Highly fluorescent slipped-cofacial phthalocyanine dimer as a shallow inclusion complex with α-cyclodextrin

The Journal of Physical Chemistry. a
Mitsuhiko MorisueYasuhisa Kuroda

Abstract

Supramolecular control of the π-stacked configuration of aqueous phthalocyanine (Zn[Pc(SO(3))(4)]) was achieved, allowing organization of a J-type slipped-cofacial dimer with per-O-methylated α-cyclodextrin (TMe-α-CDx) by the aid of host-guest interactions. Pristine Zn[Pc(SO(3))(4)] forms nonfluorescent face-to-face aggregates in water. The π-stacked configuration was controlled in the slipped-cofacial dimer, which was formed as a shallow inclusion complex with TMe-α-CDx, giving remarkably enhanced fluorescence with a very small Stokes shift. Organization of the J-type slipped-cofacial dimer as a 2:2 Zn[Pc(SO(3))(4)]-TMe-α-CDx complex was achieved through π-stacking of the unencapsulated segment of Zn[Pc(SO(3))(4)] shallowly encapsulated by a small TMe-α-CDx cavity.

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Citations

Nov 26, 2015·Chemical Communications : Chem Comm·Mitsuhiko MorisueYoshiki Chujo
Apr 26, 2017·ACS Combinatorial Science·Hoang D LuRobert K Prud'homme
Jun 11, 2020·Chemical Communications : Chem Comm·Justin DubbertJens Voskuhl
Oct 28, 2018·International Journal of Molecular Sciences·Zonglin LiuYing Xu
Jun 14, 2014·Journal of Materials Chemistry. B, Materials for Biology and Medicine·Aurore FraixSalvatore Sortino
Oct 11, 2013·The Journal of Physical Chemistry. a·Susumu YanagisawaShozo Yanagida

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