Functionalization, Supramolecular Encapsulation, and Order in Boron-Nitride Nanostructures

氮化硼纳米结构的功能化、超分子封装和有序

基本信息

批准号：
2108838
负责人：
Angel Marti
金额：
$ 47.64万
依托单位：
William Marsh Rice University
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：
2021-11-01 至 2024-10-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=2108838&HistoricalAwards=false
关键词：
Functionalization Supramolecular Encapsulation Order Boron

项目摘要

Professors Angel A. Martí and Matteo Pasquali of William Marsh Rice University are supported by the Macromolecular, Supramolecular and Nanochemistry (MSN) Program in the Division of Chemistry to develop chemical strategies to control the structure and to impart desirable properties to nanostructures, particularly boron nitride nanotubes. This is to be accomplished through chemical modification of the surface, encapsulation of metal-organic complexes within the nanotubes and surface coverage with surfactants. Boron-nitrides possess a unique set of material properties that include good thermal conductivity, a large band gap, chemical inertness, and high tensile strength. Better understanding of these unique nanostructures and their properties could pave the way for the development of new sensors, anti-corrosive coatings, and light and robust materials for a wide range of applications. In the course of conducting the proposed research, graduate, undergraduate and high school students will be trained through participation in the project. Particular emphasis is on outreach toward members of underrepresented minorities at Rice University through institutional programs and in Puerto Rico through programs such as the Louis Stokes Alliance for Minority Participation. In addition, the project includes collaboration with NASA Langley Research Center and a startup company, BNNT LLC.Boron nitride nanostructures are known to be inert and extremely stable and resistant to chemical manipulation. This project focuses on the chemical modification of boron nitride nanotubes (BNNTs) and other BN nanostructures in an effort to control their organization and impart properties for potential practical applications. This goal is to be achieved by studying unexplored functionalization techniques such as the Vilsmeier reaction and the photo-decomposition of diazonium salts to functionalize BN nanostructures under mild conditions. Functionalization is designed to tune the surface properties of the BN nanostructures to modify the surface energy and dispersibility and/or achieve exfoliation. The BNNTs will be loaded with metal complexes and metal oxide nanoparticles to produce hybrid structures, and allow for the tuning of the properties of BNNTs and the encapsulated group. This research will also address the organization and self-assembly of BN nanostructures through attempts to form liquid crystalline phases by utilizing a number of surfactant preparations. The structure of the surfactants around the BNNTs will then be investigated using small angle neutron scattering. New scientific and technological advances and applications based on BN nanostructures are expected to be realized in the course of this 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.

威廉·马什·莱斯大学的 Angel A. Martí 和 Matteo Pasquali 教授得到化学系高分子、超分子和纳米化学 (MSN) 项目的支持，开发化学策略来控制结构并赋予纳米结构（特别是氮化硼）所需的特性这是通过表面化学改性、将金属有机复合物封装在纳米管内以及用表面活性剂覆盖表面来实现的。氮化硼具有一系列独特的材料特性，包括良好的导热性、大带隙、化学惰性和高拉伸强度，更好地了解这些独特的纳米结构及其特性可以为新型传感器、反渗透传感器的开发铺平道路。 -适用于广泛应用的腐蚀性涂料和轻质坚固材料在进行拟议研究的过程中，研究生、本科生和高中生将通过参与该项目受到特别重视。少数民族在莱斯大学通过机构项目，在波多黎各通过路易斯斯托克斯少数民族参与联盟等项目。此外，该项目还包括与 NASA 兰利研究中心和一家初创公司 BNNT LLC 的合作。众所周知，氮化硼纳米结构是惰性的。该项目重点研究氮化硼纳米管 (BNNT) 和其他 BN 纳米结构的化学改性，以控制其组织并赋予潜在实际应用的特性。目标是通过研究未开发的功能化技术来实现，例如 Vilsmeier 反应和重氮盐的光分解，以在温和条件下功能化 BN 纳米结构。功能化旨在调整 BN 纳米结构的表面特性，以改变表面能和分散性。 BNNT 将负载金属络合物和金属氧化物纳米颗粒以产生混合结构，并允许调整其性能。 BNNT 和封装基团还将通过尝试利用多种表面活性剂制剂形成液晶相来解决 BN 纳米结构的组织和自组装问题，然后使用小角度研究 BNNT 周围的表面活性剂的结构。中子散射。基于 BN 纳米结构的新科学和先进技术和应用有望在这项研究过程中实现。该奖项反映了 NSF 的法定使命，并被认为值得通过支持使用基金会的智力价值和更广泛的影响审查标准进行评估。