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·赖斯大学（William Marsh Rice University）的AngelA.Martí和Matteo Pasquali教授得到了化学部的大分子，超分子和纳米化学（MSN）计划（MSN）计划，以制定化学策略，以控制结构并为纳米结构（尤其是Boron Nitride natride nananotubes）提供理想的性能。这是通过对表面的化学修饰，纳米管内的金属有机络合物的封装以及表面覆盖范围来实现的。硼氮具有独特的材料特性，包括良好的导热率，较大的带隙，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，可以为开发新的传感器，抗腐蚀涂层以及轻质和健壮的材料铺平道路。在进行拟议的研究过程中，将通过参与该项目对毕业生，本科生和高中生进行培训。特别强调通过机构计划和波多黎各在莱斯大学对少数群体的不足成员的宣传，例如路易斯·斯托克斯联盟（Louis Stokes Alliance of Mifor）少数群体的聚会。此外，该项目还包括与NASA Langley研究中心的合作以及一家初创公司BNNT LLC.BORON NINRIDE纳米结构的合作。该项目着重于氮化硼纳米管（BNNT）和其他BN纳米结构的化学修饰，以控制其组织并赋予潜在实用应用的财产。该目标是通过研究意外的功能化技术（例如Vilsmeier反应和重氮盐的照片分解）来实现的，以使BN纳米结构在轻度条件下官能化。功能化旨在调整BN纳米结构的表面特性，以修改表面能量和分散性和/或实现去角质。 BNNT将装有金属络合物和金属氧化物纳米颗粒以产生杂种结构，并允许调整BNNT和封装组的性质。这项研究还将通过尝试通过使用多种表面活性剂制剂来形成液晶阶段的尝试来解决BN纳米结构的组织和自组装。然后将使用小角度中子散射研究BNNT周围的表面活性剂的结构。预计将在本研究过程中实现基于BN纳米结构的新科学和技术进步和应用。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和更广泛影响的评估评估来支持的。