About the Authors

Masanari Okuno

Affiliation Department of Chemistry, School of Science, The University of Tokyo, Bunkyo-ku, Tokyo, Japan

Hideaki Kano

Affiliation Department of Chemistry, School of Science, The University of Tokyo, Bunkyo-ku, Tokyo, Japan

Kenkichi Fujii

Affiliation Safety Science Research Laboratories, Kao Corporation, Haga-Gun, Tochigi, Japan

Kotatsu Bito

Affiliation Analytical Science Research Laboratories, Kao Corporation, Haga-Gun, Tochigi, Japan

Satoru Naito

Affiliation Analytical Science Research Laboratories, Kao Corporation, Haga-Gun, Tochigi, Japan

Philippe Leproux

Affiliation Institut de Recherche XLIM, UMR CNRS, Limoges, France

Vincent Couderc

Affiliation Institut de Recherche XLIM, UMR CNRS, Limoges, France

Hiro-o Hamaguchi

hhama@nctu.edu.tw

Affiliations Department of Chemistry, School of Science, The University of Tokyo, Bunkyo-ku, Tokyo, Japan, Institute of Molecular Science and Department of Applied Chemistry, National Chiao Tung University, Hsinchu, Taiwan

Competing Interests

J. Ukon, UKON CRAFT SCIENCE, Ltd. assisted with a fruitful collaboration between Japanese and French labs. There are no patents, products in development or marketed products to declare. This does not alter the authors' adherence to all the PLOS ONE policies on sharing data and materials.

Author Contributions

Conceived and designed the experiments: KF SN HH. Performed the experiments: MO KF KB. Analyzed the data: MO KF KB. Contributed reagents/materials/analysis tools: PL VC. Wrote the paper: MO HK KF KB HH.