Environmental Responses of Polythiophene Hydrogels
2000; American Chemical Society; Volume: 33; Issue: 4 Linguagem: Inglês
10.1021/ma990923i
ISSN1520-5835
AutoresLi Chen, Byoung‐Suhk Kim, Masahiko Nishino, Jian Ping Gong, Yoshihito Osada,
Tópico(s)Advanced Sensor and Energy Harvesting Materials
ResumoA chemically cross-linked and water-swollen poly(3-thiopheneacetic acid) (P3TAA) gel was synthesized, and its swelling and spectral changes associated with its ionization were studied. The gel undergoes an abrupt red shift in the electronic spectra at a certain pH, suggesting that a conformational transition due to ionization occurred despite the chemical cross-linkage. By changing the solvent composition, during cross-linking, gels with an enhanced π conjugated structure were prepared. By doping of P3TAA gel with a HClO4 solution, a satisfactorily high electrical conductivity was obtained.
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