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Langmuir-Blodgett Monolayers of Carborane-Poly(ethylene glycol) Complexes

Title
Langmuir-Blodgett Monolayers of Carborane-Poly(ethylene glycol) Complexes
Other Titles
카보레인-폴리에틸렌글리콜 복합체들의 랭뮤어-블로젯 단분자막 특성 연구
Author
Kim, Sun Hye
Alternative Author(s)
김선혜
Advisor(s)
손대원
Issue Date
2017-08
Publisher
한양대학교
Degree
Master
Abstract
The carborane (CB) is a cluster composed of boron, carbon and hydrogen atoms. Having rich boron, CB has been recognized for its unique properties and its potential as a boron neutron capture therapy (BNCT) material. When using CB to BNCT, low water solubility is disadvantage. Solubility problem can be solved by connecting each CB with polyethylene glycol (PEG). This study used three different molecular weights of PEG (Mwt. 3800, 5010 and 6000). CB-PEG complexes at the air-water interface and Langmuir-Blodgett (LB) films of CB-PEG complexes were investigated by using surface pressure (Π)-surface area (A) isotherm, hysteresis and atomic force microscope (AFM). Surface pressure (Π)-surface area (A) isotherms show that CB-PEG complexes have different limiting area according to the molecular weight of PEG. The AFM images also show the close-packed arrangement for the higher molecular weights of PEG. CB-PEG complexes make dot domains at the low pressure. As the surface pressure increases, the domains are aggregated and make large domains. To investigate the effect of salt, 0.5 M NaCl solution was used as a subphase and used pressure (Π)-surface area (A) isotherm and hysteresis. As a result, there was no change at the low pressure and the surface area was increased as the pressure was increased.
URI
http://hdl.handle.net/20.500.11754/33723http://hanyang.dcollection.net/common/orgView/200000430992
Appears in Collections:
GRADUATE SCHOOL[S](대학원) > THEATER & FILM(연극영화학과) > Theses (Ph.D.)
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