Observing the Kinetic Pathway of Nanotube Formation from Bolaamphiphiles by Time-Resolved Small-Angle X-ray Scattering
Observing the Kinetic Pathway of Nanotube Formation from Bolaamphiphiles by Time-Resolved Small-Angle X-ray Scattering
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通过时间分辨小角 X 射线散射观察 Bola 两亲物形成纳米管的动力学路径
DOI：
10.1021/acs.jpcb.9b01746
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发表时间：
2019
期刊：
影响因子：
--
通讯作者：
Sakurai Kazuo
中科院分区：
文献类型：
--
作者：
Takahashi Rintaro;Kawauchi Hiroki;Kameta Naohiro;Lee Ji Ha;Fujii Shota;Shimizu Toshimi;Sakurai Kazuo
我们研究了bola两亲物（由糖残基，烷基链和氨基组成）在溶液中形成单层纳米管的动力学。在这种bola两亲物中，通过改变溶剂条件发生从单体分散状态到纳米管的转变。这种转变是由快速混合与停流装置。从刚刚混合后，这个过渡过程中监测原位的时间分辨小角X射线散射。以这种方式，我们能够得到直接的结构信息作为时间的函数，在纳米管的形成。结果表明，盘状聚集体最初形成，然后生长并闭合以产生管状结构。
We investigated the formation kinetics of a single monolayer nanotube from bolaamphiphiles (consisting of a sugar residue, an alkyl chain, and an amino group) in solution. In this bolaamphiphile, a transition from a monomerically dispersed state to the nanotube takes place by changing the solvent condition. This transition was induced by fast mixing with a stopped-flow apparatus. From just after the mixing, this transition process was monitored in situ by time-resolved small-angle X-ray scattering. In this manner, we were able to derive the direct structural information as a function of time during the nanotube formation. The results revealed that disklike aggregates initially formed, which then grew and closed to produce a tubular structure.