Templated 2D Polymer Heterojunctions for Improved Photocatalytic Hydrogen Production

Catherine M. Aitchison, Soranyel Gonzalez-Carrero, Shilin Yao, Max Benkert, Zhiyuan Ding, Neil P. Young, Benjamin Willner, Floriana Moruzzi, Yuanbao Lin, Junfu Tian, Peter D. Nellist, James R. Durrant, Iain McCulloch

Research output: Contribution to journalArticlepeer-review

8 Scopus citations


2D polymers have emerged as one of the most promising classes of organic photocatalysts for solar fuel production due to their tunability, charge-transport properties, and robustness. They are however difficult to process and so there are limited studies into the formation of heterojunction materials incorporating these components. In this work, a novel templating approach is used to combine an imine-based donor polymer and an acceptor polymer formed through Knoevenagel condensation. Heterojunction formation is shown to be highly dependent on the topological match of the donor and acceptor polymers with the most active templated material found to be between three and nine times more active for photocatalysis than its constituent components. Transient absorption spectroscopy reveals that this improvement is due to faster charge separation and more efficient charge extraction in the templated heterojunction. The templated material shows a very high hydrogen evolution rate of >20 mmol h−1 m−2 with an ascorbic acid hole scavenger but also produces hydrogen in the presence of only water and a cobalt-based redox mediator. This suggests the improved charge-separation interface and reduced trapping accessed through this approach could be suitable for Z-scheme formation.

Original languageEnglish (US)
Article number2300037
JournalAdvanced Materials
Issue number20
StatePublished - May 16 2024
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • General Materials Science
  • Mechanics of Materials
  • Mechanical Engineering


  • 2D polymers
  • heterojunctions
  • organic semiconductors
  • photocatalysis
  • solar fuels


Dive into the research topics of 'Templated 2D Polymer Heterojunctions for Improved Photocatalytic Hydrogen Production'. Together they form a unique fingerprint.

Cite this