S-Space College of Engineering/Engineering Practice School (공과대학/대학원) Dept. of Chemical and Biological Engineering (화학생물공학부) Journal Papers (저널논문_화학생물공학부)
Sensing Behaviors of Polypyrrole Nanotubes Prepared in Reverse Microemulsions: Effects of Transducer Size and Transduction Mechanism
Cited 92 time in Web of Science Cited 100 time in Scopus
- Issue Date
- American Chemical Society
- J. Phys. Chem. B 2006, 110, 14074-14077
- 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,
NH3 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.
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