title: Observable temperature-dependent compaction-decompaction of cationic polythiophene in the presence of iodide.
abstract: Investigation on compaction and decompaction of polymers is very important since it is a fundamental problem in polymer physics. With the aids of atomic force microscope (AFM) and dynamic light scattering (DLS) measurements in this contribution, the temperature-dependent compaction/decompaction transition process of water-soluble cationic polythiophene (PT) was investigated in the presence of KI. The above process is characterized by the red-to-yellow color change and fluorescence recovery and is reversible during the heating-cooling cycles in the range from 25 to 55 °C, indicating that the compaction and decompaction of polymer can be employed as a temperature indicator.
authors.affiliation: Education Ministry Key Laboratory on Luminescence and Real-Time Analysis, College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China.
authors.forename: Jian
authors.initials: J
authors.lastname: Wang
authors.forename: Qing
authors.initials: Q
authors.lastname: Zhang
authors.forename: Ke Jun
authors.initials: KJ
authors.lastname: Tan
authors.forename: Yun Fei
authors.initials: YF
authors.lastname: Long
authors.forename: Jian
authors.initials: J
authors.lastname: Ling
authors.forename: Cheng Zhi
authors.initials: CZ
authors.lastname: Huang
mesh_terms: D002412:Cations / Q000737:chemistry; D011108:Polymers / Q000737:chemistry*; D011193:Potassium Iodide / Q000737:chemistry*; D012995:Solubility; D013050:Spectrometry, Fluorescence; D013696:Temperature; D013876:Thiophenes / Q000737:chemistry*
chemical_list: D002412:Cations; D011108:Polymers; D013876:Thiophenes; D011193:Potassium Iodide; C066730:polythiophene