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Synthesis and Characterization of Novel Hydrogel Formulations for the Single Chirality Purification of Single-Walled Carbon Nanotubes

用于单壁碳纳米管单手性纯化的新型水凝胶制剂的合成和表征

基本信息

批准号：
2107748
负责人：
Kevin Tvrdy
金额：
$ 25万
依托单位：
University of Colorado at Colorado Springs
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
2021
资助国家：
美国
起止时间：
2021-07-01 至 2025-06-30
项目状态：
未结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=2107748&HistoricalAwards=false
关键词：
Synthesis Characterization Novel Hydrogel Formulations

项目摘要

With the support of the Macromolecular, Supramolecular, and Nanochemistry Program and the Chemical Measurement and Imaging Program in the Division of Chemistry and the Interfacial Engineering Program in the Division of Chemical, Biochemical, Engineering and Transport Systems (CBET), Kevin Tvrdy of the University of Colorado at Colorado Springs is developing novel hydrogel separation media for optimizing the separation and purification of single-walled carbon nanotubes. The project explores the rational design of both relatively expensive hydrogel formulations, based on biologically derived polysaccharides, and relatively inexpensive hydrogel formulations, based on small molecule building blocks. The metric of success of this project is the degree of purity of the single chirality SWCNs that are isolated using the proposed hydrogel formulations. The availability of pure single component carbon nanotubes of uniform properties has the potential to significantly impact a wide range of applications, in nanoelectronics, biological imaging, photovoltaics and energy harvesting and storage. Master's level and undergraduate students will be involved in conducting the proposed research. Research results will be incorporated in a nanoscience course and shared with the general public in a monthly "Science on Tap" lecture series designed to promote science literacy and appreciation of science in the Colorado Springs community.In this project, Kevin Tvrdy and his students seek to develop hydrogel media specifically tailored for the chiral separation of single-walled carbon nanotubes (SWCNTs). Top-down modification of commercially-available Sephacryl hydrogels will be pursued, as well as bottom-up synthesis. Biologically derived polysaccharides will be crosslinked using radical polymerization to form novel hydrogel formulations, and a select group of water-soluble monomers and crosslinkers will be used to form alternative low-cost formulations. The hydrogel products will be characterized with spectroscopic and microscopic techniques, and their potential for SWCNTs separations based on chirality will be quantified. The metric of success of this project is the degree of purity of the single chirality SWCNTs that are isolated using the proposed hydrogel formulations. By focusing on the rational design of novel hydrogel media, this work seeks both fundamental knowledge of the chirality dependent physiochemical driving forces at the hydrogel/nanotube interface, and application of that knowledge to realize gel formulations tailored for isolation of specific nanotube chiralities. Achievement of the central goal of this project has the potential to impact how nanotubes are integrated into both fundamental and applied research.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

在化学系的大分子，超分子和纳米化学计划和化学测量和成像计划以及化学，生物化学，工程和运输系统（CBET）系的界面工程计划的支持下，位于科罗拉多斯普林斯的科罗拉多大学的Kevin Tvrdy正在开发新型水凝胶分离介质，用于优化单-壁碳纳米管该项目探索了基于生物衍生多糖的相对昂贵的水凝胶制剂和基于小分子构建块的相对便宜的水凝胶制剂的合理设计。该项目成功的衡量标准是使用所提出的水凝胶制剂分离的单手性SWCN的纯度。具有均匀特性的纯单组分碳纳米管的可用性有可能显著影响纳米电子学、生物成像、光化学和能量收集和存储中的广泛应用。硕士和本科生将参与进行拟议的研究。研究成果将被纳入纳米科学课程，并在每月的“Science on Tap”系列讲座中与公众分享，旨在促进科罗拉多斯普林斯社区的科学素养和科学欣赏。在这个项目中，Kevin Tvrdy和他的学生寻求开发专门用于单壁碳纳米管（SWCNT）手性分离的水凝胶介质。将对市售Sephacryl水凝胶进行自上而下的改性，以及自下而上的合成。生物来源的多糖将使用自由基聚合进行交联，形成新型水凝胶制剂，并且一组精选的水溶性单体和交联剂将用于形成替代的低成本制剂。水凝胶产品将与光谱和显微镜技术的特点，其潜在的单壁碳纳米管分离的基础上的手性将被量化。该项目成功的衡量标准是使用所提出的水凝胶制剂分离的单手性SWCNT的纯度。通过关注新型水凝胶介质的合理设计，这项工作寻求在水凝胶/纳米管界面的手性依赖的物理化学驱动力的基础知识，并应用该知识来实现为隔离特定纳米管手性而定制的凝胶制剂。该项目中心目标的实现有可能影响纳米管如何融入基础和应用研究。该奖项反映了NSF的法定使命，并通过使用基金会的知识价值和更广泛的影响审查标准进行评估，被认为值得支持。