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Article: Metal coordination-assisted near-infrared photochromic behavior: A large perturbation on absorption wavelength properties of N,N-donor ligands containing diarylethene derivatives by coordination to the rhenium(I) metal center

TitleMetal coordination-assisted near-infrared photochromic behavior: A large perturbation on absorption wavelength properties of N,N-donor ligands containing diarylethene derivatives by coordination to the rhenium(I) metal center
Authors
Issue Date2007
PublisherAmerican Chemical Society. The Journal's web site is located at http://pubs.acs.org/journals/jacsat/index.html
Citation
Journal Of The American Chemical Society, 2007, v. 129 n. 19, p. 6058-6059 How to Cite?
AbstractA new series of diarylethene-containing 1-aryl-substituted 2-(2-pyridyl)imidazole (L) ligands have been prepared and characterized. Subsequent reactions of the 2-(2-pyridyl)imidazole ligands with Re(CO) 5Cl under reflux conditions afforded [Re(CO) 3(L)Cl]; one of the complexes has also been structurally determined. The open forms of the ligands showed an intense absorption band at ca. 320 nm corresponding to π → π* and n → π* transitions of the 1-aryl-2-(2-pyridyl)imidazole moiety, with mixing of π → π* and n → π* transitions of the thiophene moieties. The corresponding rhenium(I) complexes showed IL absorption bands at ca. 352 nm, with additional MLCT [dπ(Re) → π*(L)] transitions at ca. 425 nm. Upon photocyclization of the diarylethene moieties by UV irradiation, two new absorption bands emerged at ca. 410-425 and 576-586 nm for the ligands, while the rhenium(I) complexes showed three new absorption bands at ca. 288-290, 475-480, and 712-713 nm upon excitation into either the IL or MLCT bands. Such a large shift of the absorption bands of the closed forms of the rhenium(I) complexes to the NIR region could be attributed to the planarization of the four heterocyclic rings relative to the open forms. On the contrary, the organic ligand systems alone did not display such a shift of the absorption maxima to the NIR region upon photocyclization. Copyright © 2007 American Chemical Society.
Persistent Identifierhttp://hdl.handle.net/10722/168111
ISSN
2015 Impact Factor: 13.038
2015 SCImago Journal Rankings: 7.123
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorLee, PHMen_HK
dc.contributor.authorKo, CCen_HK
dc.contributor.authorZhu, Nen_HK
dc.contributor.authorYam, VWWen_HK
dc.date.accessioned2012-10-08T03:15:11Z-
dc.date.available2012-10-08T03:15:11Z-
dc.date.issued2007en_HK
dc.identifier.citationJournal Of The American Chemical Society, 2007, v. 129 n. 19, p. 6058-6059en_HK
dc.identifier.issn0002-7863en_HK
dc.identifier.urihttp://hdl.handle.net/10722/168111-
dc.description.abstractA new series of diarylethene-containing 1-aryl-substituted 2-(2-pyridyl)imidazole (L) ligands have been prepared and characterized. Subsequent reactions of the 2-(2-pyridyl)imidazole ligands with Re(CO) 5Cl under reflux conditions afforded [Re(CO) 3(L)Cl]; one of the complexes has also been structurally determined. The open forms of the ligands showed an intense absorption band at ca. 320 nm corresponding to π → π* and n → π* transitions of the 1-aryl-2-(2-pyridyl)imidazole moiety, with mixing of π → π* and n → π* transitions of the thiophene moieties. The corresponding rhenium(I) complexes showed IL absorption bands at ca. 352 nm, with additional MLCT [dπ(Re) → π*(L)] transitions at ca. 425 nm. Upon photocyclization of the diarylethene moieties by UV irradiation, two new absorption bands emerged at ca. 410-425 and 576-586 nm for the ligands, while the rhenium(I) complexes showed three new absorption bands at ca. 288-290, 475-480, and 712-713 nm upon excitation into either the IL or MLCT bands. Such a large shift of the absorption bands of the closed forms of the rhenium(I) complexes to the NIR region could be attributed to the planarization of the four heterocyclic rings relative to the open forms. On the contrary, the organic ligand systems alone did not display such a shift of the absorption maxima to the NIR region upon photocyclization. Copyright © 2007 American Chemical Society.en_HK
dc.languageengen_US
dc.publisherAmerican Chemical Society. The Journal's web site is located at http://pubs.acs.org/journals/jacsat/index.htmlen_HK
dc.relation.ispartofJournal of the American Chemical Societyen_HK
dc.titleMetal coordination-assisted near-infrared photochromic behavior: A large perturbation on absorption wavelength properties of N,N-donor ligands containing diarylethene derivatives by coordination to the rhenium(I) metal centeren_HK
dc.typeArticleen_HK
dc.identifier.emailZhu, N: nzhu@hkucc.hku.hken_HK
dc.identifier.emailYam, VWW: wwyam@hku.hken_HK
dc.identifier.authorityZhu, N=rp00845en_HK
dc.identifier.authorityYam, VWW=rp00822en_HK
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1021/ja067425ren_HK
dc.identifier.pmid17455932-
dc.identifier.scopuseid_2-s2.0-34249001632en_HK
dc.identifier.hkuros136478-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-34249001632&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume129en_HK
dc.identifier.issue19en_HK
dc.identifier.spage6058en_HK
dc.identifier.epage6059en_HK
dc.identifier.isiWOS:000246415100001-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridLee, PHM=36546334100en_HK
dc.identifier.scopusauthoridKo, CC=7202596455en_HK
dc.identifier.scopusauthoridZhu, N=7201449530en_HK
dc.identifier.scopusauthoridYam, VWW=18539304700en_HK
dc.identifier.citeulike4810610-

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