A Time-Resolved Spectroscopic Investigation of a Novel BODIPY Copolymer and Its Potential Use as a Photosensitiser for Hydrogen Evolution

Aoibhin Cullen; Katherine Heintz; Laura  O'Reilly; Conor Long; Andreas Heise; Robert Murphy; Joshua Karlsson; Elizabeth A. Gibson; Gregory M. Greetham; Michael Towrie; Mary T. Pryce

doi:10.3389/fchem.2020.584060

A Time-Resolved Spectroscopic Investigation of a Novel BODIPY Copolymer and Its Potential Use as a Photosensitiser for Hydrogen Evolution

Aoibhin Cullen, Katherine Heintz, Laura O'Reilly, Conor Long, Andreas Heise, Robert Murphy, Joshua Karlsson, Elizabeth A. Gibson, Gregory M. Greetham, Michael Towrie, Mary T. Pryce

Research output: Contribution to journal › Article › Scientific › peer-review

7 Citations (Scopus)

Abstract

A novel 4,4-difuoro-4-bora-3a,4a-diaza-s-indacene (BODIPY) copolymer with diethynylbenzene has been synthesised, and its ability to act as a photosensitiser for the photocatalytic generation of hydrogen was investigated by time-resolved spectroscopic techniques spanning the ps- to ns-timescales. Both transient absorption and time-resolved infrared spectroscopy were used to probe the excited state dynamics of this photosensitising unit in a variety of solvents. These studies indicated how environmental factors can influence the photophysics of the BODIPY polymer. A homogeneous photocatalytic hydrogen evolution system has been developed using the BODIPY copolymer and cobaloxime which provides hydrogen evolution rates of 319 μmol h−1 g−1 after 24 h of visible irradiation.

Original language	English
Journal	Frontiers in Chemistry
Volume	8
DOIs	https://doi.org/10.3389/fchem.2020.584060
Publication status	Published - 19 Oct 2020
Externally published	Yes
Publication type	A1 Journal article-refereed

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title = "A Time-Resolved Spectroscopic Investigation of a Novel BODIPY Copolymer and Its Potential Use as a Photosensitiser for Hydrogen Evolution",

abstract = "A novel 4,4-difuoro-4-bora-3a,4a-diaza-s-indacene (BODIPY) copolymer with diethynylbenzene has been synthesised, and its ability to act as a photosensitiser for the photocatalytic generation of hydrogen was investigated by time-resolved spectroscopic techniques spanning the ps- to ns-timescales. Both transient absorption and time-resolved infrared spectroscopy were used to probe the excited state dynamics of this photosensitising unit in a variety of solvents. These studies indicated how environmental factors can influence the photophysics of the BODIPY polymer. A homogeneous photocatalytic hydrogen evolution system has been developed using the BODIPY copolymer and cobaloxime which provides hydrogen evolution rates of 319 μmol h−1 g−1 after 24 h of visible irradiation.",

author = "Aoibhin Cullen and Katherine Heintz and Laura O'Reilly and Conor Long and Andreas Heise and Robert Murphy and Joshua Karlsson and Gibson, {Elizabeth A.} and Greetham, {Gregory M.} and Michael Towrie and Pryce, {Mary T.}",

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doi = "10.3389/fchem.2020.584060",

language = "English",

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T1 - A Time-Resolved Spectroscopic Investigation of a Novel BODIPY Copolymer and Its Potential Use as a Photosensitiser for Hydrogen Evolution

AU - Cullen, Aoibhin

AU - Heintz, Katherine

AU - O'Reilly, Laura

AU - Long, Conor

AU - Heise, Andreas

AU - Murphy, Robert

AU - Karlsson, Joshua

AU - Gibson, Elizabeth A.

AU - Greetham, Gregory M.

AU - Towrie, Michael

AU - Pryce, Mary T.

PY - 2020/10/19

Y1 - 2020/10/19

N2 - A novel 4,4-difuoro-4-bora-3a,4a-diaza-s-indacene (BODIPY) copolymer with diethynylbenzene has been synthesised, and its ability to act as a photosensitiser for the photocatalytic generation of hydrogen was investigated by time-resolved spectroscopic techniques spanning the ps- to ns-timescales. Both transient absorption and time-resolved infrared spectroscopy were used to probe the excited state dynamics of this photosensitising unit in a variety of solvents. These studies indicated how environmental factors can influence the photophysics of the BODIPY polymer. A homogeneous photocatalytic hydrogen evolution system has been developed using the BODIPY copolymer and cobaloxime which provides hydrogen evolution rates of 319 μmol h−1 g−1 after 24 h of visible irradiation.

AB - A novel 4,4-difuoro-4-bora-3a,4a-diaza-s-indacene (BODIPY) copolymer with diethynylbenzene has been synthesised, and its ability to act as a photosensitiser for the photocatalytic generation of hydrogen was investigated by time-resolved spectroscopic techniques spanning the ps- to ns-timescales. Both transient absorption and time-resolved infrared spectroscopy were used to probe the excited state dynamics of this photosensitising unit in a variety of solvents. These studies indicated how environmental factors can influence the photophysics of the BODIPY polymer. A homogeneous photocatalytic hydrogen evolution system has been developed using the BODIPY copolymer and cobaloxime which provides hydrogen evolution rates of 319 μmol h−1 g−1 after 24 h of visible irradiation.

U2 - 10.3389/fchem.2020.584060

DO - 10.3389/fchem.2020.584060

M3 - Article

SN - 2296-2646

VL - 8

JO - Frontiers in Chemistry

JF - Frontiers in Chemistry

ER -

A Time-Resolved Spectroscopic Investigation of a Novel BODIPY Copolymer and Its Potential Use as a Photosensitiser for Hydrogen Evolution

Abstract

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