Volume 54, Issue 22 pp. 6536-6539
Communication

Metallophthalocyanine-Based Conjugated Microporous Polymers as Highly Efficient Photosensitizers for Singlet Oxygen Generation

Dr. Xuesong Ding

Dr. Xuesong Ding

CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, National Center for Nanoscience and Technology, Beijing 100190 (China)

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Prof. Dr. Bao-Hang Han

Corresponding Author

Prof. Dr. Bao-Hang Han

CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, National Center for Nanoscience and Technology, Beijing 100190 (China)

CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, National Center for Nanoscience and Technology, Beijing 100190 (China)Search for more papers by this author
First published: 14 April 2015
Citations: 251

Financial support from the National Natural Science Foundation of China (grants no. 21304022 and 21374024) and the Ministry of Science and Technology of China (grant no. 2014CB932200) is acknowledged. We gratefully appreciate the insightful discussions and experimental support from Prof. Dr. Donglin Jiang (Institute for Molecular Science (Japan)).

Graphical Abstract

In the red: The extended π-conjugation systems of metallophthalocyanine-based conjugated microporous polymers (MPc-CMPs) results in an enhanced light-harvesting capability in the far-red region. The microporous structure of the MPc-CMPs and their excellent absorption capability for long-wavelength photons, result in them (especially ZnPc-CMP and CuPc-CMP) being promising photosensitizers with a high efficiency for 1O2 generation.

Abstract

Singlet oxygen (1O2) is of great interest because of its potential applications in photodynamic therapy, photooxidation of toxic molecules, and photochemical synthesis. Herein, we report novel metallophthalocyanine (MPc) based conjugated microporous polymers (MPc-CMPs) as photosensitizers for the generation of 1O2. The rigid microporous structure efficiently improves the exposure of the majority of the MPc units to oxygen. The MPc-CMPs also exhibit an enhanced light-harvesting capability in the far-red region through their extended π-conjugation systems. Their microporous structure and excellent absorption capability for long-wavelength photons result in the MPc-CMPs showing high efficiency for 1O2 generation upon irradiation with 700 nm light, as evident by using 1,3-diphenylisobenzofuran as an 1O2 trap. These results indicate that MPc-CMPs can be considered as promising photosensitizers for the generation of 1O2.

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