author_facet Coates, Colin G.
McGarvey, John J.
Bell, Steven E. J.
Jacquet, Luc
Kelly, John M.
Keyes, Tia
Vos, Johannes G.
Coates, Colin G.
McGarvey, John J.
Bell, Steven E. J.
Jacquet, Luc
Kelly, John M.
Keyes, Tia
Vos, Johannes G.
author Coates, Colin G.
McGarvey, John J.
Bell, Steven E. J.
Jacquet, Luc
Kelly, John M.
Keyes, Tia
Vos, Johannes G.
spellingShingle Coates, Colin G.
McGarvey, John J.
Bell, Steven E. J.
Jacquet, Luc
Kelly, John M.
Keyes, Tia
Vos, Johannes G.
Laser Chemistry
Transient Resonance Raman Studies of Ru(II) Complexes in DNA and in Homogeneous Media
Spectroscopy
Biochemistry
Atomic and Molecular Physics, and Optics
author_sort coates, colin g.
spelling Coates, Colin G. McGarvey, John J. Bell, Steven E. J. Jacquet, Luc Kelly, John M. Keyes, Tia Vos, Johannes G. 0278-6273 1476-3516 Hindawi Limited Spectroscopy Biochemistry Atomic and Molecular Physics, and Optics http://dx.doi.org/10.1155/1999/74587 <jats:p>Transient resonance Raman (TR<jats:sup>2</jats:sup>) spectroscopy has been used to investigate the metalligand charge-transfer (MLCT) excited states of Ru(II) polypyridyl complexes inDNAand in homogeneous solution. In DNA, complexes of the type [Ru(L)<jats:sub>2</jats:sub>(L′)]<jats:sup>2+</jats:sup> were studied, where L=2, 2<jats:sup>’</jats:sup>-bipyridyl (bpy), 1,4, 5, 8-tetraazaphenanthrene (tap), and L′ dipyrido [3,2:a-2′ ,3′:c]-phenazine (dppz) or 1,4,5,8,9,12-hexaazatriphenylene (HAT). For [Ru(bpy)<jats:sub>2</jats:sub>(HAT)]<jats:sup>2+</jats:sup>, the enhancement pattern of vibrational modes in the TR<jats:sup>2</jats:sup> spectra attributable to reduced <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msup><mml:mrow><mml:mtext>HAT</mml:mtext></mml:mrow><mml:mrow><mml:mo>⋅</mml:mo><mml:mo>−</mml:mo></mml:mrow></mml:msup></mml:mrow></mml:math> in the triplet MLCT state suggest perturbations to the intraligand transition of <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msup><mml:mrow><mml:mtext>HAT</mml:mtext></mml:mrow><mml:mrow><mml:mo>⋅</mml:mo><mml:mo>−</mml:mo></mml:mrow></mml:msup></mml:mrow></mml:math> in the presence of DNA. Transient RR spectra for [Ru(tap)<jats:sub>2</jats:sub>(dppz)]<jats:sup>2+</jats:sup> are indicative of formation of the species Run<jats:sup>II</jats:sup>(<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msup><mml:mrow><mml:mtext>tap</mml:mtext></mml:mrow><mml:mrow><mml:mo>⋅</mml:mo><mml:mo>−</mml:mo></mml:mrow></mml:msup></mml:mrow></mml:math>)(tap)(dppz) by electron transfer from DNA to the triplet MLCT state of the complex.</jats:p><jats:p>TR<jats:sup>2</jats:sup> spectra for complexes of the type, <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msup><mml:mrow><mml:mrow><mml:mo>[</mml:mo><mml:mrow><mml:msub><mml:mrow><mml:mrow><mml:mo>(</mml:mo><mml:mrow><mml:mtext>Ru</mml:mtext><mml:msub><mml:mrow><mml:mrow><mml:mo>(</mml:mo><mml:mrow><mml:mtext>bpy</mml:mtext></mml:mrow><mml:mo>)</mml:mo></mml:mrow></mml:mrow><mml:mn>2</mml:mn></mml:msub></mml:mrow><mml:mo>)</mml:mo></mml:mrow></mml:mrow><mml:mi>n</mml:mi></mml:msub><mml:mrow><mml:mo>(</mml:mo><mml:mtext>L</mml:mtext><mml:mo>)</mml:mo></mml:mrow></mml:mrow><mml:mo>]</mml:mo></mml:mrow></mml:mrow><mml:mrow><mml:mn>2</mml:mn><mml:mo>+</mml:mo></mml:mrow></mml:msup></mml:mrow></mml:math> , n=1, 2 where L=a triazole bridging ligand, illustrate the use of the technique as a probe of the response of MLCT states to the electronic environment.</jats:p> Transient Resonance Raman Studies of Ru(II) Complexes in DNA and in Homogeneous Media Laser Chemistry
doi_str_mv 10.1155/1999/74587
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publishDateSort 1999
publisher Hindawi Limited
recordtype ai
record_format ai
series Laser Chemistry
source_id 49
title Transient Resonance Raman Studies of Ru(II) Complexes in DNA and in Homogeneous Media
title_unstemmed Transient Resonance Raman Studies of Ru(II) Complexes in DNA and in Homogeneous Media
title_full Transient Resonance Raman Studies of Ru(II) Complexes in DNA and in Homogeneous Media
title_fullStr Transient Resonance Raman Studies of Ru(II) Complexes in DNA and in Homogeneous Media
title_full_unstemmed Transient Resonance Raman Studies of Ru(II) Complexes in DNA and in Homogeneous Media
title_short Transient Resonance Raman Studies of Ru(II) Complexes in DNA and in Homogeneous Media
title_sort transient resonance raman studies of ru(ii) complexes in dna and in homogeneous media
topic Spectroscopy
Biochemistry
Atomic and Molecular Physics, and Optics
url http://dx.doi.org/10.1155/1999/74587
publishDate 1999
physical 237-243
description <jats:p>Transient resonance Raman (TR<jats:sup>2</jats:sup>) spectroscopy has been used to investigate the metalligand charge-transfer (MLCT) excited states of Ru(II) polypyridyl complexes inDNAand in homogeneous solution. In DNA, complexes of the type [Ru(L)<jats:sub>2</jats:sub>(L′)]<jats:sup>2+</jats:sup> were studied, where L=2, 2<jats:sup>’</jats:sup>-bipyridyl (bpy), 1,4, 5, 8-tetraazaphenanthrene (tap), and L′ dipyrido [3,2:a-2′ ,3′:c]-phenazine (dppz) or 1,4,5,8,9,12-hexaazatriphenylene (HAT). For [Ru(bpy)<jats:sub>2</jats:sub>(HAT)]<jats:sup>2+</jats:sup>, the enhancement pattern of vibrational modes in the TR<jats:sup>2</jats:sup> spectra attributable to reduced <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msup><mml:mrow><mml:mtext>HAT</mml:mtext></mml:mrow><mml:mrow><mml:mo>⋅</mml:mo><mml:mo>−</mml:mo></mml:mrow></mml:msup></mml:mrow></mml:math> in the triplet MLCT state suggest perturbations to the intraligand transition of <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msup><mml:mrow><mml:mtext>HAT</mml:mtext></mml:mrow><mml:mrow><mml:mo>⋅</mml:mo><mml:mo>−</mml:mo></mml:mrow></mml:msup></mml:mrow></mml:math> in the presence of DNA. Transient RR spectra for [Ru(tap)<jats:sub>2</jats:sub>(dppz)]<jats:sup>2+</jats:sup> are indicative of formation of the species Run<jats:sup>II</jats:sup>(<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msup><mml:mrow><mml:mtext>tap</mml:mtext></mml:mrow><mml:mrow><mml:mo>⋅</mml:mo><mml:mo>−</mml:mo></mml:mrow></mml:msup></mml:mrow></mml:math>)(tap)(dppz) by electron transfer from DNA to the triplet MLCT state of the complex.</jats:p><jats:p>TR<jats:sup>2</jats:sup> spectra for complexes of the type, <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msup><mml:mrow><mml:mrow><mml:mo>[</mml:mo><mml:mrow><mml:msub><mml:mrow><mml:mrow><mml:mo>(</mml:mo><mml:mrow><mml:mtext>Ru</mml:mtext><mml:msub><mml:mrow><mml:mrow><mml:mo>(</mml:mo><mml:mrow><mml:mtext>bpy</mml:mtext></mml:mrow><mml:mo>)</mml:mo></mml:mrow></mml:mrow><mml:mn>2</mml:mn></mml:msub></mml:mrow><mml:mo>)</mml:mo></mml:mrow></mml:mrow><mml:mi>n</mml:mi></mml:msub><mml:mrow><mml:mo>(</mml:mo><mml:mtext>L</mml:mtext><mml:mo>)</mml:mo></mml:mrow></mml:mrow><mml:mo>]</mml:mo></mml:mrow></mml:mrow><mml:mrow><mml:mn>2</mml:mn><mml:mo>+</mml:mo></mml:mrow></mml:msup></mml:mrow></mml:math> , n=1, 2 where L=a triazole bridging ligand, illustrate the use of the technique as a probe of the response of MLCT states to the electronic environment.</jats:p>
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author Coates, Colin G., McGarvey, John J., Bell, Steven E. J., Jacquet, Luc, Kelly, John M., Keyes, Tia, Vos, Johannes G.
author_facet Coates, Colin G., McGarvey, John J., Bell, Steven E. J., Jacquet, Luc, Kelly, John M., Keyes, Tia, Vos, Johannes G., Coates, Colin G., McGarvey, John J., Bell, Steven E. J., Jacquet, Luc, Kelly, John M., Keyes, Tia, Vos, Johannes G.
author_sort coates, colin g.
container_issue 1-4
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description <jats:p>Transient resonance Raman (TR<jats:sup>2</jats:sup>) spectroscopy has been used to investigate the metalligand charge-transfer (MLCT) excited states of Ru(II) polypyridyl complexes inDNAand in homogeneous solution. In DNA, complexes of the type [Ru(L)<jats:sub>2</jats:sub>(L′)]<jats:sup>2+</jats:sup> were studied, where L=2, 2<jats:sup>’</jats:sup>-bipyridyl (bpy), 1,4, 5, 8-tetraazaphenanthrene (tap), and L′ dipyrido [3,2:a-2′ ,3′:c]-phenazine (dppz) or 1,4,5,8,9,12-hexaazatriphenylene (HAT). For [Ru(bpy)<jats:sub>2</jats:sub>(HAT)]<jats:sup>2+</jats:sup>, the enhancement pattern of vibrational modes in the TR<jats:sup>2</jats:sup> spectra attributable to reduced <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msup><mml:mrow><mml:mtext>HAT</mml:mtext></mml:mrow><mml:mrow><mml:mo>⋅</mml:mo><mml:mo>−</mml:mo></mml:mrow></mml:msup></mml:mrow></mml:math> in the triplet MLCT state suggest perturbations to the intraligand transition of <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msup><mml:mrow><mml:mtext>HAT</mml:mtext></mml:mrow><mml:mrow><mml:mo>⋅</mml:mo><mml:mo>−</mml:mo></mml:mrow></mml:msup></mml:mrow></mml:math> in the presence of DNA. Transient RR spectra for [Ru(tap)<jats:sub>2</jats:sub>(dppz)]<jats:sup>2+</jats:sup> are indicative of formation of the species Run<jats:sup>II</jats:sup>(<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msup><mml:mrow><mml:mtext>tap</mml:mtext></mml:mrow><mml:mrow><mml:mo>⋅</mml:mo><mml:mo>−</mml:mo></mml:mrow></mml:msup></mml:mrow></mml:math>)(tap)(dppz) by electron transfer from DNA to the triplet MLCT state of the complex.</jats:p><jats:p>TR<jats:sup>2</jats:sup> spectra for complexes of the type, <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msup><mml:mrow><mml:mrow><mml:mo>[</mml:mo><mml:mrow><mml:msub><mml:mrow><mml:mrow><mml:mo>(</mml:mo><mml:mrow><mml:mtext>Ru</mml:mtext><mml:msub><mml:mrow><mml:mrow><mml:mo>(</mml:mo><mml:mrow><mml:mtext>bpy</mml:mtext></mml:mrow><mml:mo>)</mml:mo></mml:mrow></mml:mrow><mml:mn>2</mml:mn></mml:msub></mml:mrow><mml:mo>)</mml:mo></mml:mrow></mml:mrow><mml:mi>n</mml:mi></mml:msub><mml:mrow><mml:mo>(</mml:mo><mml:mtext>L</mml:mtext><mml:mo>)</mml:mo></mml:mrow></mml:mrow><mml:mo>]</mml:mo></mml:mrow></mml:mrow><mml:mrow><mml:mn>2</mml:mn><mml:mo>+</mml:mo></mml:mrow></mml:msup></mml:mrow></mml:math> , n=1, 2 where L=a triazole bridging ligand, illustrate the use of the technique as a probe of the response of MLCT states to the electronic environment.</jats:p>
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imprint Hindawi Limited, 1999
imprint_str_mv Hindawi Limited, 1999
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spelling Coates, Colin G. McGarvey, John J. Bell, Steven E. J. Jacquet, Luc Kelly, John M. Keyes, Tia Vos, Johannes G. 0278-6273 1476-3516 Hindawi Limited Spectroscopy Biochemistry Atomic and Molecular Physics, and Optics http://dx.doi.org/10.1155/1999/74587 <jats:p>Transient resonance Raman (TR<jats:sup>2</jats:sup>) spectroscopy has been used to investigate the metalligand charge-transfer (MLCT) excited states of Ru(II) polypyridyl complexes inDNAand in homogeneous solution. In DNA, complexes of the type [Ru(L)<jats:sub>2</jats:sub>(L′)]<jats:sup>2+</jats:sup> were studied, where L=2, 2<jats:sup>’</jats:sup>-bipyridyl (bpy), 1,4, 5, 8-tetraazaphenanthrene (tap), and L′ dipyrido [3,2:a-2′ ,3′:c]-phenazine (dppz) or 1,4,5,8,9,12-hexaazatriphenylene (HAT). For [Ru(bpy)<jats:sub>2</jats:sub>(HAT)]<jats:sup>2+</jats:sup>, the enhancement pattern of vibrational modes in the TR<jats:sup>2</jats:sup> spectra attributable to reduced <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msup><mml:mrow><mml:mtext>HAT</mml:mtext></mml:mrow><mml:mrow><mml:mo>⋅</mml:mo><mml:mo>−</mml:mo></mml:mrow></mml:msup></mml:mrow></mml:math> in the triplet MLCT state suggest perturbations to the intraligand transition of <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msup><mml:mrow><mml:mtext>HAT</mml:mtext></mml:mrow><mml:mrow><mml:mo>⋅</mml:mo><mml:mo>−</mml:mo></mml:mrow></mml:msup></mml:mrow></mml:math> in the presence of DNA. Transient RR spectra for [Ru(tap)<jats:sub>2</jats:sub>(dppz)]<jats:sup>2+</jats:sup> are indicative of formation of the species Run<jats:sup>II</jats:sup>(<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msup><mml:mrow><mml:mtext>tap</mml:mtext></mml:mrow><mml:mrow><mml:mo>⋅</mml:mo><mml:mo>−</mml:mo></mml:mrow></mml:msup></mml:mrow></mml:math>)(tap)(dppz) by electron transfer from DNA to the triplet MLCT state of the complex.</jats:p><jats:p>TR<jats:sup>2</jats:sup> spectra for complexes of the type, <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msup><mml:mrow><mml:mrow><mml:mo>[</mml:mo><mml:mrow><mml:msub><mml:mrow><mml:mrow><mml:mo>(</mml:mo><mml:mrow><mml:mtext>Ru</mml:mtext><mml:msub><mml:mrow><mml:mrow><mml:mo>(</mml:mo><mml:mrow><mml:mtext>bpy</mml:mtext></mml:mrow><mml:mo>)</mml:mo></mml:mrow></mml:mrow><mml:mn>2</mml:mn></mml:msub></mml:mrow><mml:mo>)</mml:mo></mml:mrow></mml:mrow><mml:mi>n</mml:mi></mml:msub><mml:mrow><mml:mo>(</mml:mo><mml:mtext>L</mml:mtext><mml:mo>)</mml:mo></mml:mrow></mml:mrow><mml:mo>]</mml:mo></mml:mrow></mml:mrow><mml:mrow><mml:mn>2</mml:mn><mml:mo>+</mml:mo></mml:mrow></mml:msup></mml:mrow></mml:math> , n=1, 2 where L=a triazole bridging ligand, illustrate the use of the technique as a probe of the response of MLCT states to the electronic environment.</jats:p> Transient Resonance Raman Studies of Ru(II) Complexes in DNA and in Homogeneous Media Laser Chemistry
spellingShingle Coates, Colin G., McGarvey, John J., Bell, Steven E. J., Jacquet, Luc, Kelly, John M., Keyes, Tia, Vos, Johannes G., Laser Chemistry, Transient Resonance Raman Studies of Ru(II) Complexes in DNA and in Homogeneous Media, Spectroscopy, Biochemistry, Atomic and Molecular Physics, and Optics
title Transient Resonance Raman Studies of Ru(II) Complexes in DNA and in Homogeneous Media
title_full Transient Resonance Raman Studies of Ru(II) Complexes in DNA and in Homogeneous Media
title_fullStr Transient Resonance Raman Studies of Ru(II) Complexes in DNA and in Homogeneous Media
title_full_unstemmed Transient Resonance Raman Studies of Ru(II) Complexes in DNA and in Homogeneous Media
title_short Transient Resonance Raman Studies of Ru(II) Complexes in DNA and in Homogeneous Media
title_sort transient resonance raman studies of ru(ii) complexes in dna and in homogeneous media
title_unstemmed Transient Resonance Raman Studies of Ru(II) Complexes in DNA and in Homogeneous Media
topic Spectroscopy, Biochemistry, Atomic and Molecular Physics, and Optics
url http://dx.doi.org/10.1155/1999/74587