CAS: Modified Cellulose Nanomaterials and their Electronic and Optical Properties

CAS：改性纤维素纳米材料及其电子和光学性能

• 批准号: 2004489
• 负责人: James Watkins
• 金额: $ 49.5万
• 依托单位: University of Massachusetts Amherst
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2020
• 资助国家: 美国
• 起止时间: 2020-08-01 至 2024-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2004489&HistoricalAwards=false
• 关键词: CAS; Modified; Cellulose; Nanomaterials; their

Non-Technical SummaryThe overall goal of this hypothesis-driven research proposal is to prepare cellulose nanomaterials that perform as advanced functional materials. This will be accomplished by utilizing existing feedstocks of nanocellulose, primarily cellulose nanocrystals (CNC), as a platform for the development of a new class of advanced functional nanomaterials. These nanomaterials represent a promising platform for the attachment of specially designed polymer chains to allow the transformation of simple, renewable, and abundant agricultural products into optically and electrically active components that can be used in advanced applications. The research goal entails the following: the researchers will (a) prepare and characterize CNC modified with semiconducting polymers, (b) process the new materials into thin films and gels and gain a detailed understanding of their morphology, (c) demonstrate the advanced properties of these new materials in light-emitting applications by fabricating and testing devices. The fundamental questions answered by this project are applicable to a community of scientists and engineers beyond those directly involved in the synthesis of semiconducting polymers, cellulose, devices and nanofabrication. Adaptation of cellulose nanomaterials as a feedstock in future products could reduce our reliance on ecologically “challenged” raw materials and boost US-based agriculture and biomass production. The project will provide research training and education of a graduate student who will be trained in new synthesis techniques, advanced characterization methods, and learn how to implement nanomaterials into actual industrial fabrication processes. Technical SummaryThe overall goal of this hypothesis-driven research proposal is to prepare cellulose nanomaterials that perform as advanced functional materials. This will be accomplished by utilizing existing feedstocks of nanocellulose, primarily cellulose nanocrystals (CNC), as a platform for the development of a new class of nanomaterials. These nanomaterials represent a promising platform for the attachment of semiconducting polymer moieties to allow the transformation of simple, renewable, and abundant hydrocarbons to optically and electrically active components that can be used in advanced applications. The goal will be accomplished through a project involving (a) preparation and characterization of CNC modified with semiconducting polymers, (b) processing the new materials into thin films and gels and gaining an understanding of their morphology, and (c) studying the advanced properties of these new materials for electroluminescence applications by fabricating and testing PLEO and LEEC devices. The project will provide research training and education of a graduate student and contribute to enhancing diversity and exploration of commercial potential for these new materials.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.

非技术总结该假设驱动的研究建议的总体目标是准备作为高级功能材料执行的纤维素纳米材料。这将通过利用现有的纳米纤维素，原代纤维素纳米晶体（CNC）作为开发新类别的高级功能性纳米材料的平台来实现。这些纳米材料代表了连接经过专门设计的聚合物链的前景平台，可将简单，可再生和丰富的农产品转换为可用于高级应用中的光学和电活动组件。研究目标具有以下条件：研究人员将（a）准备并表征通过半导体聚合物修饰的CNC，（b）将新材料处理成薄膜和凝胶，并详细了解其形态，（c）证明了这些新材料在制造和测试设备中发射和测试设备中这些新材料的先进特性。该项目回答的基本问题适用于直接参与半导体聚合物，纤维素，设备和纳米化制作的科学家和工程师社区。纤维素纳米材料作为未来产品的原料可以减少我们对生态“挑战”原材料的保留，并促进美国的农业和生物量生产。该项目将为研究生提供研究培训和教育，该研究生将接受新的合成技术，高级表征方法的培训，并学习如何将纳米材料实施到实际的工业制造过程中。技术总结该假设驱动的研究建议的总体目标是准备作为高级功能材料执行的纤维素纳米材料。这将通过利用现有的纳米纤维素，原代纤维素纳米晶体（CNC）作为开发新的纳米材料的平台来实现。这些纳米材料代表了连接半导体聚合物部分的前景平台，以允许将简单，可再生和丰富的碳氢化合物转换为可以在高级应用中使用的光学和电活动组件。该目标将通过涉及的项目来实现（a）通过半导体聚合物修饰的CNC的准备和表征，（b）将新材料处理成薄膜和凝胶，并了解其形态，以及（c）研究这些新材料的先进性能，用于通过制造和测试PLEO和LEEC设备来进行电致材料，以进行电致材料。该项目将为研究生提供研究培训和教育，并为增强这些新材料的多样性和商业潜力的探索做出贡献。该奖项反映了NSF的法定任务，并被认为是值得通过基金会的知识分子优点和更广泛影响的评估评估来支持的。

项目成果

Semiconducting Cellulose Nanocrystal-Polyfluorene Emissive Materials in Organic Light-Emitting Diodes

• DOI: 10.1021/acsapm.1c00489
• 发表时间: 2021-07
• 期刊: ACS Applied Polymer Materials
• 影响因子: 5
• 作者: Allen C. Chang;M. B. Messikh;Maximilian Kaiser-;K. Carter