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气/液界面上双萘菁夹心化合物有序超分子结构的组装 被引量:1

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摘要 研究了气/液界面上双(八-十二烷硫基)萘菁铒{Er[Nc(SC12H25)8]2}形成的Langmuir单层膜中的超分子结构. 表面压-面积(π-A)等温线表明该化合物形成了稳定的单层膜. 将其沉积在云母片上, 用原子力显微镜(AFM)进行观察, 表明分子形成了取向高度有序的结构, 聚集体特征长度在100 nm左右(有的长达300 nm), 宽为20-30 nm.用紫外-可见光谱、偏振紫外-可见光谱、小角X射线衍射等对 LB膜进行了研究, 发现分子大环平面与基片平面夹角为54°, 每层厚度为3.53 nm. 研究表明形成的超分子结构由4-6列以面对面堆积形成的柱状体构成.
出处 《中国科学(B辑)》 CAS CSCD 北大核心 2001年第5期433-437,共5页 Science in China(Series B)
基金 国家自然科学基金(批准号: 29701002) 山东省自然科学基金重点项目(批准号: Z99B02) 山东省优秀中青年科学家奖励基金 教育部优秀
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