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Synthesis, Electrochemistry, and Excited-State Properties of Three Ru(II) Quaterpyridine Complexes
Jennifer Rudd 
,
M. Kyle Brennaman,
Katherine E. Michaux,
Dennis L. Ashford,
Royce W. Murray,
Thomas. J. Meyer
,
M. Kyle Brennaman,
Katherine E. Michaux,
Dennis L. Ashford,
Royce W. Murray,
Thomas. J. Meyer
The Journal of Physical Chemistry A, Volume: 120, Issue: 11, Pages: 1845 - 1852
Swansea University Author:
Jennifer Rudd
-
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DOI (Published version): 10.1021/acs.jpca.6b00317
Abstract
The complexes [Ru(qpy)LL′]2+ (qpy = 2,2′:6′,2″:6″,2‴-quaterpyridine), with 1: L = acetonitrile, L′= chloride; 2: L = L′= acetonitrile; and 3: L = L′= vinylpyridine, have been prepared from [Ru(qpy) (Cl)2]. Their absorption spectra in CH3CN exhibit broad metal-to-ligand charge transfer (MLCT) absorpt...
| Published in: | The Journal of Physical Chemistry A |
|---|---|
| ISSN: | 1089-5639 1520-5215 |
| Published: |
2016
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| Online Access: |
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| URI: | https://cronfa.swan.ac.uk/Record/cronfa38733 |
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2018-02-15T20:29:38Z |
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| last_indexed |
2018-03-02T14:27:31Z |
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cronfa38733 |
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2018-03-02T11:03:24.9170270 v2 38733 2018-02-15 Synthesis, Electrochemistry, and Excited-State Properties of Three Ru(II) Quaterpyridine Complexes c2e4cf0f048a86b5ca2f331e6c566aff 0000-0002-5209-477X Jennifer Rudd Jennifer Rudd true false 2018-02-15 CBAE The complexes [Ru(qpy)LL′]2+ (qpy = 2,2′:6′,2″:6″,2‴-quaterpyridine), with 1: L = acetonitrile, L′= chloride; 2: L = L′= acetonitrile; and 3: L = L′= vinylpyridine, have been prepared from [Ru(qpy) (Cl)2]. Their absorption spectra in CH3CN exhibit broad metal-to-ligand charge transfer (MLCT) absorptions arising from overlapping 1A1 → 1MLCT transitions. Photoluminescence is not observed at room temperature, but all three are weakly emissive in 4:1 ethanol/methanol glasses at 77 K with broad, featureless emissions observed between 600 and 1000 nm consistent with MLCT phosphorescence. Cyclic voltammograms in CH3CN reveal the expected RuIII/II redox couples. In 0.1 M trifluoroacetic acid (TFA), 1 and 2 undergo aquation to give [RuII(qpy)(OH2)2]2+, as evidenced by the appearance of waves for the couples [RuIII(qpy)(OH2)2]3+/[RuII(qpy)(OH2)2]2+, [RuIV(qpy)(O)(OH2)]2+/[RuIII(qpy)(OH2)2]3+, and [RuVI(qpy)(O)2]2+/[RuIV(qpy)(O)(OH2)]2+ in cyclic voltammograms. Journal Article The Journal of Physical Chemistry A 120 11 1845 1852 1089-5639 1520-5215 24 3 2016 2016-03-24 10.1021/acs.jpca.6b00317 http://www.scopus.com/inward/record.url?eid=2-s2.0-84962184461&partnerID=MN8TOARS COLLEGE NANME Management School COLLEGE CODE CBAE Swansea University 2018-03-02T11:03:24.9170270 2018-02-15T13:34:58.2735857 Faculty of Science and Engineering School of Engineering and Applied Sciences - Uncategorised Jennifer Rudd 0000-0002-5209-477X 1 M. Kyle Brennaman 2 Katherine E. Michaux 3 Dennis L. Ashford 4 Royce W. Murray 5 Thomas. J. Meyer 6 0038733-02032018110300.pdf rudd2016.pdf 2018-03-02T11:03:00.7070000 Output 762428 application/pdf Version of Record true 2018-03-02T00:00:00.0000000 false eng |
| title |
Synthesis, Electrochemistry, and Excited-State Properties of Three Ru(II) Quaterpyridine Complexes |
| spellingShingle |
Synthesis, Electrochemistry, and Excited-State Properties of Three Ru(II) Quaterpyridine Complexes Jennifer Rudd |
| title_short |
Synthesis, Electrochemistry, and Excited-State Properties of Three Ru(II) Quaterpyridine Complexes |
| title_full |
Synthesis, Electrochemistry, and Excited-State Properties of Three Ru(II) Quaterpyridine Complexes |
| title_fullStr |
Synthesis, Electrochemistry, and Excited-State Properties of Three Ru(II) Quaterpyridine Complexes |
| title_full_unstemmed |
Synthesis, Electrochemistry, and Excited-State Properties of Three Ru(II) Quaterpyridine Complexes |
| title_sort |
Synthesis, Electrochemistry, and Excited-State Properties of Three Ru(II) Quaterpyridine Complexes |
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c2e4cf0f048a86b5ca2f331e6c566aff |
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c2e4cf0f048a86b5ca2f331e6c566aff_***_Jennifer Rudd |
| author |
Jennifer Rudd |
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Jennifer Rudd M. Kyle Brennaman Katherine E. Michaux Dennis L. Ashford Royce W. Murray Thomas. J. Meyer |
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The Journal of Physical Chemistry A |
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1845 |
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2016 |
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Swansea University |
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10.1021/acs.jpca.6b00317 |
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The complexes [Ru(qpy)LL′]2+ (qpy = 2,2′:6′,2″:6″,2‴-quaterpyridine), with 1: L = acetonitrile, L′= chloride; 2: L = L′= acetonitrile; and 3: L = L′= vinylpyridine, have been prepared from [Ru(qpy) (Cl)2]. Their absorption spectra in CH3CN exhibit broad metal-to-ligand charge transfer (MLCT) absorptions arising from overlapping 1A1 → 1MLCT transitions. Photoluminescence is not observed at room temperature, but all three are weakly emissive in 4:1 ethanol/methanol glasses at 77 K with broad, featureless emissions observed between 600 and 1000 nm consistent with MLCT phosphorescence. Cyclic voltammograms in CH3CN reveal the expected RuIII/II redox couples. In 0.1 M trifluoroacetic acid (TFA), 1 and 2 undergo aquation to give [RuII(qpy)(OH2)2]2+, as evidenced by the appearance of waves for the couples [RuIII(qpy)(OH2)2]3+/[RuII(qpy)(OH2)2]2+, [RuIV(qpy)(O)(OH2)]2+/[RuIII(qpy)(OH2)2]3+, and [RuVI(qpy)(O)2]2+/[RuIV(qpy)(O)(OH2)]2+ in cyclic voltammograms. |
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2016-03-24T01:41:12Z |
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11.064692 |