A flexible transparent colorimetric wrist strap sensor

Ting Wang; Yunlong Guo; Pengbo Wan; Xiaoming Sun; Han Zhang; Zhongzhen Yu; Xiaodong Chen

doi:10.1039/c6nr08265c

A flexible transparent colorimetric wrist strap sensor

Nanoscale. 2017 Jan 5;9(2):869-874. doi: 10.1039/c6nr08265c.

Authors

Ting Wang¹, Yunlong Guo², Pengbo Wan², Xiaoming Sun², Han Zhang³, Zhongzhen Yu², Xiaodong Chen⁴

Affiliations

¹ 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.
² 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.
³ 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.
⁴ School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore.

PMID: 27995251
DOI: 10.1039/c6nr08265c

Abstract

A flexible, transparent, and portable wrist strap sensor device has been well developed from a hierarchical polydiacetylene/MoS₂ nanocomposite (PDA/MoS₂) film. MoS₂ with 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/MoS₂ film 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/MoS₂ films, indicating their great potential for smart wearable devices.