Article: Phosphorescent molecular tweezers based on alkynylplatinum(II) terpyridine system: turning on of NIR emission via heterologous Pt...M interactions (M = PtII, PdII, AuIII and AuI)

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- Professor Yam, Vivian Wing Wah
- Dr Wong, Man Chung

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Publisher Website: 10.1039/c2sc00935h
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Title	Phosphorescent molecular tweezers based on alkynylplatinum(II) terpyridine system: turning on of NIR emission via heterologous Pt...M interactions (M = PtII, PdII, AuIII and AuI)
Authors	Tanaka, Y1 Wong, KMC Yam, VWW
Keywords	Alkynylplatinum Building blockes Complex 1 Double salts Guest molecules
Issue Date	2012
Publisher	Royal Society of Chemistry. The Journal's web site is located at http://www.rsc.org/publishing/journals/sc/About.asp
Citation	Chemical Science, 2012, v. 3 n. 4, p. 1185-1191 [How to Cite?] DOI: http://dx.doi.org/10.1039/c2sc00935h
Abstract	A novel molecular tweezers-type complex 1, based on a phosphorescent cationic alkynylplatinum(II) terpyridine building block, has been synthesized and characterized by NMR, mass spectroscopy, elemental analysis and X-ray diffraction study. Host-guest chemistry of the host complex 1 and various guest metal complexes with different ligands, charges and/or metal centres has been investigated. Various metal complexes including the negatively charged platinum complexes can interact with 1 in a 1:1 manner, which is in contrast to the commonly observed formation of insoluble platinum(II) double salts in a one-dimensional infinite chain such as the Magnus's green salt. Upon addition of guest molecules to 1 in CH 2Cl 2 solution, spectroscopic changes with new absorptions and emissions in the lower-energy region were observed as a result of significant metal-metal, π-π, and electrostatic interactions. 1H NMR titration and 2D NMR studies suggest that the host-guest interaction is predominantly in the sandwiched association mode of the molecular tweezers. This journal is © 2012 The Royal Society of Chemistry.
ISSN	2041-6520 2011 Impact Factor: 7.525
DOI	http://dx.doi.org/10.1039/c2sc00935h

DC Field	Value
dc.contributor.author	Tanaka, Y
dc.contributor.author	Wong, KMC
dc.contributor.author	Yam, VWW
dc.date.accessioned	2012-08-16T05:48:50Z
dc.date.available	2012-08-16T05:48:50Z
dc.date.issued	2012
dc.description.abstract	A novel molecular tweezers-type complex 1, based on a phosphorescent cationic alkynylplatinum(II) terpyridine building block, has been synthesized and characterized by NMR, mass spectroscopy, elemental analysis and X-ray diffraction study. Host-guest chemistry of the host complex 1 and various guest metal complexes with different ligands, charges and/or metal centres has been investigated. Various metal complexes including the negatively charged platinum complexes can interact with 1 in a 1:1 manner, which is in contrast to the commonly observed formation of insoluble platinum(II) double salts in a one-dimensional infinite chain such as the Magnus's green salt. Upon addition of guest molecules to 1 in CH 2Cl 2 solution, spectroscopic changes with new absorptions and emissions in the lower-energy region were observed as a result of significant metal-metal, π-π, and electrostatic interactions. 1H NMR titration and 2D NMR studies suggest that the host-guest interaction is predominantly in the sandwiched association mode of the molecular tweezers. This journal is © 2012 The Royal Society of Chemistry.
dc.description.nature	Link_to_subscribed_fulltext
dc.identifier.citation	Chemical Science, 2012, v. 3 n. 4, p. 1185-1191 [How to Cite?] DOI: http://dx.doi.org/10.1039/c2sc00935h
dc.identifier.doi	http://dx.doi.org/10.1039/c2sc00935h
dc.identifier.epage	1191
dc.identifier.hkuros	204726
dc.identifier.issn	2041-6520 2011 Impact Factor: 7.525
dc.identifier.issue	4
dc.identifier.scopus	eid_2-s2.0-84863419008
dc.identifier.spage	1185
dc.identifier.uri	http://hdl.handle.net/10722/159358
dc.identifier.volume	3
dc.language	eng
dc.publisher	Royal Society of Chemistry. The Journal's web site is located at http://www.rsc.org/publishing/journals/sc/About.asp
dc.publisher.place	United Kingdom
dc.relation.ispartof	Chemical Science
dc.subject	Alkynylplatinum
dc.subject	Building blockes
dc.subject	Complex 1
dc.subject	Double salts
dc.subject	Guest molecules
dc.title	Phosphorescent molecular tweezers based on alkynylplatinum(II) terpyridine system: turning on of NIR emission via heterologous Pt...M interactions (M = PtII, PdII, AuIII and AuI)
dc.type	Article

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The University of Hong Kong

Article: Phosphorescent molecular tweezers based on alkynylplatinum(II) terpyridine system: turning on of NIR emission via heterologous Pt...M interactions (M = PtII, PdII, AuIII and AuI)

The HKU Scholars Hub has contact details for these author(s).