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Research Initiation Award: Active Control of Amphiphilicity: In Situ Control of the Assembly of Redox-active Surfactants in Bulk Solution and at Interfaces

研究启动奖：两亲性的主动控制：本体溶液和界面中氧化还原活性表面活性剂组装的原位控制

基本信息

批准号：
9410147
负责人：
Nicholas Abbott
金额：
$ 10万
依托单位：
University of California-Davis
依托单位国家：
美国
项目类别：
Continuing Grant
财政年份：
1994
资助国家：
美国
起止时间：
1994-08-15 至 1997-07-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=9410147&HistoricalAwards=false
关键词：
Research Initiation Award Active Control

项目摘要

ABSTRACT CTS-9410147 Nicholas Abbott/U. Cal @ Davis Studies of water-soluble surfactant molecules have, in the past, largely concentrated on systems in which the amphiphilicity of each surfactant was fixed at the time of its synthesis; at fixed temperature, pressure and composition, the properties of systems containing these surfactants are invariant. The research proposed here moves to active control of amphiphilicity, and aims to explore molecular-level principles to change, in situ and reversibly, the amphiphilicity of molecules and thereby control the surfactant-based properties of solutions and interfaces. Amphiphiles with redox-active groups that change hydrophilicity with oxidation state will designed and synthesized. Electrochemical and photochemical techniques will be used to control, in situ, the oxidation states of redox-wettability, micellization, and macroscopic phase-behavior of their solutions. The proposed research aims to develop the capability to cycle, on time-scale of seconds, properties of aqueous surfactant solutions and to direct changes in amphiphilicity to specific regions of a solution or interface thereby creating spatial gradients in their surfactant-based properties. The fundamental relationships between the molecular structures of surfactants and their collective properties will be investigated.

摘要Nicholas Abbott/U。过去，对水溶性表面活性剂分子的研究主要集中在每一种表面活性剂的两亲性在其合成时是固定的体系上；在固定的温度、压力和组成下，含有这些表面活性剂的体系的性质是不变的。本文提出的研究转向主动控制两亲性，旨在探索分子水平上的原理，以原位和可逆地改变分子的两亲性，从而控制溶液和界面的表面活性剂性质。设计并合成了具有氧化活性基团的亲水性随氧化态变化的两亲化合物。电化学和光化学技术将用于原位控制其溶液的氧化还原润湿性、胶束化和宏观相行为的氧化态。拟议的研究旨在发展在秒的时间尺度上循环水表面活性剂溶液性质的能力，并将两亲性的变化直接改变到溶液或界面的特定区域，从而在其表面活性剂性质中产生空间梯度。研究表面活性剂的分子结构与它们的集体性质之间的基本关系。