Effect of SWNT Defects on the Electron Transfer Properties in P3HT/SWNT Hybrid Materials
Effect of SWNT Defects on the Electron Transfer Properties in P3HT/SWNT Hybrid Materials
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DOI：
10.1002/adfm.200800496
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发表时间：
2008-09-23
影响因子：
19
通讯作者：
Jung, Hee-Tae
中科院分区：
文献类型：
--
作者：
Geng, Jianxin;Kong, Byung-Seon;Jung, Hee-Tae
利用一系列表面缺陷含量不同的单壁碳纳米管制备了聚3-己基噻吩（P3 HT）与单壁碳纳米管（SWNTs）的杂化材料。通过利用P3 HT和单壁碳纳米管之间的π-π相互作用来合成杂化物。导致碳纳米管在P3 HT溶液中的有效分散。紫外-可见光谱和光致发光（PL）光谱表明，碳纳米管对杂化材料中P3 HT的PL有猝灭作用，说明光激发的P3 HT向单壁碳纳米管发生了电子转移。这种从P3 HT到碳纳米管的电子转移被单壁碳纳米管表面缺陷的存在所破坏，然而，发现杂化物中的P3 HT的PL寿命与溶液中的纯P3 HT的PL寿命相同，表明P3 HT/单壁碳纳米管形成基态非荧光复合物。
Poly(3-hexylthiophene) (P3HT) hybrids with single-walled carbon nanotubes (SWNTs) were prepared using a series of SWNTs with various defect contents on their surfaces. The hybrids were synthesized by exploiting the pi-pi interaction between P3HT and the SWNTs. resulting in efficient dispersion of the carbon nanotubes in the P3HT solution. UV-visible and photoluminescence (PL) spectra showed that the carbon nanotubes quench the PL of P3HT in the hybrids, indicating that electron transfer occurs from photo-excited P3HT to the SWNTs. This electron transfer from P3HT to carbon nanotubes was disrupted by the presence of defects on the SWNT surfaces, However, the PL lifetime of P3HT in the hybrids was found to be the same as that of pure P3HT in solution, indicating the formation of a ground-state non-fluorescent complex of P3HT/SWNTs.