title: Halochromism of a polythiophene derivative induced by conformational changes and its sensing application of carbon dioxide.
abstract: We report the design and synthesis of a halochromic polythiophene derivative, whose conformation can be alternated between random coil and rodlike phase by adjusting the pH of the solution. Distinct solution color changes associated with the pH-induced conformational transitions can be used to construct a colorimetric probe for sensing carbon dioxide. This probe can be recovered by bubbling nitrogen gas into carbon dioxide-treated solutions for over 20 cycles.
authors.affiliation: Key Laboratory for Biomedical Effects of Nanomaterials & Nanosafety, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China.
authors.forename: Zhiyi
authors.initials: Z
authors.lastname: Yao
authors.forename: Xianping
authors.initials: X
authors.lastname: Hu
authors.forename: Binghuan
authors.initials: B
authors.lastname: Huang
authors.forename: Li
authors.initials: L
authors.lastname: Zhang
authors.forename: Lei
authors.initials: L
authors.lastname: Liu
authors.forename: Yuliang
authors.initials: Y
authors.lastname: Zhao
authors.forename: Hai-Chen
authors.initials: HC
authors.lastname: Wu
mesh_terms: D000042:Absorption; D002245:Carbon Dioxide / Q000032:analysis*; D008968:Molecular Conformation; D009584:Nitrogen; D011108:Polymers / Q000737:chemistry*; D013056:Spectrophotometry, Ultraviolet; D013696:Temperature; D013876:Thiophenes / Q000737:chemistry*
chemical_list: D011108:Polymers; D013876:Thiophenes; D002245:Carbon Dioxide; C066730:polythiophene; D009584:Nitrogen