Electroanalytical Applications of Organically Modified Sol-Gel Materials

这个教师早期职业发展（CAREER）项目，在分析和表面化学计划的支持下，旨在探索和表征有机改性溶胶-凝胶的形成，性质和应用。 这些混合无机-有机材料的独特性质仍有待充分利用。 将研究溶质被截留在这些材料中的机制以及对这一过程的控制。 循环伏安法（CV）与超微电极将被用来跟踪局部的物理和化学变化，发生在这些材料的表面上的烷氧基硅烷的水解和缩合。 CV和电致化学发光将用于表征在处理条件下截留在溶胶-凝胶基质中的小的带电氧化还原探针的流动性和可及性。 这个CAREER研究项目的实际结果将集中在电分析研究和电致发光传感器的制造的选择性渗透涂层的发展。 柯林森教授将联合收割机这些研究的推力与教育计划，其中包括在科学伦理的本科生和研究生课程的发展。 还计划对化学分析本科课程的实验室部分进行重大修订。 学生的兴趣是培养也采用更有创意和现实的样品进行分析，在这门课程中，特别注意法医和环境应用。 对溶胶-凝胶基质作为化学环境的特性的基本理解的发展是本职业研究计划的一个重要目标。 从长远来看，能够使用有机改性硅酸盐将这些基质定制为特定应用将具有战略影响。 在溶胶-凝胶干燥后产生的干凝胶具有其自身的有趣性质，这可能导致在电子、磁性、光学材料和衍生产品中的有用应用。 柯林森教授的目的是正式介绍当代科学伦理和科学行为的问题是及时的，这门课程将使学生在堪萨斯州立大学更清楚地了解这一主题。

This Faculty Early Career Development (CAREER) project, supported in the Analytical and Surface Chemistry Program, aims to explore and characterize the formation, properties and applications of organically modified sol-gels. The unique properties of these hybrid inorganic-organic materials remain to be exploited fully. The mechanism by which solutes become entrapped in these materials and the control of this process will be studied. Cyclic voltammetry (CV) with ultramicroelectrodes will be used to follow local physical and chemical changes that occur during hydrolysis and condensation of alkoxysilanes on the surfaces of these materials. CV and electrogenerated chemiluminescence will be used to characterize the mobility and accessibility of small charged redox probes entrapped in the sol-gel matrix under processing conditions. Practical results from this CAREER research project will focus on the development of permselective coatings for electroanalytical investigations and the fabrication of electrochemiluminscent sensors. Professor Collinson will combine these research thrusts with an educational plan that includes the development of a course in scientific ethics for both undergraduate and graduate students. A major revision of the laboratory component of an undergraduate course in chemical analysis is also planned. Student interest is to be cultivated by also employing more creative and realistic samples for analysis in this course with particular attention to forensic and environmental applications. The development of a fundamental understanding of the characteristics of the sol-gel matrix as an environment in which to do chemistry is an important objective of this CAREER research proposal. In the long term being able to tailor these matrices to a particular application using organically modified silicates will have strategic impact. The xerogels that are produced upon drying of sol-gels have interesting properties in their own right which could lead to useful applications in electronic, magnetic, optical materials and derived products. Professor Collinson's aim to introduce formally contemporary issues in scientific ethics and scientific conduct is timely, and this course will enable the students at Kansas State University to more clearly understand this topic.