Supramolecular Assembly of Perylene Bisimide with β-Cyclodextrin Grafts as a Solid-State Fluorescence Sensor for Vapor Detection
Supramolecular Assembly of Perylene Bisimide with β-Cyclodextrin Grafts as a Solid-State Fluorescence Sensor for Vapor Detection
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DOI：
10.1002/adfm.200900221
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发表时间：
2009-07-24
影响因子：
19
通讯作者：
Jiang, Bang-Ping
中科院分区：
文献类型：
--
作者：
Liu, Yu;Wang, Ke-Rang;Jiang, Bang-Ping
一种纳米级的超分子聚集体是由二萘嵌苯双酰亚胺桥连的双-（全甲基-β-环糊精）1通过π-π堆积相互作用构建的。通过紫外-可见光谱、荧光光谱和核磁共振氢谱研究了其在有机溶液和水溶液中的自组装行为。透射电子显微镜和扫描电子显微镜图像显示了1的1D纳米棒聚集体，其在交叉偏振器条件下是双折射的，并且如荧光显微镜图像中所描绘的那样具有强荧光。X射线粉末衍射测量表明，I形成了良好有序的晶体排列，具有4.02埃的π-π堆积距离。此外，利用聚偏氟乙烯（PVDF）膜包埋1进行了固态荧光传感研究，发现1作为一种新型的蒸气探测材料，可以探测多种挥发性有机化合物，特别是对有机胺具有很高的灵敏度。
A nanoscopic supramolecular aggregate is constructed from perylene bisimide-bridged bis-(permethyl-beta-cyclodextrins) 1 via pi-pi stacking interactions. Its self-assembly behavior in organic and aqueous solutions is investigated by UV-Vis, fluorescence, and (1)H NMR spectroscopy. Transmission electron microscopy and scanning electron microscopy images show the 1D nanorod aggregation of 1, which is birefringent under crossed polarizer conditions and strongly fluorescent as depicted in the fluorescence microscopy image. X-ray powder diffraction measurements indicate that I forms a well-ordered crystalline arrangement with a pi-pi stacking distance of 4.02 angstrom. Furthermore, the solid-state fluorescence sensing is explored by utilizing the poly(vinylidene fluoride) membrane-em bedded 1, giving that 1, as a novel vapor detecting material, can probe several kinds of volatile organic compounds and, especially, exhibits high sensitivity to organic amines.