title: Visual indication of enviromental humidity by using poly(ionic liquid) photonic crystals.
abstract: The combination of poly (ionic liquid) and photonic structure affords a new class of self-reporting humidity sensory materials with excellent reversibility, which are able to rapidly, sensitively and visually indicate environmental humidity with colour change from blue to green, orange, and red, covering the whole visible range.
authors.affiliation: Key Lab of Organic Optoelectronics and Molecular Engineering, Department of Chemistry, Tsinghua University, 100084 Beijing, China.
authors.forename: Jing
authors.initials: J
authors.lastname: Huang
authors.forename: Cheng-an
authors.initials: CA
authors.lastname: Tao
authors.forename: Qi
authors.initials: Q
authors.lastname: An
authors.forename: Changxu
authors.initials: C
authors.lastname: Lin
authors.forename: Xuesong
authors.initials: X
authors.lastname: Li
authors.forename: Dan
authors.initials: D
authors.lastname: Xu
authors.forename: Yiguang
authors.initials: Y
authors.lastname: Wu
authors.forename: Xiaogang
authors.initials: X
authors.lastname: Li
authors.forename: Dezhong
authors.initials: D
authors.lastname: Shen
authors.forename: Guangtao
authors.initials: G
authors.lastname: Li