DataVXACS Applied Materials & InterfacesPaper
journal article·2023-08-23

Leaf-Inspired Host–Guest Complexation-Dictating Supramolecular Gas Sensors

Junsu Park, Yui Sasaki, Yoshiki Ishii, Shunsuke Murayama, Kohei Ohshiro, Kengo Nishiura, Ryohei Ikura, Hiroyasu Yamaguchi, Akira Harada, Go Matsuba, Hitoshi Washizu, Tsuyoshi Minami, Yoshinori Takashima

ACS Applied Materials & Interfaces· Volume 15· Issue 33
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Source abstract

Abstract

We report unique conductive leaf-inspired (in particular, stomata-inspired) supramolecular gas sensors in which acetylated cyclodextrin derivatives rule the electric output. The gas sensors consist of polymers bearing acetylated cyclodextrin, adamantane, and carbon black. Host-guest complexes between acetylated cyclodextrin and adamantane corresponding to the closed stomata realize a flexible polymeric matrix. Effective recombination of the cross-links contributes to the robustness. As gas sensors, the supramolecular materials detect ammonia as well as various other gases at 1 ppm in 10 min. The free acetylated cyclodextrin corresponding to open stomata recognized the guest gases to alter the electric resistivity. Interestingly, the conductive device failed to detect ammonia gases at all without acetylated cyclodextrin. The molecular recognition was studied by molecular dynamics simulations. The gas molecules existed stably in the cavity of free acetylated cyclodextrin. These findings show the potential for developing wearable gas sensors.
Source: openalex_inverted_index · Quality: baseline

Research context

Polymers

OpenAlex topics: Luminescence and Fluorescent Materials · Molecular Sensors and Ion Detection · Advanced Chemical Sensor Technologies

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Department of Macromolecular Science, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka 560-0043, Japan

Forefront Research Center, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka 560-0043, Japan

Institute of Industrial Science, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo 153-8505, Japan

Graduate School of Information Science, University of Hyogo, 7-1-28 minatojima-minamimachi, Chuo, Kobe, Hyogo 650-0047, Japan

Graduate School of Organic Materials Engineering, Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata 992-8510, Japan

Innovative Catalysis Science Division, Institute for Open and Transdisciplinary Research Initiatives (OTRI), Osaka University, 1-1 Yamadaoka, Suita, Osaka 565-0871, Japan

SANKEN (The Institute of Scientific and Industrial Research), Osaka University, 8-1 Mihogaoka, Ibaraki, Osaka 567-0047, Japan

Institute for Advanced Co-Creation Studies, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka 560-0043, Japan

Funding

Ministry of Education, Culture, Sports, Science and Technology · Asahi Glass Foundation · Kao Foundation for Arts and Sciences · Iketani Science and Technology Foundation

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