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Article: Synthesis, characterization, spectroscopic, and electrochemiluminescence properties of a solvatochromic azacrown-containing cyanoruthenate(II): Potential applications in separation and indirect photometric detection of cations and amino acids in HPLC

TitleSynthesis, characterization, spectroscopic, and electrochemiluminescence properties of a solvatochromic azacrown-containing cyanoruthenate(II): Potential applications in separation and indirect photometric detection of cations and amino acids in HPLC
Authors
KeywordsElectrochemiluminescence
High-performance liquid chromatography
Photoluminescence
Ruthenium
Solvatochromism
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. 13, p. 3528-3537 How to Cite?
AbstractA new anionic ruthenium(II) complex, (Et4N)[Ru(tpyA18C6)(CN) 3] (tpyA18C6 = N-[4′-(2,2′:6′,2″-terpyridyl)] -1,4,7,10,13-pentaoxa-16-azacyclohexadodecane), has been synthesized and characterized. The complex was found to show pronounced solvatochromic behavior and, when dissolved in solution, changed its color from purple to yellow when the solvent system was varied from pure acetonitrile to pure water. Its absorption and emission energies in various solvents showed a linear dependence of the Gutman's acceptor number. The characteristic photoluminescence and electrochemiluminescence (ECL) of the complex were also found to be progres sively quenched as the proportion of water in a water/acetonitrile mixture increased. Large changes in the chemical shifts of the 1H NMR and 13C NMR signals of [Ru(tpyA18C6)(CN)3]- in different solvents were observed. The complex has also been demonstrated to serve as a mobile-phase additive in high-performance liquid chromatography for separation of metal cations and amino acids. Comparison studies with the crown-free analogue. (Et4N)[Ru-(tpy)(CN)3] (tpy = 2,2′:6′,2″-terpyridine), showed that other than the ion-pair effect, the allosteric host-guest interaction provided by the presence of the pendant crown was essential to the separation performance of the complex. Indirect detection of nonabsorbing analytes has been achieved by monitoring the absorbance changes of the eluent at the metal-to-ligand charge-transfer (MLCT) absorption band maximum of the complex at 445 nm. The effects of pH. ionic strength, and polarity of the mobile phase as well as the complex concentration on the selectivity and resolution have also been studied. © 2006 Wiley-VCH Verlag GmbH & Co. KGaA.
Persistent Identifierhttp://hdl.handle.net/10722/69419
ISSN
2015 Impact Factor: 5.771
2015 SCImago Journal Rankings: 2.323
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorLi, MJen_HK
dc.contributor.authorChu, BWKen_HK
dc.contributor.authorYam, VWWen_HK
dc.date.accessioned2010-09-06T06:13:29Z-
dc.date.available2010-09-06T06:13:29Z-
dc.date.issued2006en_HK
dc.identifier.citationChemistry - A European Journal, 2006, v. 12 n. 13, p. 3528-3537en_HK
dc.identifier.issn0947-6539en_HK
dc.identifier.urihttp://hdl.handle.net/10722/69419-
dc.description.abstractA new anionic ruthenium(II) complex, (Et4N)[Ru(tpyA18C6)(CN) 3] (tpyA18C6 = N-[4′-(2,2′:6′,2″-terpyridyl)] -1,4,7,10,13-pentaoxa-16-azacyclohexadodecane), has been synthesized and characterized. The complex was found to show pronounced solvatochromic behavior and, when dissolved in solution, changed its color from purple to yellow when the solvent system was varied from pure acetonitrile to pure water. Its absorption and emission energies in various solvents showed a linear dependence of the Gutman's acceptor number. The characteristic photoluminescence and electrochemiluminescence (ECL) of the complex were also found to be progres sively quenched as the proportion of water in a water/acetonitrile mixture increased. Large changes in the chemical shifts of the 1H NMR and 13C NMR signals of [Ru(tpyA18C6)(CN)3]- in different solvents were observed. The complex has also been demonstrated to serve as a mobile-phase additive in high-performance liquid chromatography for separation of metal cations and amino acids. Comparison studies with the crown-free analogue. (Et4N)[Ru-(tpy)(CN)3] (tpy = 2,2′:6′,2″-terpyridine), showed that other than the ion-pair effect, the allosteric host-guest interaction provided by the presence of the pendant crown was essential to the separation performance of the complex. Indirect detection of nonabsorbing analytes has been achieved by monitoring the absorbance changes of the eluent at the metal-to-ligand charge-transfer (MLCT) absorption band maximum of the complex at 445 nm. The effects of pH. ionic strength, and polarity of the mobile phase as well as the complex concentration on the selectivity and resolution have also been studied. © 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.subjectElectrochemiluminescenceen_HK
dc.subjectHigh-performance liquid chromatographyen_HK
dc.subjectPhotoluminescenceen_HK
dc.subjectRutheniumen_HK
dc.subjectSolvatochromismen_HK
dc.titleSynthesis, characterization, spectroscopic, and electrochemiluminescence properties of a solvatochromic azacrown-containing cyanoruthenate(II): Potential applications in separation and indirect photometric detection of cations and amino acids in HPLCen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0947-6539&volume=12&issue=13&spage=3528&epage=3537&date=2006&atitle=Synthesis,+characterization,+spectroscopic,+and+electrochemiluminescence+properties+of+a+solvatochromic+azacrown-containing+cyanoruthenate(II):+potential+applications+in+separation+and+indirect+photometric+detection+of+cations+and+amino+acids+in+HPLCen_HK
dc.identifier.emailYam, VWW:wwyam@hku.hken_HK
dc.identifier.authorityYam, VWW=rp00822en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1002/chem.200501240en_HK
dc.identifier.pmid16521135-
dc.identifier.scopuseid_2-s2.0-33646193157en_HK
dc.identifier.hkuros138229en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-33646193157&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume12en_HK
dc.identifier.issue13en_HK
dc.identifier.spage3528en_HK
dc.identifier.epage3537en_HK
dc.identifier.isiWOS:000237177800010-
dc.publisher.placeGermanyen_HK
dc.identifier.scopusauthoridLi, MJ=13105838700en_HK
dc.identifier.scopusauthoridChu, BWK=35209639800en_HK
dc.identifier.scopusauthoridYam, VWW=18539304700en_HK

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