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
- Chinese Journal of Polymer Science Vol. 44, Issue 9, Pages: 2909-2917(2026)
- 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：
- DOI：10.1007/s10118-026-3795-2
  CLC： [M
- Received：07 May 2026，
  
  Accepted：24 June 2026，
  
  Online First：03 August 2026，
  
  Published：05 September 2026
- 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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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