Temperature of peptide ions generated by matrix-assisted laser desorption ionization and their dissociation kinetic parameters

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dc.contributor.authorJeong Hee Moon-
dc.contributor.authorS H Yoon-
dc.contributor.authorM S Kim-
dc.date.accessioned2017-04-19T09:13:41Z-
dc.date.available2017-04-19T09:13:41Z-
dc.date.issued2009-
dc.identifier.issn1520-6106-
dc.identifier.uri10.1021/jp810077eko
dc.identifier.urihttps://oak.kribb.re.kr/handle/201005/8927-
dc.description.abstractProduct ion yields in postsource decay and photodissociation at 193 and 266 nm were measured for some peptide ions without a basic amino acid residue ([Y6+ H]+, [F5 + H]+, and [YPFVEPI + H]+) generated by matrix-assisted laser desorption ionization (MALDI). Data indicated statistical nature for the dissociation processes. Assuming that peptide ions formed by MALDI are in thermal equilibrium at temperature T and that their dissociation rate constants are specified by the critical energy (E0) and entropy (ΔSN), a method based on kinetic analysis was devised to determine these parameters simultaneously. The matrix used was found to affect the effective temperature of peptide ions, 2,5-dihydroxybenzoic acid (400-430 K) < sinapinic acid (440 K) < α-cyano-4-hydroxycinnamic acid (460-510 K), in agreement with previous perceptions. E0 of around 0.6 eV and ΔSN of -24 eu were smaller than previous quantum chemical results for small model peptide ions.-
dc.publisherAmer Chem Soc-
dc.titleTemperature of peptide ions generated by matrix-assisted laser desorption ionization and their dissociation kinetic parameters-
dc.title.alternativeTemperature of peptide ions generated by matrix-assisted laser desorption ionization and their dissociation kinetic parameters-
dc.typeArticle-
dc.citation.titleJournal of Physical Chemistry B-
dc.citation.number7-
dc.citation.endPage2076-
dc.citation.startPage2071-
dc.citation.volume113-
dc.contributor.affiliatedAuthorJeong Hee Moon-
dc.contributor.alternativeName문정희-
dc.contributor.alternativeName윤소희-
dc.contributor.alternativeName김명수-
dc.identifier.bibliographicCitationJournal of Physical Chemistry B, vol. 113, no. 7, pp. 2071-2076-
dc.identifier.doi10.1021/jp810077e-
dc.description.journalClassY-
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Division of Bio Technology Innovation > Core Research Facility & Analysis Center > 1. Journal Articles
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