碳60·双二苯基膦乙烷合钯的合成和光电转化性能

Synthesis and Photoelectric Property of Complexe C_(60)Pd(Ph_2PCH_2CH_2PPh_2)

在氮气氛中采用配体取代法合成了富勒烯双齿膦配合物C80Pd(Ph2PCH2CH2PPh2),采用元素分析、红外光谱、紫外可见光谱、光电子能谱以及X射线粉末衍射等手段对产物进行表征,研究了产物的氧化还原性能及热稳定性能.在光电化学电池中测定了C60Pd(Ph2PCH2CH2PPh2) 在GaAs电极上形成n+n型异质结光伏效应,结果表明:产物具有优良的光电转化性能,尤其是在Fe(CN)63-/Fe(CN)64-介质电对中,光生电压最大达到367mV;当C60Pd(Ph2PCH2CH2PPh2) 薄膜厚度为1μm时,光伏效应值最大.

In the present work, the fullerene complexe C60Pd（Ph2PCH2CH2PPh2） was perpared by the method of ligand substitution via the reaction of C60 with Pd（Ph2PCH2CH2PPh2）2 in nitrogen atmosphere under refluxing, and the title compound was characterized by the methods of elemental analysis , FT-IR, UV-vis, XPS,XRD. The result shows that the structure of purposeful product is that the Ph2PCH2CH2PPh2 took up two coordination sites of the central metal, and C60 took up another two sites in σ -π feedback pattern. Meanwhile the properties on redox and the thermostability were studied, the redox research indicates that the reduction potential of the complexe is more negative than that of the pure C60. And the research on the photovoltaic effect for C60 Pd（Ph2PCH2CH2PPh2） complex which forming n＋n heterojunction with GaAs electrode in photoelectrochemical cell shows that the photoelectric property of C60Pd（Ph2PCH2CH2PPh2） is excellent, especially in the Fe（CN）6^3-/Fe（CN）6^4- redox couple mediator. The photovoltaic property of C60Pd（Ph2PCH2CH2PPh2） electrode at 1μm for thickness of C60Pd（Ph2PCH2CH2PPh2） is the best, the photopotential value is up to 367 mV.