High Charge Carrier Mobility in Porphyrin Nanoribbons

He Zhu; Guanzhao Wen; Wenhao Zheng; Nicholas H Rees; Wojciech Stawski; Hai I Wang; Mischa Bonn; Harry Laurence Anderson

doi:10.1002/anie.202417429

High Charge Carrier Mobility in Porphyrin Nanoribbons

Angew Chem Int Ed Engl. 2024 Nov 12:e202417429. doi: 10.1002/anie.202417429. Online ahead of print.

Authors

He Zhu¹, Guanzhao Wen², Wenhao Zheng³, Nicholas H Rees¹, Wojciech Stawski¹, Hai I Wang³, Mischa Bonn³, Harry Laurence Anderson⁴

Affiliations

¹ University of Oxford, Chemistry, UNITED KINGDOM OF GREAT BRITAIN AND NORTHERN IRELAND.
² Max Planck Institute for Polymer Research: Max-Planck-Institut fur Polymerforschung, Department of Molecular Spectroscopy, GERMANY.
³ Max-Planck-Institut fur Polymerforschung, Department of Molecular Spectroscopy, GERMANY.
⁴ University of Oxford, Department of Chemistry, 12 Mansfield Road, Chemistry Research Laboratory, OX1 3TA, Oxford, UNITED KINGDOM OF GREAT BRITAIN AND NORTHERN IRELAND.

PMID: 39532665
DOI: 10.1002/anie.202417429

Abstract

Polydisperse edge-fused nickel(II) porphyrin nanoribbons have been synthesized by Yamamoto coupling followed by gold(III)-mediated fusion, with average degrees of polymerization of up to 37 repeat units (length 31 nm). Time-resolved optical-pump terahertz spectroscopy measurements indicate that photo-generated charge carriers have dc mobilities of up to 205 cm2 V-1 s-1 in these nanoribbons, exceeding the values previously reported for most other types of nanoribbon or π-conjugated polymer.

Keywords: high charge carrier mobility; polymers; porphyrins; small bandgap; time-resolved spectroscopy.