CAREER: An Integrated Research and Education Plan for the Advancement of Surface Engineering via Thin Polymer Films

职业生涯：通过聚合物薄膜推进表面工程的综合研究和教育计划

• 批准号: 0449462
• 负责人: Joerg Lahann
• 金额: $ 45万
• 依托单位: Regents of the University of Michigan - Ann Arbor
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2005
• 资助国家: 美国
• 起止时间: 2005-04-01 至 2010-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0449462&HistoricalAwards=false
• 关键词: CAREER; Integrated; Research; Education; Plan

This project seeks (1) to expand the fundamental knowledge of polymer thin films, and (2) to broaden the educational awareness of surface engineering through the development of a cohesive curriculum that will expose students of various age groups to critical aspects of surface engineering. The proposed project combines preparative efforts, substrate design, and a thorough characterization approach in order to generate fundamentally new insights into poly-p-xylylene thin films and their structure-function relationships. Prior to the synthesis of functionalized polymer films via chemical vapor deposition (CVD) polymerization, a diverse library of [2.2]paracyclophanes will be prepared and the CVD polymerization process of such [2.2]paracyclophanes will be optimized to yield well-defined polymers. The resulting functionalized poly-p-xylylene films will be characterized with respect to their chemical, structural, mechanical, optical and transport properties. The project further includes fundamentally motivated studies on crystallization, chain mobility, and local plasticity in poly-p-xylylene films that exploit a range of analytical methods, such as ellipsometry, impedance spectroscopy, Brillouin light scattering, and hot stage atomic force microscopy.Intellectual merits: Based on the CVD polymerization of substituted [2.2]paracyclophanes, a library of molecularly diverse polymer films will be synthesized. These polymers all share the same polymer backbone, poly-p-xylylene, but differ in the chemical nature of their side groups and/or their side group density. Through a combination of preparative efforts, substrate design, and thorough characterization, fundamentally new insights into polymer thin films and their structure-function relationships will be generated. Because poly-p-xylylenes do not require the use of solvents, initiators, or plasticizers during polymerization and can be deposited as nanometer thin films in well-controlled manner, they comprise exceptional model systems for the systematic investigation of the effects of side group functionality and film structure on critical thin film properties. Broader impacts: The integrated research plan will promote the teaching, training and learning of the graduate and undergraduate students in the field of surface engineering. The PI has Undergraduate Research Opportunities Program (UROP) and Research Experience for Undergraduates (REU) students in his research group actively working on CVD polymerization. A cohesive educational plan will be developed to enhance the awareness of surface engineering among students of different age groups. Finally, the PI will develop a pre-college curriculum to promote students from underrepresented groups and to ensure diversity in science and engineering. The educational goals will be assessed through an evaluation design consisting of undergraduate and graduate course evaluations, faculty peer review, one-year follow-up via surveys, and periodic follow-up feedback from selected groups of participants to document long-term impact.

该项目旨在（1）扩大聚合物薄膜的基础知识，（2）通过开发一个有凝聚力的课程，使不同年龄组的学生接触表面工程的关键方面，扩大表面工程的教育意识。该项目结合了准备工作，基板设计和彻底的表征方法，以便从根本上对聚对二甲苯薄膜及其结构-功能关系产生新的见解。在通过化学气相沉积（CVD）聚合合成官能化聚合物膜之前，将制备[2.2]对环芳烷的不同库，并且将优化这种[2.2]对环芳烷的CVD聚合方法以产生明确定义的聚合物。所得的官能化聚对二甲苯膜的特征在于其化学，结构，机械，光学和传输性能。该项目进一步包括从根本上激发的研究结晶，链的流动性，并利用一系列的分析方法，如椭圆偏振，阻抗谱，布里渊光散射和热台原子力microscope.Intellectual merits的聚对二甲苯薄膜的局部可塑性：基于取代的[2.2]paracyclophanes的CVD聚合，分子多样性聚合物薄膜的库将被合成。这些聚合物都具有相同的聚合物主链聚对二甲苯，但它们的侧基的化学性质和/或它们的侧基密度不同。通过结合准备工作，基板设计和彻底的表征，从根本上对聚合物薄膜及其结构-功能关系的新见解将产生。由于聚对二甲苯在聚合过程中不需要使用溶剂、引发剂或增塑剂，并且可以以良好控制的方式沉积为纳米薄膜，因此它们包括用于系统研究侧基官能度和膜结构对临界薄膜性质的影响的特殊模型系统。更广泛的影响：综合研究计划将促进表面工程领域研究生和本科生的教学、培训和学习。PI拥有本科生研究机会计划（UROP）和本科生研究经验（REU）学生在他的研究小组积极从事CVD聚合。我们将制定一个有凝聚力的教育计划，以提高不同年龄组学生对表面工程的认识。最后，PI将开发大学预科课程，以促进来自代表性不足群体的学生，并确保科学和工程的多样性。教育目标将通过评估设计进行评估，包括本科和研究生课程评估，教师同行评议，通过调查进行为期一年的随访，以及选定参与者群体的定期随访反馈，以记录长期影响。