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Cheng et al. Chem Synth 2023;3:13 Chemical Synthesis
DOI: 10.20517/cs.2022.43

Research Article Open Access
Dedicated to Professor Alain Krief on the occasion of his 80th Birthday

Luminescent alkynylplatinum(II) terpyridine-

containing conjugated polymers: synthesis,
characterization and photophysical studies

Heung-Kiu Cheng, Vivian Wing-Wah Yam *
Institute of Molecular Functional Materials and Department of Chemistry, The University of Hong Kong, Hong Kong 999077,
China.
* Correspondence to: Prof. Vivian Wing-Wah Yam, Institute of Molecular Functional Materials and Department of Chemistry,
The University of Hong Kong, Pokfulam Road, Hong Kong 999077, China. E-mail: wwyam@hku.hk
How to cite this article: Cheng HK, Yam VWW. Luminescent alkynylplatinum(II) terpyridine-containing conjugated polymers:
synthesis, characterization and photophysical studies. Chem Synth 2023;3:13. https://dx.doi.org/10.20517/cs.2022.43
Received: 29 Dec 2022 First Decision: 2 Feb 2023 Revised: 17 Feb 2023 Accepted: 23 Feb 2023 Published: 9 Mar 2023

Academic Editor: Bao-Lian Su Copy Editor: Ke-Cui Yang Production Editor: Ke-Cui Yang

Abstract
A series of alkynylplatinum(II) terpyridine complexes and alkynylplatinum(II) terpyridine-containing conjugated
polymers with different polymer backbones has been synthesized, and their spectroscopic properties and Förster
resonance energy transfer (FRET) processes has been investigated. The platinum(II)-containing polymers exhibit
dual emissive features with emission maxima at ca. 416-465 nm and ca. 671-673 nm, which are assigned to be
1
originated from singlet intraligand ( IL) excited states from the polymer backbone and triplet metal-metal-to-ligand
3
charge transfer ( MMLCT) excited states from the platinum(II) pendants, respectively. The Förster radii (R ) of the
0
platinum(II)-containing conjugated polymers have been determined, and their distinctive thermo-responsive
luminescence changes have also been observed. The present work has demonstrated the utilization of “click”
reaction for the preparation of platinum(II)-containing conjugated polymers, which show unique photophysical and
spectroscopic properties. Through the judicious design, this type of platinum(II)-containing polymer is found to be
sensitive to temperature, resulting in ratiometric emission changes. This study has provided valuable insights into
the preparation of metal-containing polymeric systems for different applications.
Keywords: Platinum(II) complexes, conjugated polymers, FRET

© The Author(s) 2023. Open Access This article is licensed under a Creative Commons Attribution 4.0
International License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, sharing,
adaptation, distribution and reproduction in any medium or format, for any purpose, even commercially, as
long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and
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