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

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

Frontiers in chemistry (2020-11-17)
Aoibhín A Cullen, Katharina Heintz, Laura O'Reilly, Conor Long, Andreas Heise, Robert Murphy, Joshua Karlsson, Elizabeth Gibson, Gregory M Greetham, Michael Towrie, Mary T Pryce
초록

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.

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Sigma-Aldrich
3-(Trimethylsilyl)ethynylbenzaldehyde, 95%
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