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Article: Triplet MLCT photosensitization of the ring-closing reaction of diarylethenes by design and synthesis of a photochromic rhenium(I) complex of a diarylethene-containing 1,10-phenanthroline ligand

TitleTriplet MLCT photosensitization of the ring-closing reaction of diarylethenes by design and synthesis of a photochromic rhenium(I) complex of a diarylethene-containing 1,10-phenanthroline ligand
Authors
KeywordsLuminescence N ligands
Photochemistry
Photochromism
Rhenium
Issue Date2006
PublisherWiley - V C H Verlag GmbH & Co KGaA. The Journal's web site is located at http://www.wiley-vch.de/home/chemistry
Citation
Chemistry - A European Journal, 2006, v. 12 n. 22, p. 5840-5848 How to Cite?
AbstractSynthesis of the diaryle-thene-containing ligand LI based on Suzuki cross-coupling reaction between thienyl boronic acid and the dibromophenanthroline ligand is reported. On coordination to the rhenium(I) tricarbonyl complex system, the photochromism of L1 could be photosensitized and consequently extended from intraligand excitation at λ≤340nm in the free ligand to metal-to-ligand charge-transfer (MLCT) excitation atλ≤480nm in the complex. The photo-chromic reactions were studied by 1HNMR, UV/Vis, and steady-state emission spectroscopy. Photosensitization was further probed by ultrafast transient absorption and time-resolved emission spectroscopy. The results provided direct evidence that the formation of the closed form by the MLCT-sensitized photochromic process was derived from the 3MLCT excited state. This supports the photosensitization mechanism, which involves an intramolecular energy-transfer process from the 3MLCT to the 3IL(L1) state that initiated the ring-closure reaction. The photophysical and electrochemical properties of the complex were also investigated. © 2006 Wiley-VCH Verlag GmbH & Co. KGaA.
Persistent Identifierhttp://hdl.handle.net/10722/70080
ISSN
2015 Impact Factor: 5.771
2015 SCImago Journal Rankings: 2.323
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorKo, CCen_HK
dc.contributor.authorKwok, WMen_HK
dc.contributor.authorYam, VWWen_HK
dc.contributor.authorPhillips, DLen_HK
dc.date.accessioned2010-09-06T06:19:31Z-
dc.date.available2010-09-06T06:19:31Z-
dc.date.issued2006en_HK
dc.identifier.citationChemistry - A European Journal, 2006, v. 12 n. 22, p. 5840-5848en_HK
dc.identifier.issn0947-6539en_HK
dc.identifier.urihttp://hdl.handle.net/10722/70080-
dc.description.abstractSynthesis of the diaryle-thene-containing ligand LI based on Suzuki cross-coupling reaction between thienyl boronic acid and the dibromophenanthroline ligand is reported. On coordination to the rhenium(I) tricarbonyl complex system, the photochromism of L1 could be photosensitized and consequently extended from intraligand excitation at λ≤340nm in the free ligand to metal-to-ligand charge-transfer (MLCT) excitation atλ≤480nm in the complex. The photo-chromic reactions were studied by 1HNMR, UV/Vis, and steady-state emission spectroscopy. Photosensitization was further probed by ultrafast transient absorption and time-resolved emission spectroscopy. The results provided direct evidence that the formation of the closed form by the MLCT-sensitized photochromic process was derived from the 3MLCT excited state. This supports the photosensitization mechanism, which involves an intramolecular energy-transfer process from the 3MLCT to the 3IL(L1) state that initiated the ring-closure reaction. The photophysical and electrochemical properties of the complex were also investigated. © 2006 Wiley-VCH Verlag GmbH & Co. KGaA.en_HK
dc.languageengen_HK
dc.publisherWiley - V C H Verlag GmbH & Co KGaA. The Journal's web site is located at http://www.wiley-vch.de/home/chemistryen_HK
dc.relation.ispartofChemistry - A European Journalen_HK
dc.subjectLuminescence N ligandsen_HK
dc.subjectPhotochemistryen_HK
dc.subjectPhotochromismen_HK
dc.subjectRheniumen_HK
dc.titleTriplet MLCT photosensitization of the ring-closing reaction of diarylethenes by design and synthesis of a photochromic rhenium(I) complex of a diarylethene-containing 1,10-phenanthroline liganden_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0947-6539&volume=12&issue=22&spage=5840&epage=5848&date=2006&atitle=Triplet+MLCT+photosensitization+of+the+ring-closing+reaction+of+diarylethenes+by+design+and+synthesis+of+a+photochromic+rhenium(I)+complex+of+a+diarylethene-containing+1,10-phenanthroline+liganden_HK
dc.identifier.emailYam, VWW:wwyam@hku.hken_HK
dc.identifier.emailPhillips, DL:phillips@hku.hken_HK
dc.identifier.authorityYam, VWW=rp00822en_HK
dc.identifier.authorityPhillips, DL=rp00770en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1002/chem.200501325en_HK
dc.identifier.pmid16721884-
dc.identifier.scopuseid_2-s2.0-33746891271en_HK
dc.identifier.hkuros138094en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-33746891271&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume12en_HK
dc.identifier.issue22en_HK
dc.identifier.spage5840en_HK
dc.identifier.epage5848en_HK
dc.identifier.isiWOS:000239481600018-
dc.publisher.placeGermanyen_HK
dc.identifier.scopusauthoridKo, CC=7202596455en_HK
dc.identifier.scopusauthoridKwok, WM=7103129332en_HK
dc.identifier.scopusauthoridYam, VWW=18539304700en_HK
dc.identifier.scopusauthoridPhillips, DL=7404519365en_HK
dc.identifier.citeulike8826346-

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