title: A flexible transparent colorimetric wrist strap sensor.
abstract: A flexible, transparent, and portable wrist strap sensor device has been well developed from a hierarchical polydiacetylene/MoS2nanocomposite (PDA/MoS2) film. MoS2with a nanoflake structure and chelation ability acts as a supporter for PDA films to enhance the porosity as well as the transparency of films, which increases the sensitivity, selectivity, and application potential of a PDA sensor. The PDA/MoS2film sensor shows a linear detection range for N,N-dimethylformamide (DMF) vapor from 0.01% to 4% with a visible blue to red color change detected by the naked eye, which is more sensitive than other organic vapors. Exploiting the high transparency, vivid color change, remarkable flexibility and reliability, a wearable wrist strap sensor device with visible DMF sensing ability is fabricated based on PDA/MoS2films, indicating their great potential for smart wearable devices.
authors.affiliation: State Key Laboratory of Organic-Inorganic Composites, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, P.R. China. pbwan@mail.buct.edu.cn and SZU-NUS Collaborative Innovation Center for Optoelectronic Science & Technology, Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, Shenzhen University, Shenzhen 518060, China. hzhang@szu.edu.cn and School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore.
authors.forename: Ting
authors.initials: T
authors.lastname: Wang
authors.affiliation: State Key Laboratory of Organic-Inorganic Composites, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, P.R. China. pbwan@mail.buct.edu.cn.
authors.forename: Yunlong
authors.initials: Y
authors.lastname: Guo
authors.affiliation: State Key Laboratory of Organic-Inorganic Composites, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, P.R. China. pbwan@mail.buct.edu.cn.
authors.forename: Pengbo
authors.identifier: http://orcid.org/0000-0001-8178-4262
authors.initials: P
authors.lastname: Wan
authors.affiliation: State Key Laboratory of Organic-Inorganic Composites, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, P.R. China. pbwan@mail.buct.edu.cn.
authors.forename: Xiaoming
authors.initials: X
authors.lastname: Sun
authors.affiliation: SZU-NUS Collaborative Innovation Center for Optoelectronic Science & Technology, Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, Shenzhen University, Shenzhen 518060, China. hzhang@szu.edu.cn.
authors.forename: Han
authors.initials: H
authors.lastname: Zhang
authors.affiliation: State Key Laboratory of Organic-Inorganic Composites, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, P.R. China. pbwan@mail.buct.edu.cn.
authors.forename: Zhongzhen
authors.initials: Z
authors.lastname: Yu
authors.affiliation: School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore.
authors.forename: Xiaodong
authors.initials: X
authors.lastname: Chen