N-烷基-N-甲基吡咯烷鎓阳离子已用于离子液晶的设计,包括新型的含铀金属致发光剂。制备了与溴化物,双(三氟甲基磺酰基)酰亚胺,四氟硼酸根,六氟磷酸根,硫氰酸根,四(2-壬基三氟乙酰丙酮根)乙酸酯(III)和四溴呋喃基抗衡阴离子的吡咯烷鎓盐。对于溴化物盐和四溴呋喃基化合物,烷基C n H 2 n +1的链长从8到20个碳原子不等(n= 8,10–20)。这些化合物表现出丰富的介晶行为:观察到高度有序的近晶相(晶体近晶E相和罕见的晶体近晶T相),近晶A相和六方柱状相,具体取决于链长和阴离子。这项工作可以更好地洞悉晶体近晶T相的性质和形成,以及对这种高度有序相的外观的分子要求。在详细的粉末X射线衍射实验的基础上,并结合现有文献,对这种不常见的四方中间相进行了详尽的讨论。提出了用于近晶层内分子自组装的结构模型。另外,还研究了含有金属络合物阴离子的化合物的光物理性质。对于含铀的液晶元,可以通过将它们
Halogen-free pyrrolidinium bis(mandelato)borate ionic liquids: some physicochemical properties and lubrication performance as additives to polyethylene glycol
作者:Mamoun Taher、Faiz Ullah Shah、Andrei Filippov、Patrick de Baets、Sergei Glavatskih、Oleg N. Antzutkin
DOI:10.1039/c4ra02551b
日期:——
Friction coefficients for a pyrrolidinium orthoborate ionic liquid as 3 wt% additive in PEG, neat PEG and 5W40.
一种吡咯烷基正硼酸盐离子液体作为PEG中3 wt%添加剂、纯PEG和5W40中的摩擦系数。
Trivalent sulfonium compounds (TSCs): Tetrahydrothiophene-based amphiphiles exhibit similar antimicrobial activity to analogous ammonium-based amphiphiles
作者:Javier A. Feliciano、Austin J. Leitgeb、Cassandra L. Schrank、Ryan A. Allen、Kevin P.C. Minbiole、William M. Wuest、Robert G. Carden
DOI:10.1016/j.bmcl.2021.127809
日期:2021.4
of quaternary ammonium compounds (QACs) have focused on new structural motifs to increase bioactivity, but significantly less studied has been the change from ammonium- to sulfonium-based disinfectants. Herein, we report the synthesis of structurally analogous series of quaternary ammonium and trivalent sulfonium compounds (TSCs). The bioactivity profiles of these compounds generally mirror each other
作者:Karel Goossens、Kathleen Lava、Peter Nockemann、Kristof Van Hecke、Luc Van Meervelt、Kris Driesen、Christiane Görller-Walrand、Koen Binnemans、Thomas Cardinaels
DOI:10.1002/chem.200801566
日期:2009.1.5
and tetrabromouranyl compounds, the chain length of the alkyl group CnH2n+1 was varied from eight to twenty carbon atoms (n=8, 10–20). The compounds show rich mesomorphic behaviour: highly ordered smectic phases (the crystal smectic E phase and the uncommon crystal smectic T phase), smectic A phases, and hexagonal columnar phases were observed, depending on chain length and anion. This work gives better
N-烷基-N-甲基吡咯烷鎓阳离子已用于离子液晶的设计,包括新型的含铀金属致发光剂。制备了与溴化物,双(三氟甲基磺酰基)酰亚胺,四氟硼酸根,六氟磷酸根,硫氰酸根,四(2-壬基三氟乙酰丙酮根)乙酸酯(III)和四溴呋喃基抗衡阴离子的吡咯烷鎓盐。对于溴化物盐和四溴呋喃基化合物,烷基C n H 2 n +1的链长从8到20个碳原子不等(n= 8,10–20)。这些化合物表现出丰富的介晶行为:观察到高度有序的近晶相(晶体近晶E相和罕见的晶体近晶T相),近晶A相和六方柱状相,具体取决于链长和阴离子。这项工作可以更好地洞悉晶体近晶T相的性质和形成,以及对这种高度有序相的外观的分子要求。在详细的粉末X射线衍射实验的基础上,并结合现有文献,对这种不常见的四方中间相进行了详尽的讨论。提出了用于近晶层内分子自组装的结构模型。另外,还研究了含有金属络合物阴离子的化合物的光物理性质。对于含铀的液晶元,可以通过将它们