論文

査読有り
2015年6月

Creation of Superheterojunction Polymers via Direct Polycondensation: Segregated and Bicontinuous Donor-Acceptor pi-Columnar Arrays in Covalent Organic Frameworks for Long-Lived Charge Separation

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
  • Shangbin Jin
  • ,
  • Mustafa Supur
  • ,
  • Matthew Addicoat
  • ,
  • Ko Furukawa
  • ,
  • Long Chen
  • ,
  • Toshikazu Nakamura
  • ,
  • Shunichi Fukuzumi
  • ,
  • Stephan Irle
  • ,
  • Donglin Jiang

137
24
開始ページ
7817
終了ページ
7827
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1021/jacs.5b03553
出版者・発行元
AMER CHEMICAL SOC

By developing metallophthalocyanines and diimides as electron-donating and -accepting building blocks, herein, we report the construction of new electron donor-acceptor covalent organic frameworks (COFs) with periodically ordered electron donor and acceptor pi-columnar arrays via direct polycondensation reactions. X-ray diffraction measurements in conjunction with structural simulations resolved that the resulting frameworks consist of metallophthalocyanine and diimide columns, which are ordered in a segregated yet bicontinuous manner to form built-in periodic pi-arrays. In the frameworks, each metallophthalocyanine donor and diimide acceptor units are exactly linked and interfaced, leading to the generation of superheterojunctionsa new type of heterojunction machinery, for photoinduced electron transfer and charge separation. We show that this polycondensation method is widely applicable to various metallophthalocyanines and diimides as demonstrated by the combination of copper, nickel, and zinc phthalocyanine donors with pyrommellitic diimide, naphthalene diimide, and perylene diimide acceptors. By using time-resolved transient absorption spectroscopy and electron spin resonance, we demonstrated that the COFs enable long-lived charge separation, whereas the metal species, the class of acceptors, and the local geometry between donor and acceptor units play roles in determining the photochemical dynamics. The results provide insights into photoelectric COFs and demonstrate their enormous potential for charge separation and photoenergy conversions.

リンク情報
DOI
https://doi.org/10.1021/jacs.5b03553
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000357062000050&DestApp=WOS_CPL
ID情報
  • DOI : 10.1021/jacs.5b03553
  • ISSN : 0002-7863
  • Web of Science ID : WOS:000357062000050

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