Ir(III)-Naphthoquinone complex as a platform for photocatalytic activity

Walter D. Guerra; Hannah J. Sayre; Hunter H. Ripberger; Emmanuel Odella; Gregory D. Scholes; Thomas A. Moore; Robert R. Knowles; Ana L. Moore

doi:10.1016/j.jpap.2021.100098

Ir(III)-Naphthoquinone complex as a platform for photocatalytic activity

Walter D. Guerra, Hannah J. Sayre, Hunter H. Ripberger, Emmanuel Odella, Gregory D. Scholes, Thomas A. Moore, Robert R. Knowles, Ana L. Moore

Molecular Sciences, School of (SMS)

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

2 Scopus citations

Abstract

Inspired by the primary events that take place in Photosystem II (PSII), we designed and synthesized a heteroleptic Ir(III) complex featuring an attached naphthoquinone (NQ) as an electron transfer (ET) auxiliary reminiscent of the plastoquinone electron acceptor in PSII. In this design, NQ is covalently attached to the 2,2′-bipyridyl (bpy) ligand of [Ir(dF(CF₃)ppy)₂(bpy)][PF₆], (dF(CF₃)ppy = 2-(2,4-difluorophenyl)-5-(trifluoromethyl)pyridine). Following excitation of the photocatalyst ([Ir(dF(CF₃)ppy)₂(bpy-NQ)][PF₆]), reduced NQ (NQ^•‒) was observed in transient absorption spectroscopy. This novel catalyst has potential applications in oxidative and reductive photocatalytic processes.

Original language	English (US)
Article number	100098
Journal	Journal of Photochemistry and Photobiology
Volume	9
DOIs	https://doi.org/10.1016/j.jpap.2021.100098
State	Published - Mar 2022

Keywords

Artificial photosynthesis
electron transfer (ET)
heteroleptic Ir(III) complexes
photocatalyst
quinones

ASJC Scopus subject areas

Electrochemistry

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@article{7230418376e040729aeb213cb439f7bc,

title = "Ir(III)-Naphthoquinone complex as a platform for photocatalytic activity",

abstract = "Inspired by the primary events that take place in Photosystem II (PSII), we designed and synthesized a heteroleptic Ir(III) complex featuring an attached naphthoquinone (NQ) as an electron transfer (ET) auxiliary reminiscent of the plastoquinone electron acceptor in PSII. In this design, NQ is covalently attached to the 2,2′-bipyridyl (bpy) ligand of [Ir(dF(CF3)ppy)2(bpy)][PF6], (dF(CF3)ppy = 2-(2,4-difluorophenyl)-5-(trifluoromethyl)pyridine). Following excitation of the photocatalyst ([Ir(dF(CF3)ppy)2(bpy-NQ)][PF6]), reduced NQ (NQ•‒) was observed in transient absorption spectroscopy. This novel catalyst has potential applications in oxidative and reductive photocatalytic processes.",

keywords = "Artificial photosynthesis, electron transfer (ET), heteroleptic Ir(III) complexes, photocatalyst, quinones",

author = "Guerra, {Walter D.} and Sayre, {Hannah J.} and Ripberger, {Hunter H.} and Emmanuel Odella and Scholes, {Gregory D.} and Moore, {Thomas A.} and Knowles, {Robert R.} and Moore, {Ana L.}",

note = "Publisher Copyright: {\textcopyright} 2021 The Authors",

year = "2022",

month = mar,

doi = "10.1016/j.jpap.2021.100098",

language = "English (US)",

volume = "9",

journal = "Journal of Photochemistry and Photobiology",

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T1 - Ir(III)-Naphthoquinone complex as a platform for photocatalytic activity

AU - Guerra, Walter D.

AU - Sayre, Hannah J.

AU - Ripberger, Hunter H.

AU - Odella, Emmanuel

AU - Scholes, Gregory D.

AU - Moore, Thomas A.

AU - Knowles, Robert R.

AU - Moore, Ana L.

PY - 2022/3

Y1 - 2022/3

N2 - Inspired by the primary events that take place in Photosystem II (PSII), we designed and synthesized a heteroleptic Ir(III) complex featuring an attached naphthoquinone (NQ) as an electron transfer (ET) auxiliary reminiscent of the plastoquinone electron acceptor in PSII. In this design, NQ is covalently attached to the 2,2′-bipyridyl (bpy) ligand of [Ir(dF(CF3)ppy)2(bpy)][PF6], (dF(CF3)ppy = 2-(2,4-difluorophenyl)-5-(trifluoromethyl)pyridine). Following excitation of the photocatalyst ([Ir(dF(CF3)ppy)2(bpy-NQ)][PF6]), reduced NQ (NQ•‒) was observed in transient absorption spectroscopy. This novel catalyst has potential applications in oxidative and reductive photocatalytic processes.

AB - Inspired by the primary events that take place in Photosystem II (PSII), we designed and synthesized a heteroleptic Ir(III) complex featuring an attached naphthoquinone (NQ) as an electron transfer (ET) auxiliary reminiscent of the plastoquinone electron acceptor in PSII. In this design, NQ is covalently attached to the 2,2′-bipyridyl (bpy) ligand of [Ir(dF(CF3)ppy)2(bpy)][PF6], (dF(CF3)ppy = 2-(2,4-difluorophenyl)-5-(trifluoromethyl)pyridine). Following excitation of the photocatalyst ([Ir(dF(CF3)ppy)2(bpy-NQ)][PF6]), reduced NQ (NQ•‒) was observed in transient absorption spectroscopy. This novel catalyst has potential applications in oxidative and reductive photocatalytic processes.

KW - Artificial photosynthesis

KW - electron transfer (ET)

KW - heteroleptic Ir(III) complexes

KW - photocatalyst

KW - quinones

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DO - 10.1016/j.jpap.2021.100098

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AN - SCOPUS:85129754290

SN - 2666-4690

VL - 9

JO - Journal of Photochemistry and Photobiology

JF - Journal of Photochemistry and Photobiology

M1 - 100098

ER -

Ir(III)-Naphthoquinone complex as a platform for photocatalytic activity

Abstract

Keywords

ASJC Scopus subject areas

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