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Hydrophobic and Hydrophilic Conjugated Polymer Dots as Binary Photocatalysts for Enhanced Visible-Light-Driven Hydrogen Evolution through Förster Resonance Energy Transfer

Elsayed, Mohamed Hammad ; Abdellah, Mohamed LU ; Hung, Yi Hao ; Jayakumar, Jayachandran ; Ting, Li Yu ; Elewa, Ahmed M. ; Chang, Chih Li ; Lin, Wei Cheng ; Wang, Kuo Lung and Abdel-Hafiez, Mahmoud , et al. (2021) In ACS Applied Materials and Interfaces 13(47). p.56554-56565
Abstract

Organic semiconducting polymers exhibited promising photocatalytic behavior for hydrogen (H2) evolution, especially when prepared in the form of polymer dots (Pdots). However, the Pdot structures were formed using common nonconjugated amphiphilic polymers, which have a negative effect on charge transfer between photocatalysts and reactants and are unable to participate in the photocatalytic reaction. This study presents a new strategy for constructing binary Pdot photocatalysts by replacing the nonconjugated amphiphilic polymer typically employed in the preparation of polymer nanoparticles (Pdots) with a low-molecular-weight conjugated polyelectrolyte. The as-prepared polyelectrolyte/hydrophobic polymer-based binary Pdots truly enhance... (More)

Organic semiconducting polymers exhibited promising photocatalytic behavior for hydrogen (H2) evolution, especially when prepared in the form of polymer dots (Pdots). However, the Pdot structures were formed using common nonconjugated amphiphilic polymers, which have a negative effect on charge transfer between photocatalysts and reactants and are unable to participate in the photocatalytic reaction. This study presents a new strategy for constructing binary Pdot photocatalysts by replacing the nonconjugated amphiphilic polymer typically employed in the preparation of polymer nanoparticles (Pdots) with a low-molecular-weight conjugated polyelectrolyte. The as-prepared polyelectrolyte/hydrophobic polymer-based binary Pdots truly enhance the electron transfer between the Pt cocatalyst and the polymer photocatalyst with good water dispersibility. Moreover, unlike the nonconjugated amphiphilic polymer, the photophysics and mechanism of this photocatalytic system through time-correlated single-photon counting (TCSPC) and transient absorption (TA) measurements confirmed the Förster resonance energy transfer (FRET) between the polyelectrolyte as a donor and the hydrophobic polymer as an acceptor. As a result, the designated binary Pdot photocatalysts significantly enhanced the hydrogen evolution rate (HER) of 43 »900 μmol g-1 h-1 (63.5 μmol h-1, at 420 nm) for PTTPA/PFTBTA Pdots under visible-light irradiation.

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organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
binary Pdots, energy transfer, fast electron transfer, hydrogen evolution, hydrophilic and hydrophobic conjugated polymer photocatalysts
in
ACS Applied Materials and Interfaces
volume
13
issue
47
pages
12 pages
publisher
The American Chemical Society (ACS)
external identifiers
  • scopus:85119964538
  • pmid:34783531
ISSN
1944-8244
DOI
10.1021/acsami.1c15812
language
English
LU publication?
yes
additional info
Publisher Copyright: © 2021 American Chemical Society.
id
e199ea4d-0553-4c64-ab84-1b200b7a1316
date added to LUP
2022-01-24 15:18:51
date last changed
2024-06-16 00:16:29
@article{e199ea4d-0553-4c64-ab84-1b200b7a1316,
  abstract     = {{<p>Organic semiconducting polymers exhibited promising photocatalytic behavior for hydrogen (H2) evolution, especially when prepared in the form of polymer dots (Pdots). However, the Pdot structures were formed using common nonconjugated amphiphilic polymers, which have a negative effect on charge transfer between photocatalysts and reactants and are unable to participate in the photocatalytic reaction. This study presents a new strategy for constructing binary Pdot photocatalysts by replacing the nonconjugated amphiphilic polymer typically employed in the preparation of polymer nanoparticles (Pdots) with a low-molecular-weight conjugated polyelectrolyte. The as-prepared polyelectrolyte/hydrophobic polymer-based binary Pdots truly enhance the electron transfer between the Pt cocatalyst and the polymer photocatalyst with good water dispersibility. Moreover, unlike the nonconjugated amphiphilic polymer, the photophysics and mechanism of this photocatalytic system through time-correlated single-photon counting (TCSPC) and transient absorption (TA) measurements confirmed the Förster resonance energy transfer (FRET) between the polyelectrolyte as a donor and the hydrophobic polymer as an acceptor. As a result, the designated binary Pdot photocatalysts significantly enhanced the hydrogen evolution rate (HER) of 43 »900 μmol g-1 h-1 (63.5 μmol h-1, at 420 nm) for PTTPA/PFTBTA Pdots under visible-light irradiation. </p>}},
  author       = {{Elsayed, Mohamed Hammad and Abdellah, Mohamed and Hung, Yi Hao and Jayakumar, Jayachandran and Ting, Li Yu and Elewa, Ahmed M. and Chang, Chih Li and Lin, Wei Cheng and Wang, Kuo Lung and Abdel-Hafiez, Mahmoud and Hung, Hsiao Wen and Horie, Masaki and Chou, Ho Hsiu}},
  issn         = {{1944-8244}},
  keywords     = {{binary Pdots; energy transfer; fast electron transfer; hydrogen evolution; hydrophilic and hydrophobic conjugated polymer photocatalysts}},
  language     = {{eng}},
  month        = {{12}},
  number       = {{47}},
  pages        = {{56554--56565}},
  publisher    = {{The American Chemical Society (ACS)}},
  series       = {{ACS Applied Materials and Interfaces}},
  title        = {{Hydrophobic and Hydrophilic Conjugated Polymer Dots as Binary Photocatalysts for Enhanced Visible-Light-Driven Hydrogen Evolution through Förster Resonance Energy Transfer}},
  url          = {{http://dx.doi.org/10.1021/acsami.1c15812}},
  doi          = {{10.1021/acsami.1c15812}},
  volume       = {{13}},
  year         = {{2021}},
}