Highly Fluorescent Slipped-Cofacial Phthalocyanine Dimer as a Shallow Inclusion Complex with 伪-Cyclodextrin

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• 作者：Mitsuhiko Morisue ; Shun Ueda ; Masaki Kurasawa ; Masanobu Naito ; Yasuhisa Kuroda
• 刊名：The Journal of Physical Chemistry A
• 出版年：2012
• 出版时间：May 31, 2012
• 年：2012
• 卷：116
• 期：21
• 页码：5139-5144
• 全文大小：416K
• 年卷期：v.116,no.21(May 31, 2012)
• ISSN：1520-5215

文摘

Supramolecular control of the 蟺-stacked configuration of aqueous phthalocyanine (Zn[Pc(SO₃)₄]) was achieved, allowing organization of a J-type slipped-cofacial dimer with per-O-methylated 伪-cyclodextrin (TMe-伪-CDx) by the aid of host鈥揼uest interactions. Pristine Zn[Pc(SO₃)₄] forms nonfluorescent face-to-face aggregates in water. The 蟺-stacked configuration was controlled in the slipped-cofacial dimer, which was formed as a shallow inclusion complex with TMe-伪-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(SO₃)₄]鈥揟Me-伪-CDx complex was achieved through 蟺-stacking of the unencapsulated segment of Zn[Pc(SO₃)₄] shallowly encapsulated by a small TMe-伪-CDx cavity.