Studying the chirality of polymerized 10,12-tricosadynoic acid LB films using SHG polarized angle dependence and SHG-CD method
Studying the chirality of polymerized 10,12-tricosadynoic acid LB films using SHG polarized angle dependence and SHG-CD method
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DOI：
10.1016/j.colsurfa.2005.11.044
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发表时间：
2006-08
期刊：
影响因子：
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通讯作者：
Gang Zou;T. Manaka;D. Taguchi;M. Iwamoto
中科院分区：
文献类型：
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作者：
Gang Zou;T. Manaka;D. Taguchi;M. Iwamoto
利用光学二次谐波（SHG）测量，研究了在石英衬底上聚合的10,12-三羧酸（PTDA）单层。通过SHG偏振角依赖性测量和二次谐波圆二色性（SHG- cd）测量来揭示PTDA单层的手性。结果表明，当亚相溶液中含有Cu（II）离子时，可形成手性PTDA膜，而当亚相溶液为纯水或含有Cd（II）离子时，不形成手性PTDA LB膜。聚二乙炔链在金属离子作用下的构象变化是最可能的原因。
Using optical second harmonic generation (SHG) measurements, polymerized 10,12-tricosadynoic acid (PTDA) monolayer on quartz substrate were investigated. SHG polarized angle dependence measurements and optical second harmonic generation circular dichroism (SHG-CD) measurements were carried out to reveal the chirality of PTDA monolayer. It was revealed that the chiral PTDA films were formed when subphase solution contains Cu(II) ions, while the chirality for PTDA LB films were not formed when subphase solution is pure water or contains Cd(II) ions. The conformational change of the polydiacetylene chain due to metal ions was found the most probable origin.