作者: Nicholas H. C. Lewis , Graham R. Fleming
DOI: 10.1021/ACS.JPCLETT.6B00037
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摘要: We present two-dimensional electronic-vibrational (2DEV) spectra of isolated chlorophyll a and b in deuterated ethanol. excite the Q-band electronic transitions measure effects on carbonyl C ═ double-bond stretch region infrared spectrum. With aid density functional theory calculations, we provide assignments for major features show how 2DEV can be used to readily distinguish different solvation states chlorophyll, with corresponding minority pentacoordinate magnesium (Mg) species being resolved along each dimension from dominant hexacoordinate Mg species. These represent crucial first step toward application spectroscopy chlorophyll-containing pigment-protein complexes.