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Article: Luminescent alkynylplatinum(II) terpyridyl metallogels stabilized by Pt ⋯Pt, π-π and hydrophobic-hydrophobic interactions

TitleLuminescent alkynylplatinum(II) terpyridyl metallogels stabilized by Pt ⋯Pt, π-π and hydrophobic-hydrophobic interactions
Authors
Issue Date2009
PublisherAmerican Chemical Society. The Journal's web site is located at http://pubs.acs.org/langmuir
Citation
Langmuir, 2009, v. 25 n. 15, p. 8685-8695 How to Cite?
AbstractA series of luminescent alkynylplatinum(II) terpyridyl complexes have been synthesized and characterized by 1H NMR, IR, FAB-mass spectrometry, and elemental analysis; one of the platinum(II) complexes has also been structurally characterized by X-ray crystallography. Their electrochemical and photophysical properties have also been investigated. A majority of the complexes were able to form stable thermoreversible metallogels in organic solvents, tested by the "stable-to-inversion of a test tube" method. Transmission electron microscopy (TEM) and scanning electron microscopy (SEM) of the xerogels showed typical fibrous structures on the micrometer scale. Interestingly, whereas 2-OTf, 3-OTf, and 5-PF6;formed thermotropic metallogels mainly through van der Waals' forces with different emission colors, 1-X (X = OTf, BF4, PF6, and ClO4) showed additional Pt- • -Pt and π-π interactions to stabilize the resultant metallogels and showed drastic color changes during the gel-to-sol phase transition. The metallogels of 1-X were also different colors, depending on the nature of the counter anions, which governs the degree of aggregation and the extent of Pt ⋯ Pt and π-π interactions involved in the gelation process. This property may be utilized to serve as an effective reporter for microenvironmental changes. © 2009 American Chemical Society.
Persistent Identifierhttp://hdl.handle.net/10722/168430
ISSN
2015 Impact Factor: 3.993
2015 SCImago Journal Rankings: 1.750
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorTam, AYYen_HK
dc.contributor.authorWong, KMCen_HK
dc.contributor.authorZhu, Nen_HK
dc.contributor.authorWang, Gen_HK
dc.contributor.authorYam, VWWen_HK
dc.date.accessioned2012-10-08T03:18:51Z-
dc.date.available2012-10-08T03:18:51Z-
dc.date.issued2009en_HK
dc.identifier.citationLangmuir, 2009, v. 25 n. 15, p. 8685-8695en_HK
dc.identifier.issn0743-7463en_HK
dc.identifier.urihttp://hdl.handle.net/10722/168430-
dc.description.abstractA series of luminescent alkynylplatinum(II) terpyridyl complexes have been synthesized and characterized by 1H NMR, IR, FAB-mass spectrometry, and elemental analysis; one of the platinum(II) complexes has also been structurally characterized by X-ray crystallography. Their electrochemical and photophysical properties have also been investigated. A majority of the complexes were able to form stable thermoreversible metallogels in organic solvents, tested by the "stable-to-inversion of a test tube" method. Transmission electron microscopy (TEM) and scanning electron microscopy (SEM) of the xerogels showed typical fibrous structures on the micrometer scale. Interestingly, whereas 2-OTf, 3-OTf, and 5-PF6;formed thermotropic metallogels mainly through van der Waals' forces with different emission colors, 1-X (X = OTf, BF4, PF6, and ClO4) showed additional Pt- • -Pt and π-π interactions to stabilize the resultant metallogels and showed drastic color changes during the gel-to-sol phase transition. The metallogels of 1-X were also different colors, depending on the nature of the counter anions, which governs the degree of aggregation and the extent of Pt ⋯ Pt and π-π interactions involved in the gelation process. This property may be utilized to serve as an effective reporter for microenvironmental changes. © 2009 American Chemical Society.en_HK
dc.languageengen_US
dc.publisherAmerican Chemical Society. The Journal's web site is located at http://pubs.acs.org/langmuiren_HK
dc.relation.ispartofLangmuiren_HK
dc.titleLuminescent alkynylplatinum(II) terpyridyl metallogels stabilized by Pt ⋯Pt, π-π and hydrophobic-hydrophobic interactionsen_HK
dc.typeArticleen_HK
dc.identifier.emailWong, KMC: wongmc@hku.hken_HK
dc.identifier.emailZhu, N: nzhu@hkucc.hku.hken_HK
dc.identifier.emailYam, VWW: wwyam@hku.hken_HK
dc.identifier.authorityWong, KMC=rp00809en_HK
dc.identifier.authorityZhu, N=rp00845en_HK
dc.identifier.authorityYam, VWW=rp00822en_HK
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1021/la804326cen_HK
dc.identifier.pmid19499924-
dc.identifier.scopuseid_2-s2.0-75249105323en_HK
dc.identifier.hkuros171173-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-75249105323&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume25en_HK
dc.identifier.issue15en_HK
dc.identifier.spage8685en_HK
dc.identifier.epage8695en_HK
dc.identifier.isiWOS:000268231500051-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridTam, AYY=16643873800en_HK
dc.identifier.scopusauthoridWong, KMC=8061067200en_HK
dc.identifier.scopusauthoridZhu, N=7201449530en_HK
dc.identifier.scopusauthoridWang, G=7407150976en_HK
dc.identifier.scopusauthoridYam, VWW=18539304700en_HK

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