Equilibrium phases of polyelectrolytes in ionic solutions이온 용액에서 고분자 전해질의 평형상

Cited 0 time in webofscience Cited 0 time in scopus
  • Hit : 241
  • Download : 0
Polyelectrolytes are the charged polymers in ionic solutions, such as microtubules, filamentous actins, and DNA. Polyelectrolytes are highly charged but they can form the condensed phases in equilibrium, which means the can attract each other overcoming the electrostatic repulsion. It is our ultimate goal to understand the like-charge attraction. A clue of this question is the presence of oppositely charged mobile ions, namely \textit{counterions} dissolved from polyelectrolytes in ionic solutions. Counterions are expected to screen the bare repulsion of polyelectrolytes, so the distribution of counterions near polyelectrolytes can affect the interaction between polyelectrolytes and then understating on the counterion distribution is the first step to figure out the like-charge attraction. The examples of counterions are spermidine and spermine known as the effective agents for DNA condensation. They are multivalent ions and have extended rodlike structure with well-separated charge distributions along the backbone. Under the observation, we suppose that the valence and the internal structure of counteirons can play a crucial role in the interaction between polyelectrolytes. Thus, we conduct the research on the equilibrium phases of polyelectrolytes in ionic solutions with respect to the electrostatic strength and the internal structure of counterions. Furthermore, we take the presence of salt ions into account when examining the like-charge attraction in order to consider the physiological situation surrounded by counterions as well as salt ions from the electrolyte solution.
Advisors
Kim, Yong Woonresearcher김용운researcher
Description
한국과학기술원 :물리학과,
Publisher
한국과학기술원
Issue Date
2020
Identifier
325007
Language
eng
Description

학위논문(박사) - 한국과학기술원 : 물리학과, 2020.2,[x, 100 p. :]

Keywords

polyelectrolytes▼acounterion▼asalt▼acounterion condensation transition▼arodlike structure▼ainteraction between polyelectrolytes▼afield theory▼aMonte Carlo simulation; 고분자전해질▼a반대이온▼a염▼a상전이▼a막대형 구조▼a고분자전해질 사이의 상호작용▼a장이론▼a몬테카를로 시뮬레이션

URI
http://hdl.handle.net/10203/283599
Link
http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=908073&flag=dissertation
Appears in Collection
PH-Theses_Ph.D.(박사논문)
Files in This Item
There are no files associated with this item.

qr_code

  • mendeley

    citeulike


rss_1.0 rss_2.0 atom_1.0