Computational modeling of curcumin-based fluorescent probe molecules

Vardhan Satalkar, Theo A. Rusmore, Elizabeth Phillips, Xiaoliang Pan, Enrico Benassi, Qin Wu, Chongzhao Ran, Yihan Shao

Результат исследования: Материалы для журналаСтатья

Аннотация

In recent years, a series of curcumin analogs have been designed as fluorescent probes for detecting and imaging A β peptide aggregates and reactive oxygen species (ROS) in Alzheimer’s disease (AD) brains. In order to gain a better understanding of the photophysical properties of these probe molecules, a systematical computational investigation was performed using the time-dependent density functional theory (TDDFT) calculations. Computed absorption and emission wavelengths well reproduced the spectral shifts among the curcumin analogs. In particular, for a recently proposed pair of probe molecules, CRANAD-5 and CRANAD-61, for sensing ROS in preclinical studies of AD brains, their emission wavelength difference was found to arise from a delocalization of the lowest unoccupied molecular orbital of CRANAD-61 from the curcuminoid backbone to the oxalate moiety. Overall, this study reaffirms the value of employing TDDFT calculations to assist the design of new curcumin-based fluorescence probes for AD research.

Язык оригиналаАнглийский
Артикульный номер29
ЖурналTheoretical Chemistry Accounts
Том138
Номер выпуска2
DOI
Статус публикацииОпубликовано - 1 фев 2019

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ASJC Scopus subject areas

  • Physical and Theoretical Chemistry

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