...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>The journal of physical chemistry, B. Condensed matter, materials, surfaces, interfaces & biophysical >Orientational Tuning of Monolayers of Amphiphilic Ruthenium(II) Complexes for Optimizing Chirality Distinction Capability
【24h】

Orientational Tuning of Monolayers of Amphiphilic Ruthenium(II) Complexes for Optimizing Chirality Distinction Capability

机译：两性钌（II）配合物单层的取向优化以优化手性区分能力。

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The following six types of Ru(II) complexes were synthesized with an aim to develop a monolayer with chiral discrimination:1 [Ru(bpy)_2(4-C 1 lbpy)](ClO_4)_2 (bpy = 2,2/-bipyridine,4-C1 1bpy= 4-methyl-4'-undecyl-2,2/-bipyridine);2 [Ru(bpy)_2(4,4/-dCl lbpy)](ClO_4)_2 (4,4'-dCl Ibpy = 4,4/-diundecyl-2,2/ -bipyridine);3 [Ru(bpy)_2(5-Cl lbpy)](ClO_4)_2 (5-C1 lbpy= 5-methyl-5'-imdecyl-2,2'-bipyridine);4 [Ru(bpy)_2(5,5'-dCl1bpy)]-(C1O_4)_2 (5,5'-dCllbpy = 5,5'-diundecyl-2,2'-bipyridine);5 [Ru(bpy)_2(4-C18bpy)](ClO_4)_2 (4-C18bpy= 4-methyl-4'-octadecyl-2,2'-bipyridine);6 [Ru(bpy)_2(4,4/-dC18bpy)](ClO_4)_2 (4,4/-dCl1bpy = 4,4'-dioctadecyl-2,2/-bipyridine).These complexes possess one or two alkyl chains at 4,4'- or 5,5'-positions of the 2,2/-bipyridine ligand.A traditional amphiphile is a linear molecule with a polar head attached by one or two alkyl chains,whereas the present complexes cover both traditional (1,2,5,and 6) and nontraditional amphiphilic molecules (3 and 4).The monolayer behavior of these Ru(II) complexes on a subphase of 0.1 M NaClO_4 aqueous solution was compared using surface pressure-molecular area (pi-A) isotherm measurements and Brewster angle microscopy (BAM) observations.The vertical structure of monolayers deposited onto a silicon substrate was characterized with X-ray reflectivity (XRR) measurements.Chirality effects were investigated using two procedures:one was to compare the pi-A isotherms between a racemic mixture and a pure enantiomer and the other to observe the effect of chiral anions in the subphase.As a result,complex 4 ([Ru(bpy)_2(5,5/-dCllbpy)](ClO_4)_2),belonging to the nontraditional group,was the only molecule with a distinct chirality discrimination capability toward the chiral anion,bis[(+)-tartrato][diantimonato(III)]dipotassium,K_2[Sb_2(+)-(C_4H_2O_6)_2].The observed chiral distinction of this molecule was interpreted in terms of a preferential orientation of the polar head with respect to the aqueous phase.
机译：合成了以下六种类型的Ru（II）络合物，目的是开发具有手性识别能力的单分子层：1 [Ru（bpy）_2（4-C 1 lbpy）]（ClO_4）_2（bpy = 2,2 /-联吡啶，4-C1 1bpy = 4-甲基-4'-十一烷基-2,2 /-联吡啶）; 2 [Ru（bpy）_2（4,4 / -dCl lbpy）]（ClO_4）_2（4,4' -dCl Ibpy = 4,4 /-二十一烷基-2,2 /--联吡啶）; 3 [Ru（bpy）_2（5-Cl lbpy）]（ClO_4）_2（5-C1 lbpy = 5-甲基-5'-癸基-2,2'-联吡啶）; 4 [Ru（bpy）_2（5,5'-dCl1bpy）]-（C1O_4）_2（5,5'-dCllbpy = 5,5'-二十一烷基-2,2' -联吡啶）; 5 [Ru（bpy）_2（4-C18bpy）]（ClO_4）_2（4-C18bpy = 4-甲基-4'-十八烷基-2,2'-联吡啶）; 6 [Ru（bpy）_2 （4,4 / -dC18bpy）]（ClO_4）_2（4,4 / -dCl1bpy = 4,4'-dioctadecyl-2,2 / -bipyridine）。这些配合物在4,4'-具有一个或两个烷基链传统的两亲物是线性分子，其极性头由一个或两个烷基链连接，而本发明的络合物涵盖了传统的（1,2,5，和6）和非传统的两亲分子（3和4）。使用表面压力-分子面积（pi-A）等温线测量和Brewster角显微镜（BAM）观察结果比较了0.1 M NaClO_4水溶液亚相中的这些Ru（II）配合物的r。单层垂直沉积在硅上的结构通过X射线反射率（XRR）测量对底物进行表征。采用两种方法研究了杂色性：一种是比较外消旋混合物和纯对映体之间的pi-A等温线，另一种是观察手性阴离子在消旋混合物中的作用。结果，属于非传统基团的络合物4（[Ru（bpy）_2（5,5 / -dCllbpy）]（ClO_4）_2）是唯一对手性阴离子具有明显手性鉴别能力的分子，双[（+）-酒石] [双苯二胺（III）]双钾，K_2 [Sb_2（+）-（C_4H_2O_6）_2]。关于水相。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号