Revisiting absorption and electronic circular dichroism spectra of cholesterol in solution: a joint experimental and theoretical study

Literature Information

Publication Date 2018-02-06
DOI 10.1039/C7CP07713K
Impact Factor 3.676
Authors

Andrea Bonvicini, Laure Guilhaudis, Vincent Tognetti, Didier Desmaële, Nathalie Sauvonnet, Hassan Oulyadi, Laurent Joubert


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Abstract

Cholesterol is doubtless one of the most studied bio-molecules, which unfortunately features low emitting properties, precluding its in vivo study by fluorescence experiments. The design of fluorescent analogues of cholesterol is thus an appealing challenge in biochemistry, which simultaneously requires minor changes in its chemical structure (to retain main biological properties) and considerable enhancement of light emission. To this aim, the photochemical behaviour of the native molecule has to be deeply understood. In this work, we focused our attention on the electronic absorption of cholesterol in several common organic solutions, combining experimental (through ultraviolet-visible and electronic circular dichroism spectroscopy) and theoretical approaches (at the time-dependent density functional theory level) in order to solve the important discrepancies previously reported in the literature on the maximum absorption wavelengths and on the nature (Rydberg and/or π → π*) of the associated electronic transition.

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Source Journal

Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics
CiteScore: 5.5
Self-citation Rate: 10.3%
Articles per Year: 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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