摘要
合成了8,10-二炔廿五碳酸,在玻璃片、石英片和镀金片上沉积了它的LB膜,X-射线衍射研究了LB膜的周期结构和聚合对它的影响。在2θ=1°—15°范围内观察到了多达7个布拉格衍射峰。由此计算了等同周期和分子在基片上的倾斜角。用分子模型计算了衍射峰强度,得到了与实验结果相符合的衍射峰强度奇偶起伏现象。
Pentacosdiyne-8,10 acid-1 has been synthesized and deposited by LB techniques onto glass, quartz and gold-covered glass slides. X-ray diffraction has been used to investigate the periodic structure of the film and effect of polymerization on the structure. Seven Bragg peaks were observed in the 26 angle range of1°-15′. From this point, the spacings of the LB film and the angle of molecular orientation on the substrate were calculated. A model was employed to calculate the diffraction intensity which was in good agreement with the experimental phenomenon of even-odd intensity oscillation.
出处
《高分子学报》
SCIE
CAS
CSCD
北大核心
1990年第1期87-92,共6页
Acta Polymerica Sinica
基金
国家自然科学基金资助的课题
中国科学技术大学结构成分中心开放实验室部分资助
关键词
二炔廿五碳酸
LB膜
周期结构
Pentacosdiyne-8, 10 acid 1, LB film, X-ray diffraction, Periodic structure, Even-odd intensity oscillation
