| 초록 |
A carborane is a cluster compound, particularly having a large amount of 10B atoms with the highest neutron capture cross section among all light elements. This unique property makes it a potential candidate for boron neutron capture therapy (BNCT). However, it has low water solubility for the BNCT application. Therefore, polyethylene glycol (PEG) was used to get carboranes the higher solubility by connecting with each other. This research used four different molecular weights of PEG (Mwt. 6000, 5010, 3800, 500). Its Langmuir-Blodgett (LB) films were investigated by using surface pressure area isotherm, atomic force microscope (AFM). The Isotherms show that carborane-PEG has different limiting area by the molecular weight. AFM images also show the close-packed arrangement for the higher concentration of PEG. Carborane-PEGs make small domains, ~ 0.011μm2 at the low pressure. As the surface pressure increases, the domains are aggregated and make larger domains, ~ 0.18μm2. |
