Effect of microsolvation on the non-radiative decay of the eumelanin monomer

文献信息

发布日期 2019-11-11
DOI 10.1039/C9CP05166J
影响因子 3.676
作者

Paulami Ghosh, Debashree Ghosh


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摘要

Eumelanin is a polymeric structure made of di-hydroxyindole (DHI) as the basic motif. In order to understand the photoprotection process in eumelanin, it is imperative to understand the photoprocesses in its monomers. These photoprocesses are affected by the presence of neighboring molecules, such as water molecules, in the biological environment. Therefore, we elucidate the effect of microsolvation on the photoprocesses of DHI. As seen from previous studies on DHI, there are quite a few deactivation channels for the molecule subsequent to its excitation within the UV-visible range. In the presence of microsolvation, we notice that these deactivation channels change in their energetics. However, there is always the presence of ultrafast deactivation channels and in some cases the deactivation is expected to be faster in the presence of a single water molecule as compared to the gas phase.

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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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