Time resolved structural dynamics of butadiyne-linked porphyrin dimers

Franco V. A. Camargo; Christopher R. Hall; Harry L. Anderson; Stephen R. Meech; Ismael A. Heisler

doi:10.1063/1.4940222

Time resolved structural dynamics of butadiyne-linked porphyrin dimers

Franco V. A. Camargo, Christopher R. Hall, Harry L. Anderson, Stephen R. Meech, Ismael A. Heisler

Physical Chemistry and Pharmaceutics

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

9 Citations (Scopus)

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Abstract

In this work the timescales and mechanisms associated with the structural dynamics of butadiyne-linked porphyrin dimers are investigated through time resolved narrowband pump / broadband probe transient absorption spectroscopy. Our results confirm previous findings that the broadening is partly due to a distribution of structures with different (dihedral) angular conformations. Comparison of measurements with excitations on the red and blue sides of the Q-band unravel the ground and excited state conformational re-equilibration timescales. Further comparison to a planarized dimer, through addition of a ligand, provide conclusive evidence for the twisting motion performed by the porphyrin dimer in solution.

Original language	English
Article number	023608
Number of pages	12
Journal	Structural Dynamics
Volume	3
Early online date	14 Jan 2016
DOIs	https://doi.org/10.1063/1.4940222
Publication status	Published - Mar 2016

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10.1063/1.4940222Licence: CC BY

2DES Porphyrin Dimer Ligand paper SD Final - RevisedAccepted author manuscript, 112 KB
2DES Porphyrin Dimer Ligand paper SD Supp Info FinalAccepted author manuscript, 2.51 MB
Camargo et al 2016
C 2016 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license
Final published version, 2.22 MBLicence: CC BY

Ultrafast Multidimensional Spectroscopy for Photomolecular Science
Meech, S. & Heisler, I.
Engineering and Physical Sciences Research Council
22/10/12 → 23/02/17
Project: Research
EPSRC Equipment Grant - Prof Steve Meech
Meech, S. & Richardson, D.
Engineering and Physical Sciences Research Council
1/04/12 → 31/03/22
Project: Research

Cite this

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title = "Time resolved structural dynamics of butadiyne-linked porphyrin dimers",

abstract = "In this work the timescales and mechanisms associated with the structural dynamics of butadiyne-linked porphyrin dimers are investigated through time resolved narrowband pump / broadband probe transient absorption spectroscopy. Our results confirm previous findings that the broadening is partly due to a distribution of structures with different (dihedral) angular conformations. Comparison of measurements with excitations on the red and blue sides of the Q-band unravel the ground and excited state conformational re-equilibration timescales. Further comparison to a planarized dimer, through addition of a ligand, provide conclusive evidence for the twisting motion performed by the porphyrin dimer in solution.",

author = "Camargo, {Franco V. A.} and Hall, {Christopher R.} and Anderson, {Harry L.} and Meech, {Stephen R.} and Heisler, {Ismael A.}",

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doi = "10.1063/1.4940222",

language = "English",

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AU - Camargo, Franco V. A.

AU - Hall, Christopher R.

AU - Anderson, Harry L.

AU - Meech, Stephen R.

AU - Heisler, Ismael A.

PY - 2016/3

Y1 - 2016/3

N2 - In this work the timescales and mechanisms associated with the structural dynamics of butadiyne-linked porphyrin dimers are investigated through time resolved narrowband pump / broadband probe transient absorption spectroscopy. Our results confirm previous findings that the broadening is partly due to a distribution of structures with different (dihedral) angular conformations. Comparison of measurements with excitations on the red and blue sides of the Q-band unravel the ground and excited state conformational re-equilibration timescales. Further comparison to a planarized dimer, through addition of a ligand, provide conclusive evidence for the twisting motion performed by the porphyrin dimer in solution.

AB - In this work the timescales and mechanisms associated with the structural dynamics of butadiyne-linked porphyrin dimers are investigated through time resolved narrowband pump / broadband probe transient absorption spectroscopy. Our results confirm previous findings that the broadening is partly due to a distribution of structures with different (dihedral) angular conformations. Comparison of measurements with excitations on the red and blue sides of the Q-band unravel the ground and excited state conformational re-equilibration timescales. Further comparison to a planarized dimer, through addition of a ligand, provide conclusive evidence for the twisting motion performed by the porphyrin dimer in solution.

U2 - 10.1063/1.4940222

DO - 10.1063/1.4940222

M3 - Article

SN - 2329-7778

VL - 3

JO - Structural Dynamics

JF - Structural Dynamics

M1 - 023608

ER -

Time resolved structural dynamics of butadiyne-linked porphyrin dimers

Abstract

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Projects

Ultrafast Multidimensional Spectroscopy for Photomolecular Science

EPSRC Equipment Grant - Prof Steve Meech

Cite this