光致电子从藻红蛋白转移至胶体金属半导体纳米颗粒。
Photoinduced electron transfer from phycoerythrin to colloidal metal semiconductor nanoparticles.
作者信息
Kathiravan A, Chandramohan M, Renganathan R, Sekar S
机构信息
School of Chemistry, Bharathidasan University, Tiruchirappalli 620 024, Tamil Nadu, India.
出版信息
Spectrochim Acta A Mol Biomol Spectrosc. 2009 Apr;72(3):496-501. doi: 10.1016/j.saa.2008.10.021. Epub 2008 Oct 28.
Phycoerythrin is a water soluble pigment which absorbs in the visible region at 563 nm. The interaction of phycoerythrin with colloidal metal semiconductors was studied by absorption, FT-IR and fluorescence spectroscopy. Phycoerythrin adsorbed strongly on the surface of TiO(2) nanoparticles, the apparent association constant for the association between colloidal metal-TiO(2) nanoparticles and phycoerythrin was determined from fluorescence quenching data. The free energy change (DeltaG(et)) for electron transfer process has been calculated by applying Rehm-Weller equation.
藻红蛋白是一种水溶性色素，在可见光区域563纳米处有吸收。通过吸收光谱、傅里叶变换红外光谱和荧光光谱研究了藻红蛋白与胶体金属半导体的相互作用。藻红蛋白强烈吸附在TiO(2)纳米颗粒表面，根据荧光猝灭数据确定了胶体金属-TiO(2)纳米颗粒与藻红蛋白之间缔合的表观缔合常数。通过应用雷姆-韦勒方程计算了电子转移过程的自由能变化(ΔG(et))。
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