation and/or insight into physical chemistry; this is the most important criterion that reviewers and Editors will judge against when evaluating submissions. The journal has a broad scope and welcomes contributions spanning experiment, theory, computation and data science. Topical coverage includes spectroscopy, dynamics, kinetics, statistical mechanics, thermodynamics, electrochemistry, catalysis, surface science, quantum mechanics, quantum computing and machine learning. Interdisciplinary research areas such as polymers and soft matter, materials, nanoscience, energy, surfaces/interfaces, and biophysical chemistry are welcomed if they demonstrate significant innovation and/or insight into physical chemistry. Joined experimental/theoretical studies are particularly appreciated when complementary and based on up-to-date approaches.

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