DC Field | Value | Language |
---|---|---|
dc.contributor.author | Kim, K | - |
dc.contributor.author | Lee, JW | - |
dc.contributor.author | Chang, T | - |
dc.contributor.author | Kim, HI | - |
dc.date.accessioned | 2016-03-31T07:33:55Z | - |
dc.date.available | 2016-03-31T07:33:55Z | - |
dc.date.created | 2015-02-04 | - |
dc.date.issued | 2014-10 | - |
dc.identifier.issn | 1044-0305 | - |
dc.identifier.other | 2014-OAK-0000031882 | - |
dc.identifier.uri | https://oasis.postech.ac.kr/handle/2014.oak/13769 | - |
dc.description.abstract | We investigated the effect of stereoregularity on the gas-phase conformations of linear and cyclic polylactides (PLA) using electrospray ionization ion mobility mass spectrometry (ESI-IM-MS) combined with molecular dynamics simulations. IM-MS analysis of PLA ions shows intriguing difference between the collision cross section (Omega(D)) value of poly-L-lactide (PLLA) and poly-LD-lactide (PLDLA) ions with respect to their chain architecture and stereoregularity. In the singly sodiated linear PLA (l-PLAa (TM) Na+) case, both l-PLLA and l-PLDLA up to 11mer have very similar Omega(D) values, but the Omega(D) values of l-PLLA are greater than that of l-PLDLA ions for larger ions. In the case of cyclic PLA (c-PLA), c-PLLAa (TM) Na+ is more compact than c-PLDLAa (TM) Na+ for short PLA ions. However, c-PLLA exhibits larger Omega(D) value than c-PLDLA for PLA ions longer than 13mer. The origin of difference in the Omega(D) values was investigated using theoretical investigation of PLAs in the gas phase. The gas-phase conformation of PLA ions is influenced by Na+-oxygen coordination and the weak intramolecular hydrogen bond interaction, which are more effectively formed in more flexible chains. Therefore, the less flexible PLLA has a larger Omega(D) value than PLDLA. However, for short c-PLA, concomitant maximization of both Na+-oxygen coordination and hydrogen bond interaction is difficult due to the constricted chain freedom, which makes the Omega(D) value of PLAs in this range show a different trend compared with other PLA ions. Our study facilitates the understanding of correlation between stereoregularity of PLAs and their structure, providing potential utility of IM-MS to characterize stereoisomers of polymers. | - |
dc.description.statementofresponsibility | X | - |
dc.language | English | - |
dc.publisher | SPRINGER | - |
dc.relation.isPartOf | JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY | - |
dc.subject | Ion mobility | - |
dc.subject | Polylactide | - |
dc.subject | Chiral polymer | - |
dc.subject | Electrospray ionization | - |
dc.subject | GAS-PHASE CONFORMATIONS | - |
dc.subject | SYNTHETIC-POLYMERS | - |
dc.subject | POLY(LACTIC ACID) | - |
dc.subject | CROSS-SECTIONS | - |
dc.subject | IMS-MS | - |
dc.subject | OLIGOMERS | - |
dc.subject | SEPARATION | - |
dc.subject | PEPTIDES | - |
dc.subject | OLIGOSACCHARIDES | - |
dc.subject | COMPLEXES | - |
dc.title | Characterization of Polylactides with Different Stereoregularity Using Electrospray Ionization Ion Mobility Mass Spectrometry | - |
dc.type | Article | - |
dc.contributor.college | 첨단재료과학부 | - |
dc.identifier.doi | 10.1007/S13361-014-0949-1 | - |
dc.author.google | Kim, K | - |
dc.author.google | Lee, JW | - |
dc.author.google | Chang, T | - |
dc.author.google | Kim, HI | - |
dc.relation.volume | 25 | - |
dc.relation.issue | 10 | - |
dc.relation.startpage | 1771 | - |
dc.relation.lastpage | 1779 | - |
dc.contributor.id | 10652893 | - |
dc.relation.journal | JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY | - |
dc.relation.index | SCI급, SCOPUS 등재논문 | - |
dc.relation.sci | SCI | - |
dc.collections.name | Journal Papers | - |
dc.type.rims | ART | - |
dc.identifier.bibliographicCitation | JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY, v.25, no.10, pp.1771 - 1779 | - |
dc.identifier.wosid | 000342216200010 | - |
dc.date.tcdate | 2019-01-01 | - |
dc.citation.endPage | 1779 | - |
dc.citation.number | 10 | - |
dc.citation.startPage | 1771 | - |
dc.citation.title | JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY | - |
dc.citation.volume | 25 | - |
dc.contributor.affiliatedAuthor | Chang, T | - |
dc.contributor.affiliatedAuthor | Kim, HI | - |
dc.identifier.scopusid | 2-s2.0-84919949177 | - |
dc.description.journalClass | 1 | - |
dc.description.journalClass | 1 | - |
dc.description.wostc | 17 | - |
dc.description.scptc | 14 | * |
dc.date.scptcdate | 2018-05-121 | * |
dc.type.docType | Article | - |
dc.subject.keywordPlus | GAS-PHASE CONFORMATIONS | - |
dc.subject.keywordPlus | SYNTHETIC-POLYMERS | - |
dc.subject.keywordPlus | CROSS-SECTIONS | - |
dc.subject.keywordPlus | SEPARATION | - |
dc.subject.keywordPlus | OLIGOMERS | - |
dc.subject.keywordPlus | OLIGOSACCHARIDES | - |
dc.subject.keywordPlus | CHEMISTRY | - |
dc.subject.keywordPlus | PEPTIDES | - |
dc.subject.keywordPlus | DATABASE | - |
dc.subject.keywordPlus | ISOMERS | - |
dc.subject.keywordAuthor | Ion mobility | - |
dc.subject.keywordAuthor | Polylactide | - |
dc.subject.keywordAuthor | Chiral polymer | - |
dc.subject.keywordAuthor | Electrospray ionization | - |
dc.relation.journalWebOfScienceCategory | Biochemical Research Methods | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Analytical | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Physical | - |
dc.relation.journalWebOfScienceCategory | Spectroscopy | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Biochemistry & Molecular Biology | - |
dc.relation.journalResearchArea | Chemistry | - |
dc.relation.journalResearchArea | Spectroscopy | - |
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.
library@postech.ac.kr Tel: 054-279-2548
Copyrights © by 2017 Pohang University of Science ad Technology All right reserved.