CAJ | 학술논문

对不同链长的2-烷基-苯并咪唑衍生物(BzCn,烷基链长从C5到C15)在硝酸银亚相上的成膜行为及形成的LB膜的结构进行了研究.表面压-面积曲线的结果表明,短链(C5～C9)的2-烷基-苯并咪唑可在银离子亚相上形成稳定的单分子膜,而长链(C13和C15)衍生物则形成多层膜.利用LB技术可将上述Langmuir膜转移到固体基板上形成LB膜,其吸收光谱的结果说明了苯并咪唑和银离子配位.利用AFM、XRD及FT-IR等技术研究了烷基链长对LB膜结构的影响.实验结果表明,除了BzC15,其余的衍生物都可形成规整的层状结构.短链衍生物的单层LB膜具有均一、平整的形貌;而对于BzC15,观察到多层结构.
대불동련장적2-완기-분병미서연생물(BzCn,완기련장종C5도C15)재초산은아상상적성막행위급형성적LB막적결구진행료연구.표면압-면적곡선적결과표명,단련(C5～C9)적2-완기-분병미서가재은리자아상상형성은정적단분자막,이장련(C13화C15)연생물칙형성다층막.이용LB기술가장상술Langmuir막전이도고체기판상형성LB막,기흡수광보적결과설명료분병미서화은리자배위.이용AFM、XRD급FT-IR등기술연구료완기련장대LB막결구적영향.실험결과표명,제료BzC15,기여적연생물도가형성규정적층상결구.단련연생물적단층LB막구유균일、평정적형모;이대우BzC15,관찰도다층결구.
The formation of stable Langmuir films on the aqueous AgNO3 subphase of 2-alkyl benzimidazoles (BzC n) with various chain lengths (from C5 to C15) and the layer structures of the transferred films were described. From the surface pressure-area isotherm, it has been found that the true monolayer could be formed for the short chain derivatives, while multilayer structures for the long ones. All of the Langmuir films could be transferred to solid substrate. The measurement of the UV spectra of the transferred LB films confirmed the coordination between benzimidazole group and Ag(Ⅰ) ion in the Langmuir films. The effect of the length of alkyl chains on the structure of the transferred LB films was revealed by application of atomic force microscopy, FT-IR spectra and X-ray diffraction (XRD) measurement. It showed that except for BzC15, a regular layer structure was formed. Characterization of the morphology points to the formation of the neat LB film for the short derivatives and multilayer structure for BzC15.