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Transient Resonance Raman Studies of Ru(II) Complexes in DNA and in Homogeneous Media
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Zeitschriftentitel: | Laser Chemistry |
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Personen und Körperschaften: | , , , , , , |
In: | Laser Chemistry, 19, 1999, 1-4, S. 237-243 |
Format: | E-Article |
Sprache: | Englisch |
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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. |
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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. |
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 |
facet_avail |
Online Free |
finc_class_facet |
Physik Chemie und Pharmazie |
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ElectronicArticle |
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ai-49-aHR0cDovL2R4LmRvaS5vcmcvMTAuMTE1NS8xOTk5Lzc0NTg3 |
institution |
DE-L229 DE-D275 DE-Bn3 DE-Brt1 DE-Zwi2 DE-D161 DE-Gla1 DE-Zi4 DE-15 DE-Pl11 DE-Rs1 DE-105 DE-14 DE-Ch1 |
imprint |
Hindawi Limited, 1999 |
imprint_str_mv |
Hindawi Limited, 1999 |
issn |
0278-6273 1476-3516 |
issn_str_mv |
0278-6273 1476-3516 |
language |
English |
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Hindawi Limited (CrossRef) |
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coates1999transientresonanceramanstudiesofruiicomplexesindnaandinhomogeneousmedia |
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 |
container_start_page | 237 |
container_title | Laser Chemistry |
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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> |
doi_str_mv | 10.1155/1999/74587 |
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id | ai-49-aHR0cDovL2R4LmRvaS5vcmcvMTAuMTE1NS8xOTk5Lzc0NTg3 |
imprint | Hindawi Limited, 1999 |
imprint_str_mv | Hindawi Limited, 1999 |
institution | DE-L229, DE-D275, DE-Bn3, DE-Brt1, DE-Zwi2, DE-D161, DE-Gla1, DE-Zi4, DE-15, DE-Pl11, DE-Rs1, DE-105, DE-14, DE-Ch1 |
issn | 0278-6273, 1476-3516 |
issn_str_mv | 0278-6273, 1476-3516 |
language | English |
last_indexed | 2024-03-01T12:58:54.889Z |
match_str | coates1999transientresonanceramanstudiesofruiicomplexesindnaandinhomogeneousmedia |
mega_collection | Hindawi Limited (CrossRef) |
physical | 237-243 |
publishDate | 1999 |
publishDateSort | 1999 |
publisher | Hindawi Limited |
record_format | ai |
recordtype | ai |
series | Laser Chemistry |
source_id | 49 |
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 |