Chun, Myung-Suk 2024-01-20T14:02:50Z 2024-01-20T14:02:50Z 2021-09-05 2012-09 1226-119X https://pubs.kist.re.kr/handle/201004/128905 The confinement-induced conformational transitions of the polyelectrolyte chain are characterized with the coarse-grained Brownian dynamics simulations and the blob theory. Submicron-sized biopolymer xanthan is chosen as a model polyelectrolyte taking into account both flexible and semiflexible chains for comparison. Confined flexible and semiflexible chains exhibit a nonmonotonic variation in size in weak confinements, where the relative radius of gyration shows a dip and then increases when decreasing the channel width. The rigid chain, realized at low screening, exhibits a sigmoidal transition without minima in size. Major attention should be on the dependence of scaling law exponents on the screening effect of the solution in the moderate confinement of the de Gennes regime. Our findings are expected to provide useful information and new insight into the confined polyelectrolytes when relevant micro/nanochannels are designed and fabricated. English KOREAN SOC RHEOLOGY SINGLE DNA-MOLECULES BROWNIAN DYNAMICS CONFINEMENT Conformational transition of polyelectrolyte chains extending over the de Gennes regime in slitlike nanochannels Article 10.1007/s13367-012-0030-1 1 KOREA-AUSTRALIA RHEOLOGY JOURNAL, v.24, no.3, pp.249 - 253 KOREA-AUSTRALIA RHEOLOGY JOURNAL 24 3 249 253 scie scopus kci ART001696434 000309698100013 2-s2.0-84869066009 Mechanics Polymer Science Mechanics Polymer Science Article SINGLE DNA-MOLECULES BROWNIAN DYNAMICS CONFINEMENT polyelectrolyte conformation nanochannel de Gennes regime blob theory