An All‐In‐One Integrating Strategy for Designing Platinum(II)‐Based Supramolecular Polymers for Photocatalytic Hydrogen Evolution

Author:

Qin Yanyan12,She Pengfei12,Wang Yidi12,Wong Wai‐Yeung12ORCID

Affiliation:

1. Department of Applied Biology and Chemical Technology and Research Institute for Smart Energy The Hong Kong Polytechnic University Hung Hom Hong Kong P. R. China

2. The Hong Kong Polytechnic University Shenzhen Research Institute Shenzhen 518057 P. R. China

Abstract

AbstractOrganic polymer photocatalysts have achieved significant progress in photocatalytic hydrogen evolution, while developing the integrated organic polymers possessing the functions of photosensitizer, electron transfer mediator, and catalyst simultaneously is urgently needed and presents a great challenge. Considering that chalcogenoviologens are able to act as photosensitizers and electron‐transfer mediators, a series of chalcogenoviologen‐containing platinum(II)‐based supramolecular polymers is designed, which exhibited strong visible light‐absorbing ability and suitable bandgap for highly efficient photocatalytic hydrogen evolution without the use of a cocatalyst. The hydrogen evolution rate (HER) increases steadily with the decrease in an optical gap of the polymer. Among these “all‐in‐one” polymers, Se‐containing 2D porous polymer exhibited the best photocatalytic performance with a HER of 3.09 mmol g−1 h−1 under visible light (>420 nm) irradiation. Experimental and theoretical calculations reveal that the distinct intramolecular charge transfer characteristics and heteroatom N in terpyridine unit promote charge separation and transfer within the molecules. This work could provide new insights into the design of metallo‐supramolecular polymers with finely tuned components for photocatalytic hydrogen evolution from water.

Funder

National Natural Science Foundation of China

Publisher

Wiley

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