title: Molecularly Imprinted Filtering Adsorbents for Odor Sensing.
abstract: Versatile odor sensors that can discriminate among huge numbers of environmental odorants are desired in many fields, including robotics, environmental monitoring, and food production. However, odor sensors comparable to an animal's nose have not yet been developed. An animal's olfactory system recognizes odor clusters with specific molecular properties and uses this combinatorial information in odor discrimination. This suggests that measurement and clustering of odor molecular properties (e.g., polarity, size) using an artificial sensor is a promising approach to odor sensing. Here, adsorbents composed of composite materials with molecular recognition properties were developed for odor sensing. The selectivity of the sensor depends on the adsorbent materials, so specific polymeric materials with particular solubility parameters were chosen to adsorb odorants with various properties. The adsorption properties of the adsorbents could be modified by mixing adsorbent materials. Moreover, a novel molecularly imprinted filtering adsorbent (MIFA), composed of an adsorbent substrate covered with a molecularly imprinted polymer (MIP) layer, was developed to improve the odor molecular recognition ability. The combination of the adsorbent and MIP layer provided a higher specificity toward target molecules. The MIFA thus provides a useful technique for the design and control of adsorbents with adsorption properties specific to particular odor molecules.
authors.affiliation: Graduate School of Systems Life Sciences, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan. s.shinohara.877@s.kyushu-u.ac.jp.
authors.forename: Sho
authors.initials: S
authors.lastname: Shinohara
authors.affiliation: Graduate School of Information Science and Electrical Engineering, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan. youchiyomaru@hotmail.co.jp.
authors.forename: You
authors.initials: Y
authors.lastname: Chiyomaru
authors.affiliation: Graduate School of Information Science and Electrical Engineering, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan. sassa@ed.kyushu-u.ac.jp.
authors.forename: Fumihiro
authors.initials: F
authors.lastname: Sassa
authors.affiliation: Graduate School of Information Science and Electrical Engineering, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan. liu_d@use-ebisu.co.jp.|Research Laboratory, U.S.E Co. Ltd., 1-10-4 Hiroo, Shibuya-ku, Tokyo 150-0012, Japan. liu_d@use-ebisu.co.jp.
authors.forename: Chuanjun
authors.initials: C
authors.lastname: Liu
authors.affiliation: Graduate School of Information Science and Electrical Engineering, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan. hayashi@ed.kyushu-u.ac.jp.
authors.forename: Kenshi
authors.initials: K
authors.lastname: Hayashi
mesh_terms: D000327:Adsorption; D054802:Molecular Imprinting / Q000379:methods*; D009812:Odorants / Q000032:analysis*; D011108:Polymers / Q000737:chemistry
chemical_list: D011108:Polymers
keywords: adsorbents; molecularly imprinted filtering adsorbent; odor sensor