多くの有機高分子に現れる蛍光の電子遷移過程

カテゴリ: 論文誌(論文単位)

グループ名: 【A】基礎・材料・共通部門

発行日: 2016/04/01

タイトル(英語): Electronic Transition Process of Fluorescence Appearing in Various Organic Polymers

著者名: 西川　聖也（早稲田大学大学院 先進理工学研究科 電気・情報生命専攻），殿井　將史（早稲田大学大学院 先進理工学研究科 電気・情報生命専攻），吉川　武司（早稲田大学大学院 先進理工学研究科 化学・生命化学専攻），平井　直志（早稲田大学材料技術研究所），中井　浩巳（早稲田大学大学院 先進理工学研究科 化学・生命化学専攻），大木　義路（早稲田大学大学院 先進理工学研究科 電気・情報生命専攻／早稲田大学材料技術研究所）

著者名(英語): Seiya Nishikawa (Department of Electrical Engineering and Bioscience, Waseda University), Masashi Tonoi (Department of Electrical Engineering and Bioscience, Waseda University), Takeshi Yoshikawa (Department of Chemistry and Biochemistry, Waseda University), Naoshi Hirai (Research Institute for Materials Science and Technology, Waseda University), Hiromi Nakai (Department of Chemistry and Biochemistry, Waseda University), Yoshimichi Ohki (Department of Electrical Engineering and Bioscience, Waseda University/Research Institute for Materials Science and Technology, Waseda University)

キーワード: ポリオレフィン，生分解性高分子，フォトルミネセンス，量子化学計算，計算化学　　polyolefin，biodegradable polymer，photoluminescence，quantum chemical calculation，computational chemistry

要約(英語): Low density polyethylene (LDPE) and polypropylene (PP) exhibit a photoluminescence (PL) band, which emits photons with an energy of around 4.3 eV when excited by photons with energies around 6.4 eV. The origin of this PL band has been assigned to α, β-unsaturated carbonyl. In this paper, the appearance of PL was examined for four kinds of polyolefin and four kinds of biodegradable polymers. As a result, it has become clear that all the polymers show a PL band with a PL excitation spectrum and a PL spectrum similar to those of the above-mentioned PL band in LDPE and PP. The decay profiles observed for these PL bands indicate that they are fluorescence. Furthermore, the intensity of the PL becomes weak for all the four polyolefin samples and the polylatic acid sample if ultraviolet photons were irradiated to the sample. Quantum chemical calculations carried out by assuming a model of α, β-unsaturated carbonyl have revealed that the PL originates in the π* to π transition of electrons in the carbon-carbon double bond.

本誌: 電気学会論文誌A（基礎・材料・共通部門誌） Vol.136 No.4 （2016） 特集：平成27年基礎・材料・共通部門大会

本誌掲載ページ: 205-211 p

原稿種別: 論文／日本語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejfms/136/4/136_205/_article/-char/ja/