Chemically Functionalized Nanoscale Materials: Building Functional Polymers for Nanoscale Materials and Interfaces

化学功能化纳米材料：构建用于纳米材料和界面的功能聚合物

• 批准号: 1904660
• 负责人: Todd Emrick
• 金额: $ 48万
• 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: 2019
• 资助国家: 美国
• 起止时间: 2019-08-01 至 2023-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1904660&HistoricalAwards=false
• 关键词: Chemically; Functionalized; Nanoscale; Materials; Building

Semiconductor nanostructures can be created from many different types of materials. They also come in many different shapes and sizes, with dimensions that can be 100,000 times thinner than a sheet of paper. The unique properties of these extremely tiny crystals have growing impact in the emerging science and technology of wearable sensors, flexible electronics, solar cells, and personalized medicine. However, finding ways to combine these different structures into electronically active materials remains an important challenge. With support from the Macromolecular, Supramolecular, and Nanochemistry Program in the Division of Chemistry, Professor Todd Emrick and his students at the University of Massachusetts Amherst are creating synthetic polymers that link nanostructures together, enabling easy transport of charges between them. Their discoveries could lead to more efficient devices, ranging from flexible, mobile solar cells to faster performing, lighter weight electronics. The project provides education and training to a diverse population of researchers, including graduate students engaged in Ph.D. research, undergraduates gaining their first research experiences, and high school students participating in an apprenticeship program that will increase opportunities for young researchers in STEM (Science, Technology, Engineering, and Mathematics) fields.The project is investigating new approaches to synthesizing polymers containing functionality that enhances the electronic activity of the materials they contact, focusing especially on zwitterionic and charged groups. These polymers are investigated as coatings (from 5 to 100 nm thickness) on electronically active substrates, such as transition metal dichalcogenides (TMDC) nanostructures, and as ligands on perovskite nanoparticles, facilitating interfacial contact and improving the lifetime and stability of electronic contact. By emphasizing conjugated polymer zwitterions (CPZs) and metal-free polymerization methods, this study is preparing materials with chemistry that is ideally suited for integration into well-defined ultrathin interfacial layers and robust multilayer structures. These synthetic polymer chemistry designs are producing new knowledge in structure-property relationships involving soft materials, including the effect of the position and orientation of the charged moieties within CPZs that dictate their interfacial contact.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.

半导体纳米结构可以由许多不同类型的材料制成。它们也有许多不同的形状和大小，尺寸可以比一张纸薄10万倍。这些极其微小的晶体的独特性质在可穿戴传感器、柔性电子产品、太阳能电池和个性化医疗等新兴科学技术中产生了越来越大的影响。然而，找到将这些不同结构结合成具有电子活性的材料的方法仍然是一个重要的挑战。在化学系大分子、超分子和纳米化学项目的支持下，马萨诸塞大学阿默斯特分校的托德·埃姆里克教授和他的学生正在创造将纳米结构连接在一起的合成聚合物，使电荷能够在它们之间轻松传输。他们的发现可能会带来更高效的设备，从灵活的移动太阳能电池到性能更快、重量更轻的电子产品。该项目为不同类型的研究人员提供教育和培训，包括从事博士研究的研究生，获得第一次研究经验的本科生，以及参加学徒计划的高中生，该计划将增加STEM(科学、技术、工程和数学)领域的年轻研究人员的机会。该项目正在研究合成聚合物的新方法，这些聚合物含有增强他们接触的材料的电子活性的功能，特别是两性离子和带电基团。这些聚合物被研究为电子活性衬底上的涂层(厚度从5到100 nm)，例如过渡金属二卤化物(TMDC)纳米结构，以及钙钛矿型纳米粒子上的配体，促进界面接触并提高电子接触的寿命和稳定性。通过强调共轭聚合物两性离子(CPZ)和无金属聚合方法，这项研究正在制备化学材料，这种材料非常适合整合到定义良好的超薄界面层和坚固的多层结构中。这些合成聚合物化学设计在涉及软材料的结构-性质关系方面产生了新的知识，包括CPZ内决定其界面接触的带电部分的位置和方向的影响。该奖项反映了NSF的法定使命，并通过使用基金会的智力优势和更广泛的影响审查标准进行评估，被认为值得支持。

项目成果

Polymer Zwitterions with Phosphonium Cations

• DOI: 10.1021/jacs.1c00793
• 发表时间: 2021-04-22
• 期刊: JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
• 影响因子: 15
• 作者: Brown, Marcel U.;Triozzi, Alexandria;Emrick, Todd
• 通讯作者: Emrick, Todd

Coupled oscillation and spinning of photothermal particles in Marangoni optical traps

• DOI: 10.1073/pnas.2024581118
• 发表时间: 2021-05-04
• 期刊: PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
• 影响因子: 11.1
• 作者: Kim, Hyunki;Sundaram, Subramanian;Hayward, Ryan C.
• 通讯作者: Hayward, Ryan C.

Zwitterionic Block Copolymers for the Synthesis and Stabilization of Perovskite Nanocrystals

用于钙钛矿纳米晶体合成和稳定的两性离子嵌段共聚物

• DOI: 10.1002/chem.202200409
• 发表时间: 2022
• 期刊: Chemistry – A European Journal
• 作者: Cueto, Christopher;Donoghue, Colleen;Bolduc, Kimberly;Emrick, Todd
• 通讯作者: Emrick, Todd

Reconfiguration and Reorganization of Bottlebrush Polymer Surfactants

洗瓶刷聚合物表面活性剂的重构和重组

• DOI: 10.1002/ange.202200530
• 发表时间: 2022
• 期刊: Angewandte Chemie
• 作者: Seong, H.G.;Chen, Z.;Emrick, T.;Russell, T.P.
• 通讯作者: Russell, T.P.

Understanding Hole Extraction of Inverted Perovskite Solar Cells

了解倒置钙钛矿太阳能电池的孔提取

• DOI: 10.1021/acsami.0c18108
• 发表时间: 2020
• 期刊: ACS Applied Materials & Interfaces
• 作者: Zhewei Zhang;Madhu Sheri;Zachariah A. Page;Todd Emrick;Akinori Saeki;Yao Liu;Thomas P. Russell
• 通讯作者: Thomas P. Russell