反相微乳液中制备的聚吡咯纳米管的传感行为：换能器尺寸和转换机制的影响。

Sensing behaviors of polypyrrole nanotubes prepared in reverse microemulsions: effects of transducer size and transduction mechanism.

作者信息

Yoon Hyeonseok, Chang Mincheol, Jang Jyongsik

机构信息

Hyperstructured Organic Materials Research Center, School of Chemical Engineering, College of Engineering, Seoul National University, Shinlimdong 56-1, Seoul 151-742, Korea.

出版信息

J Phys Chem B. 2006 Jul 27;110(29):14074-7. doi: 10.1021/jp061423b.

DOI:10.1021/jp061423b

PMID:16854102

Abstract

Polypyrrole (PPy) nanotubes with different diameters were readily fabricated using cylindrical micelle templates in sodium bis(2-ethylhexyl) sulfosuccinate (AOT) reverse microemulsions. Interestingly, Raman spectroscopy and ultraviolet (UV)-visible spectroscopy revealed that the PPy nanotubes with smaller diameters had a more extended conjugation length as well as a higher oxidation level. The PPy nanotubes were deposited onto a microelectrode array and were exposed to chemical vapor and electromagnetic radiation: typically, NH(3) vapor and UV light were chosen. The electrical response of PPy nanotubes to two different kinds of analytes was strongly dependent on their diameters. Moreover, since the small dimensions of PPy nanotubes facilitated the interaction between nanotubes and analytes, the PPy nanotube sensors showed conspicuously enhanced responses compared with conventional PPy.

摘要

使用双（2-乙基己基）磺基琥珀酸钠（AOT）反相微乳液中的圆柱形胶束模板，可轻松制备出不同直径的聚吡咯（PPy）纳米管。有趣的是，拉曼光谱和紫外可见光谱表明，直径较小的PPy纳米管具有更长的共轭长度以及更高的氧化水平。将PPy纳米管沉积在微电极阵列上，并使其暴露于化学蒸气和电磁辐射中：通常选择NH₃蒸气和紫外光。PPy纳米管对两种不同分析物的电响应强烈依赖于它们的直径。此外，由于PPy纳米管的小尺寸促进了纳米管与分析物之间的相互作用，与传统PPy相比，PPy纳米管传感器表现出显著增强的响应。