Structure of Dendrimers in Dilute Solution

Structure of Dendrimers in Dilute Solution
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稀溶液中树枝状聚合物的结构

DOI:
10.1007/3-540-44924-8_5
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发表时间:
2001
期刊:
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影响因子:
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通讯作者:
M. Ballauff
M. Ballauff
中科院分区:
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文献类型:
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作者:
M. Ballauff

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综述了树枝状大分子在稀溶液中的平衡结构。结果表明,小角中子散射(SANS)是合适的,以确定径向密度分布的树枝状结构内部。对于低代(4,5),可用数据表明密度分布在分子中心具有最大值。通过小角X射线散射(SAXS)研究的更高代显示出越来越紧凑的构象,这是由于周边基团的反折叠增加。在一般情况下,SANS被证明是一个非常合适的工具,在溶液中的树枝状聚合物和相关的超分子结构的调查。
The equilibrium structure of dendrimers in dilute solution is reviewed. It is shown that small-angle neutron scattering (SANS) is suitable to determine the radial density distribution inside of the dendritic structure. For low generations (4,5) available data indicate a density distribution that has its maximum in the center of the molecule. Higher generations studied by small-angle X-ray scattering (SAXS) exhibit a more and more compact conformation which is due to the increase back-folding of the peripheral groups. In general, SANS is shown to be a highly suitable tool for the investigation of dendrimers and related supramolecular structures in solution.