Semiconducting Conjugated Polymer鈥揑norganic Tetrapod Nanocomposites
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- 作者：Jaehan Jung ; Xinchang Pang ; Chaowei Feng ; Zhiqun Lin
- 刊名：Langmuir
- 出版年：2013
- 出版时间：June 25, 2013
- 年：2013
- 卷：29
- 期：25
- 页码：8086-8092
- 全文大小：501K
- 年卷期：v.29,no.25(June 25, 2013)
- ISSN：1520-5827
文摘
Cadmium telluride (CdTe) tetrapods were synthesized via multiple injections of the Te precursor by utilizing bifunctional ligands. Subsequently, tetrapod-shaped semiconducting inorganic鈥搊rganic nanocomposites (i.e., P3HT鈥揅dTe tetrapod nanocomposites) were produced by directly grafting conjugated polymer ethynyl-terminated poly(3-hexylthiophene) (i.e., P3HT鈥撯墶) onto azide-functionalized CdTe tetrapods (i.e., CdTe鈥揘3) via a catalyst-free click chemistry. The intimate contact between P3HT and CdTe tetrapod rendered the effective dispersion of CdTe tetrapods in nanocomposites and facilitated their efficient electronic interaction. The success of coupling reaction was confirmed by Fourier transform infrared spectroscopy and nuclear magnetic resonance spectroscopy. The grafting density of P3HT chains on the CdTe tetrapods was estimated by thermogravimetric analysis. The photophysical properties of P3HT鈥揅dTe tetrapod nanocomposites were studied using UV鈥搗is and photoluminescence spectroscopies. These intimate semiconducting conjugated polymer鈥搕etrapod nanocomposites may offer a maximized interface between conjugated polymers and tetrapods for efficient charge separation and enhanced charge transport regardless of their orientation for potential application in hybrid solar cells with improved power conversion efficiency.