SYNTHESIS OF A FULLERENE[60] CRYPTATE AND SYSTEMATIC LANGMUIR-BLODGETT AND THIN-FILM INVESTIGATIONS OF AMPHIPHILIC FULLERENE DERIVATIVES

SYNTHESIS OF A FULLERENE[60] CRYPTATE AND SYSTEMATIC LANGMUIR-BLODGETT AND THIN-FILM INVESTIGATIONS OF AMPHIPHILIC FULLERENE DERIVATIVES
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富勒烯[60]穴状化合物的合成和系统朗缪尔-布洛杰特以及两亲性富勒烯衍生物的薄膜研究

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发表时间:
1995
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通讯作者:
Michael Walter
Michael Walter
中科院分区:
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文献类型:
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作者:
U. Jonas;F. Cardullo;P. Belik;F. Diederich;A. Gügel;E. Harth;A. Herrmann;L. Isaacs;K. Müllen;H. Ringsdorf;C. Thilgen;P. Uhlmann;A. Vasella;Christian A. A. Waldraff;Michael Walter

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描述了第一富勒烯穴状化合物7的合成,其中钠离子与共价连接至亚甲基富勒烯[60]的苯并[2.2.2]穴状配体结合。在一项系统研究中,研究了 7 以及多种其他具有极性官能团的共价富勒烯衍生物的两亲特性以及这些化合物在空气-水界面形成朗缪尔单分子层的能力。这些衍生物包括 C60 和亚甲基富勒烯的 Diels-Alder 加合物,其中四种是富勒烯 C-糖苷。水面上的薄膜通过表面压力与分子面积等温线、压缩和膨胀循环以及光学显微镜进行表征。采用紫外/可见光谱和小角 X 射线衍射 (SAXS) 对固体基底上的 LB 薄膜进行表征。影响铺展和单层特性的参数包括(a)极性,(b)疏水性与亲水性的平衡,(c)连接到富勒烯的极性基团的大小和体积,以及(d)这些基团中芳香族残基的存在。
The synthesis of the first fullerene cryptate 7 with a sodium ion bound to a benzo[2.2.2]cryptand covalently attached to a methanofullerene[60] is described. The amphiphilic properties of 7 as well as of a variety of other covalent fullerene derivatives with polar functional groups and the ability of these compounds to form Langmuir monolayers at the air-water interface were investigated in a systematic study. Among these derivatives are Diels-Alder adducts of C60 and methanofullerenes, four of which are fullerene C-glycosides. The films at the water surface were characterized by their surface pressure versus molecular area isotherms, compression and expansion cycles, and optical light microscopy. UV/Vis spectroscopy and small-angle X-ray diffraction (SAXS) were employed for LB film characterization on solid substrates. Parameters influencing the spreading and monolayer character include (a) polarity, (b) balance of hydrophobicity to hydrophilicity, (c) size and bulkiness of the polar groups attached to the fullerene, and (d) presence of aromatic residues in these groups.