CAREER: Directed Self-Assembly of 2D Plasmonic Nanoparticles in Block Copolymer Nanofibers to Form Hierarchical Nanostructures

职业：嵌段共聚物纳米纤维中二维等离子体纳米颗粒的定向自组装形成分层纳米结构

基本信息

批准号：
1752611
负责人：
Guoliang Greg Liu
金额：
$ 58.5万
依托单位：
Virginia Polytechnic Institute and State University
依托单位国家：
美国
项目类别：
Continuing Grant
财政年份：
2018
资助国家：
美国
起止时间：
2018-03-01 至 2024-08-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=1752611&HistoricalAwards=false
关键词：
CAREER Directed Self Assembly 2D

项目摘要

PART 1: NON-TECHNICAL SUMMARYPolymers containing two-dimensional (2D) plasmonic nanoparticles could contribute to transformative technologies such as waveguides, photovoltaics, sensors, actuators, and photo-responsive adhesives. This CAREER project addresses the fundamental issue of designing the interface between polymers and 2D plasmonic nanoparticles. The solutions to this issue will lay the foundation for integrating 2D plasmonic nanoparticles into polymeric materials and creating hybrid functional composites with advanced optical, photo-thermal, and plasmonic properties. In particular, fibers and filaments of polymers with hierarchically stacked 2D plasmonic nanoparticles can be used as inks for additive manufacturing of plasmonic functional constructs. The hybrid material can help design photovoltaics with superior power conversion efficiencies, as well as other functional devices in energy and environmental sciences that are of industrial and societal importance.The educational impacts involve the training of underrepresented and first-generation college students in Appalachia. In particular, a mini summer research camp for underrepresented students from neighboring Historically Black Colleges and Universities (HBCUs)will be developed, and the PI will serve as a senior fellow in the university's Residential College to promote STEM and improve the success rate of underrepresented and first-generation college students. In this way, the effort presented here will train underrepresented local youth, especially first-generation college students in isolated Appalachia, to become future polymer scientists and engineers who will build and reshape the regional polymer industries.PART 2: TECHNICAL SUMMARYFibers possess attractive properties that thin films and bulk samples lack, for instance, large surface area, low density, high strength, and peripherally confined self-assembly. The goal of the proposed project is to exploit electrospinning and block copolymer directed self-assembly to create hierarchical structures of block copolymers and 2D plasmonic nanoparticles in fibers, which have fascinating structural and photo-thermal properties. The main scopes are to understand the mechanism of polymer brush formation on 2D plasmonic nanoparticles and design tailored polymer/nanoparticle interfaces for creating hierarchical nanostructures in fibers. The central hypothesis states that, by exploiting the unique plasmonic properties of 2D plasmonic nanoparticles, the polymer brush formation mechanism will be discovered, block copolymer/2D plasmonic nanoparticle interface for hierarchical directed self-assembly in fibers will be prepared, and structural and photothermal properties that are distinctive features of plasmonic polymers will be understood. The proposed goal will be realized via three main tasks: 1) employ 2D plasmonic nanoparticles to unveil the mechanism of polymer brush formation, 2) utilize block copolymers to direct the self-assembly of 2D plasmonic nanoparticles and form hierarchical structures in fibers, 3) understand the domain spacing and photothermal properties of block copolymers upon mixing with 2D plasmonic nanoparticles. The block copolymers are expected to exhibit preferred domain orientation in the fibers, and the 2D nanoparticles to form stacked layers with monolayers of 2D nanoparticles in each block copolymer domain. The hierarchical nanostructures will bestow on polymers novel plasmonic properties and be active candidates for applications in waveguides, photovoltaics, adhesives, and 3D printing inks.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.

第1部分：含有二维（2D）等离子体纳米颗粒的非技术摘要聚合物可能有助于变革性技术，例如波导，光伏，传感器，执行器和光子响应性粘合剂。该职业项目解决了设计聚合物与2D等离子体纳米颗粒之间的界面的基本问题。该问题的解决方案将为将2D等离子体纳米颗粒整合到聚合物材料中，并创建具有先进光学，光热和等离激子特性的混合功能复合材料。特别是，具有层次堆叠的2D等离子体纳米颗粒的聚合物的纤维和细丝可以用作等离激元功能构建体的墨水。混合材料可以帮助设计具有卓越的功率转换效率的光伏技术，以及具有工业和社会重要性的能源和环境科学方面的其他功能设备。教育影响涉及对阿巴拉契亚州代表性不足和第一代大学学生的培训。特别是，将开发一个小型夏季研究营，该夏季研究营为来自邻近历史上黑人学院（HBCUS）的代表性不足的学生（HBCUS）开发，PI将担任该大学住宅学院的高级研究员，以促进STEM并提高代表性不足和第一代大学生的成功率。这样，这里提出的努力将培训代表性不足的当地年轻人，尤其是在阿巴拉契亚孤立的第一代大学生，成为未来的聚合物科学家和工程师，他们将建立和重塑区域聚合物行业。第2部分：技术摘要，具有较薄的薄膜和大量样品的诱人性属性，例如，薄层和大量的样本缺乏，例如，高度高度，高度，高度高度，高度，高度高度，并且是高度高度的，并且是高度高度的。拟议项目的目的是利用静电纺丝和阻断共聚物的定向自组装，以在纤维中创建块共聚物和2D等离子体纳米颗粒的分层结构，这些结构和光热性质具有迷人的结构和光感。主要范围是了解2D等离子体纳米颗粒上聚合物刷形成的机理，并设计量身定制的聚合物/纳米颗粒接口，用于在纤维中创建层次纳米结构。中心假设指出，通过利用2D等离激元纳米颗粒的独特等离子体特性，将发现聚合物刷的形成机制，嵌段共聚物/2D等离激元纳米粒子界面在层次中以纤维中的层次定向自组装，并将其置于结构和光疗特性。提出的目标将通过三个主要任务实现：1）采用2D等离激元纳米颗粒来揭示聚合物刷形成机制，2）使用块共聚物指导2D等离激元纳米颗粒的自组装，并在纤维中形成层次的层次结构，并在纤维上进行跨度的构造，3）了解，3）了解块的混合物，3）了解纳米颗粒。预计块共聚物将在纤维中表现出首选的域取向，而在每个块共聚物结构域中，2D纳米颗粒与2D纳米颗粒的单层形成堆叠层。分层纳米结构将授予聚合物的新型等离子性能，并成为在波导，光伏，粘合剂和3D打印墨水中应用的活跃候选者。本奖反映了NSF的法定任务，并被认为是通过该基金会的知识分子功能和广泛影响的评估来评估NSF的法定任务。

项目成果

期刊论文数量（26）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

Critical Role of Polystyrene Layer on Plasmonic Silver Nanoplates in Organic Photovoltaics

DOI：
10.1021/acsaem.8b01860
发表时间：
2019-03
期刊：
ACS Applied Energy Materials
影响因子：
6.4
作者：
Jonathan Metzman;Assad U. Khan;B. Magill;G. Khodaparast;J. Heflin;Guoliang Liu
通讯作者：
Jonathan Metzman;Assad U. Khan;B. Magill;G. Khodaparast;J. Heflin;Guoliang Liu

Janus Plasmonic Silver Nanoplatelets for Interface Stabilization

DOI：
10.1021/acsanm.8b01141
发表时间：
2018-10-01
期刊：
ACS APPLIED NANO MATERIALS
影响因子：
5.9
作者：
Guo, Yichen;Khan, Assad U.;Liu, Guoliang
通讯作者：
Liu, Guoliang

Chemical upcycling of polyethylene, polypropylene, and mixtures to high-value surfactants

DOI：
10.1126/science.adh0993
发表时间：
2023-08
期刊：
Science
影响因子：
56.9
作者：
Zhen Xu;N. E. Munyaneza;Qikun Zhang;Mengqi Sun;C. Posada;P. Venturo;Nicholas A. Rorrer;Joel Miscall;B. Sumpter;Guoliang Liu
通讯作者：
Zhen Xu;N. E. Munyaneza;Qikun Zhang;Mengqi Sun;C. Posada;P. Venturo;Nicholas A. Rorrer;Joel Miscall;B. Sumpter;Guoliang Liu

Recent development of polyimides: Synthesis, processing, and application in gas separation