title: Cyclodextrin-Isolated Alkynylpyrenes as UV-Stable and Blue-Light-Emitting Molecules Even in Condensed States.
abstract: Encapsulation of highly emissive alkynylpyrenes with permethylated α-cyclodextrin (PM-α-CD) followed by capping reaction yielded alkynylpyrene-based [3]rotaxanes. The [3]rotaxane emitted only blue light of monomeric pyrene under various circumstances such as lipophilic, hydrophilic, and even condensed states and exhibited extremely high stability for UV irradiation. These properties would result because PM-α-CD, like bulletproof glass, protected the alkynylpyrene core from the attack of another excited alkynylpyrene and singlet oxygen generated by the energy transfer from the excited alkynylpyrene.
authors.affiliation: Graduate School of Pharmaceutical Sciences, University of Toyama , Toyama 930-0194, Japan.
authors.forename: Masahiko
authors.initials: M
authors.lastname: Inouye
authors.affiliation: Graduate School of Pharmaceutical Sciences, University of Toyama , Toyama 930-0194, Japan.
authors.forename: Atsushi
authors.initials: A
authors.lastname: Yoshizawa
authors.affiliation: Graduate School of Pharmaceutical Sciences, University of Toyama , Toyama 930-0194, Japan.
authors.forename: Mari
authors.initials: M
authors.lastname: Shibata
authors.affiliation: Graduate School of Pharmaceutical Sciences, University of Toyama , Toyama 930-0194, Japan.
authors.forename: Yuki
authors.initials: Y
authors.lastname: Yonenaga
authors.affiliation: Department of Applied Chemistry and Biochemistry, Kyushu Sangyo University , Fukuoka 813-8503, Japan.
authors.forename: Kazuhisa
authors.initials: K
authors.lastname: Fujimoto
authors.affiliation: Graduate School of Environment and Information Sciences, Yokohama National University , Yokohama 240-8501, Japan.
authors.forename: Takuma
authors.initials: T
authors.lastname: Sakata
authors.affiliation: Graduate School of Environment and Information Sciences, Yokohama National University , Yokohama 240-8501, Japan.
authors.forename: Shinya
authors.initials: S
authors.lastname: Matsumoto
authors.affiliation: Rigaku Corporation, Matsubaracho, Akishima, Tokyo 196-8666, Japan.
authors.forename: Motoo
authors.initials: M
authors.lastname: Shiro