聚3-己基噻吩的制备及其荧光轨迹的研究

本文以3-己基噻吩为单体,无水FeCl3为氧化剂,在四氢呋喃(THF)中浓缩结晶制备了聚3-己基噻吩(P3HT),通过红外光谱、GPC、XRD和1H NMR表征其结构,测定了经THF浓缩前后P3HT的电流-电压曲线,并采用单分子光谱技术得到了其在介孔纳米TiO2基底上的荧光强度轨迹。结果表明,通过THF浓缩结晶能提高P3HT的相对分子量和其太阳能电池的能量转化效率,并且单分子P3HT/TiO2体系间界面电子的转移是不均一的,不但随着分子的不同而不同,而且还随着时间的不同而不同,其自相关函数呈非指数的衰减。

Synthesis and Fluorescence Trajectory Study of Poly(3-hexylthiophene)

Poly(3-hexylthiophene)(P3HT) was synthesized by using 3-hexylthiophene as monomer,anhydrous ferric chloride(FeCl3) as oxidant and then was concentrated in tetrahydrofuran.Gel permeation chromatography(GPC),FT-IR,XRD and 1H NMR were used to characterize the structure of P3HT.The current-voltage curve of P3HT was determined.At the same time,the fluorescence intensity trajectory of the single-molecule P3HT/TiO2system was obtained by using single-molecule fluorescence spectroscopy.The result showed that molecular weight of P3HT and the efficiency of organic solar cells could be improved after concentration.Single-molecule interfacial electron transfer(ET) dynamics was inhomogeneous from molecule to molecule and from time to time.The nonexponential autocorrelation function was decayed.