期刊
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
卷 21, 期 28, 页码 15504-15514出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c9cp00907h
关键词
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资金
- COST Action [CM1405-MOLIM]
- Bulgarian National Science Fund [DCOST01/05/2017]
- H2020-MSCA-ITN-2017 European Training Network Computational Spectroscopy In Natural sciences and Engineering (COSINE) [765739]
We present a combined theoretical and experimental study on the UV-vis spectra of enol-keto (EK) and keto-keto (KK) tautomeric forms of curcumin dissolved in aqueous solution. Solvent effects have been investigated by resorting to the implicit polarizable continuum model (QM/PCM) and non-polarizable and fully polarizable QM/MM approaches, the latter based on the fluctuating charges (FQ) force-field. In particular, all methods are challenged to rationalize the contribution of conformational, electrostatic and polarization effects in the calculation of the vertical excitation spectra of curcumin tautomers. The obtained results highlight that for both tautomers specific solute-solvent hydrogen-bond interactions play a minor role with respect to conformational and electrostatic effects.
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