Swift heavy ion irradiation-induced structural and conformational changes in polypyrrole nanofibers

被引：2
|
作者：
Banerjee, Somik [1 ]
Kumar, A. [1 ]
机构：
[1] Tezpur Univ, Dept Phys, Mat Res Lab, Tezpur 784028, Assam, India
来源：
RADIATION EFFECTS AND DEFECTS IN SOLIDS | 2011年 / 166卷 / 8-9期
关键词：
polypyrrole nanofibres; swift heavy ions; TEM; XRD; micro-Raman spectroscopy; TRANSIENT THERMAL-PROCESS; POLYMERS; RAMAN; SURFACE; METALS; TRACKS; STATES;
D O I：
10.1080/10420150.2010.542560
中图分类号：
TL [原子能技术]; O571 [原子核物理学];
学科分类号：
0827 ; 082701 ;
摘要：
In the present paper, we report a detailed analysis of the fluence-dependent conformational and structural changes induced in the polypyrrole nanofibers (PPy NFs) upon swift heavy ion (SHI) irradiation. PPy NFs, synthesized using a cationic surfactant cetyltrimethylammonium bromide-assisted micellar polymerization technique, have been irradiated with 90 MeV O(7+) ions at normal beam incidence with fluence varying from 3 x 10(10) to 1 x 10(12) ions/cm(2) using a 15UD Pelletron accelerator under ultra-high vacuum. X-ray diffraction studies reveal a decrease in the domain length and an increase in the strain upon SHI irradiation. A decrease in the integral intensity upon SHI irradiation indicates the amorphization of the material. Micro-Raman (mu R) studies confirm amorphization of the PPy NFs and also show that the PPy NFs get de-doped upon SHI irradiation. mu R spectroscopy also reveals a benzenoid to quinoid transition in the PPy chain upon SHI irradiation.
引用
收藏
页码：598 / 605
页数：8
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