叶绿素a-环糊精复合物的光物理和电化学性质
Photophysical and electrochemical properties of chlorophyll a-cyclodextrins complexes.
作者信息
Dentuto Pasquale Luca, Catucci Lucia, Cosma Pinalysa, Fini Paola, Agostiano Angela
机构信息
Dipartimento di Chimica, Università di Bari, via Orabona 4 I-70126 Bari, Italy.
出版信息
Bioelectrochemistry. 2004 Jun;63(1-2):117-20. doi: 10.1016/j.bioelechem.2003.09.019.
In this work, we have studied the interactions between two different cyclodextrins (CDs) and chlorophyll a (Chl a) in the presence of electrolyte by means of absorption, fluorescence spectroscopy, circular dichroism and cyclic voltammetry. The results obtained indicate that the presence of both CDs gives rise to an increase of Chl a solubility in water. In particular, heptakis-(2,3,6-tri-O-methyl)-beta-cyclodextrin (TRIMEB) favours the dissolution of Chl a monomer in aqueous solution, whereas the presence of hydroxypropyl-beta-cyclodextrin (beta-HP-CD) promotes the pigment aggregation.
在本研究中，我们借助吸收光谱、荧光光谱、圆二色光谱和循环伏安法，研究了在电解质存在的情况下两种不同环糊精（CDs）与叶绿素a（Chl a）之间的相互作用。所得结果表明，两种环糊精的存在均会使Chl a在水中的溶解度增加。具体而言，七（2,3,6-三-O-甲基）-β-环糊精（TRIMEB）有利于Chl a单体在水溶液中的溶解，而羟丙基-β-环糊精（β-HP-CD）的存在则促进了色素聚集。
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