Tunable Circularly Polarized Luminescence of Helical Poly(phenylacetylene)s <italic style="font-style: italic">via</italic> Side-chain-to-Backbone Förster Resonance Energy Transfer

Yi-Han Huang; Jian Guan; Jia-Qi Yu; Xin-Hua Wan; Jie Zhang

doi:10.1007/s10118-026-3795-2

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Tunable Circularly Polarized Luminescence of Helical Poly(phenylacetylene)s via Side-chain-to-Backbone Förster Resonance Energy Transfer

Special Topic: Chirality in Polymers | Updated：2026-08-31

- Tunable Circularly Polarized Luminescence of Helical Poly(phenylacetylene)s via Side-chain-to-Backbone Förster Resonance Energy Transfer
- Tunable Circularly Polarized Luminescence of Helical Poly(phenylacetylene)s via Side-chain-to-Backbone Förster Resonance Energy Transfer
- Chinese Journal of Polymer Science 2026年44卷第9期页码：2909-2917
- Affiliations：
  
  Beijing National Laboratory for Molecular Science, Key Laboratory of Polymer Chemistry and Physics of the Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
- Author bio：
  
  jz10@pku.edu.cn
- Funds：
  
  This work was financially supported by the National Natural Science Foundation of China (Nos. 22375009, 92356305 and 52073001). PL and CPL measurements were performed at the Analytical Instrumentation Center of Peking University/National Center for Nanoscience and Technology.;Xin-Hua Wan is an executive associate editor for Chinese Journal of Polymer Science and was not involved in the editorial review or the decision to publish this article. The authors declare no conflict of interest.Electronic supplementary information (ESI) is available free of charge in the online version of this article at http://doi.org/10.1007/s10118-026-3795-2.The data that support the findings of this study are available from the corresponding author upon reasonable request.
- DOI：10.1007/s10118-026-3795-2
  中图分类号： [M
- 收稿：2026-05-07，
  
  录用：2026-06-24，
  
  网络首发：2026-08-03，
  
  纸质出版：2026-09-05
- Accepted：
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Huang, Y. H.; Guan, J.; Yu, J. Q.; Wan, X. H.; Zhang, J. Tunable circularly polarized luminescence of helical poly(phenylacetylene)s via side-chain-to-backbone förster resonance energy transfer. Chinese J. Polym. Sci. 2026, 44, 2909–2917

Yi-Han Huang, Jian Guan, Jia-Qi Yu, et al. Tunable Circularly Polarized Luminescence of Helical Poly(phenylacetylene)s via Side-chain-to-Backbone Förster Resonance Energy Transfer[J]. Chinese Journal of Polymer Science, 2026, 44(9): 2909-2917. DOI: 10.1007/s10118-026-3795-2.
Huang, Y. H.; Guan, J.; Yu, J. Q.; Wan, X. H.; Zhang, J. Tunable circularly polarized luminescence of helical poly(phenylacetylene)s via side-chain-to-backbone förster resonance energy transfer. Chinese J. Polym. Sci. 2026, 44, 2909–2917 DOI： 10.1007/s10118-026-3795-2.

Yi-Han Huang, Jian Guan, Jia-Qi Yu, et al. Tunable Circularly Polarized Luminescence of Helical Poly(phenylacetylene)s via Side-chain-to-Backbone Förster Resonance Energy Transfer[J]. Chinese Journal of Polymer Science, 2026, 44(9): 2909-2917. DOI: 10.1007/s10118-026-3795-2. DOI：

摘要

Donor-functionalized helical poly(phenylacetylene)s achieved tunable circularly polarized luminescence through side-chain-to-backbone Förster resonance energy transfer (FRET). Pyrene pendants undergo chiral ordering and transfer excitation energy to the emissive helical backbone

producing an amplified film CPL with a |

lum

| value of 7×10

−2

whereas triphenylamine pendants enable helical-conformation-responsive blue-green switching.

Abstract

Intrinsically emissive helical poly(phenylacetylene)s (PPAs) are attractive circularly polarized luminescence (CPL) materials

yet their color tunability and light-harvesting capability remain limited because the emission mainly originates from the backbone excited states. Herein

we construct side-chain/backbone bichromophoric PPA systems to investigate Förster resonance energy transfer (FRET) and its effect on CPL performance. Using a pentafluorophenyl ester-functionalized

PPA-PFP

as a common precursor

planar aromatic donors

pyrene (Py) and naphthalene (Nap)

and a non-coplanar donor

triphenylamine (TPA)

were systematically introduced through activated-ester amidation.

Py-PPA

and

Nap-PPA

both underwent efficient donor-to-backbone energy transfer to the emissive

cis-cisoid

helical backbone

while

Py-PPA

showed a higher FRET efficiency and a much more pronounced so

lid-state CPL enhancement

with a |

lum

| value of 7×10

−2

in the film. In contrast

TPA-PPA

exhibited conformation-coupled FRET attenuation and emission color switching because the bulky twisted donor destabilized the

cis-cisoid

backbone. Further spectroscopic and diffraction studies revealed that the superior CPL performance of

Py-PPA

originated from the synergistic combination of stronger pendant chiral ordering and more efficient side-chain-to-backbone energy transfer during solution aging and film formation. These results show that donor-pendant modification is an effective way to regulate FRET and CPL in intrinsically emissive PPA systems.

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2026-9 Contents

Tunable Circularly Polarized Luminescence of Helical Poly(phenylacetylene)s via Side-chain-to-Backbone Förster Resonance Energy Transfer

Tunable Circularly Polarized Luminescence of Helical Poly(phenylacetylene)s via Side-chain-to-Backbone Förster Resonance Energy Transfer

DOI：10.1007/s10118-026-3795-2

摘要

Abstract

关键词

Keywords

references