在这里,我们描述了一类新型半氟化二支化衍生物的合成、物理化学和初步药物评估:M 1 diH x F y. 这些化合物具有完全阻止通常与纳米乳液相关的奥斯特瓦尔德熟化的非凡能力。开发的合成是模块化的,允许在亲氟(氟链)、亲油(烷基间隔头)和亲水(极性头)域中轻松增加结构变化。此外,合成可以很容易地扩大规模,并且可以通过硅胶和氟硅胶柱色谱轻松获得高纯度的化合物,而无需使用 HPLC 或其他耗时的技术。胶束形成、临界聚集浓度 (CAC) 和乳液稳定性研究等表面特性证明了二支化半氟化表面活性剂 M 1 diH x F y的不同行为相对于单链半氟化类似物 M z F y。值得注意的是,新聚合物 M 1 diH 3 F 8在超过 1 年的时间里显着减缓了常用氟化麻醉剂七氟醚纳米乳液的成熟。在此期间,纳米液滴尺寸没有增加到超过 400 nm。这一结果非常有希望通过静脉内输送挥发性麻醉剂来诱导和维持全身麻
虽然高迁移率 p 型共轭聚合物已被广泛报道,但高迁移率 n 型共轭聚合物仍然很少见。在目前的工作中,我们设计了半氟化烷基侧链并将它们引入到基于萘二亚胺的聚合物(PNDIF-T2 和 PNDIF-TVT)中。我们发现这些侧链的强自组织通过形成由“主链晶体”和“侧链晶体”组成的超结构,在附着的聚合物主链中诱导了高度有序。这种现象被证明大大增强了沿主干方向的排序,由此产生的聚合物在场效应晶体管中表现出单极 n 通道传输,具有高达 6.50 cm(2) V(-1) s 的显着高电子迁移率值(-1) 并且具有 10(5) 的高开关电流比。
Synthesis, physicochemical characterization, and self-assembly of linear, dibranched, and miktoarm semifluorinated triphilic polymers
作者:William B. Tucker、Aaron M. McCoy、Samantha M. Fix、Melissa F. Stagg、Matt M. Murphy、Sandro Mecozzi
DOI:10.1002/pola.27394
日期:2014.12.1
Linear, dibranched, and miktoarm amphiphiles containing both hydrophobic and fluorophilic moieties were synthesized and characterized in an attempt to elucidate the relationship between semifluorinated amphiphile structure and aggregate behavior in aqueous solution. For the linear and dibranched amphiphiles, there was an exponential decrease in critical aggregation concentration (CMC) and a logarithmic
Indium-mediated radical addition of perfluoroalkyl iodide in water
作者:Toshiyuki Takagi、Toshiyuki Kanamori
DOI:10.1016/j.jfluchem.2011.03.001
日期:2011.6
Reaction of perfluoroalkyl groups with carbon–carbon unsaturated compounds using indium in water proceeded smoothly to provide the addition products in high yields.
A fluorinated oleic acid 1-Z containing a perfluorooctyl group and its analogues (E-isomer 1-E, alkyne type 2 and saturated type 3) were synthesized in good yields. In these syntheses, it was found that a key compound 5 could be converted to each of 1-Z, 1-E and 2. Furthermore, equilibrium spreading pressures of their monolayers at the air–water interface were measured in order to demonstrate how the
Highly fluorinated single-chained and/or double-chained phospholipids containing the perfluorooctyl group as the terminal segment of hydrophobic chains and a phosphocholine moiety as the hydrophilic headgroup were synthesized in order to investigate the effect of fluorinated segments on the stability of phospholipid monolayers formed at the air-water interface. Judging from the equilibrium spreading pressures (pi(e)s) Of their monolayers at the air-water interface, all of the fluorinated phospholipids formed more stable monolayers than the corresponding non-fluorinated counterparts. In addition, the fluorinated double-chained phosphatidylcholine containing C-C triple bond (monoyne group) formed stable and fluid vesicle membranes in water, although the single-chained phospholipids did not form vesicle membranes but micellar solutions under the present conditions. (c) 2006 Elsevier B.V. All rights reserved.