Organobismuth Copolymers as Tunable High Refractive Index Materials

有机铋共聚物作为可调谐高折射率材料

• 批准号: 2033308
• 负责人: Jakub Hyvl
• 金额: $ 21.4万
• 依托单位: University of Hawaii
• 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: 2021-01-01 至 2024-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2033308&HistoricalAwards=false
• 关键词: Organobismuth; Copolymers; Tunable; Refractive; Index

The project establishes a robust collaboration between the PI Hyvl’s lab at University of Hawaii at Manoa (UHM) and the Genzer’s lab at North Carolina State University (NCSU). This research collaboration will investigate copolymerization of organic and organometallic monomers, generating knowledge about fundamental polymer science, exploring varied synthetic alternatives, and ascer-taining the properties of hitherto unknown copolymeric materials. The preliminary results demonstrate that the bismuth metallopolymers have an unusually high refractive index. Refractive index is a dimensionless number describing the ability of light to travel through the material. High refractive indices in polymers are desirable for applications in optics. The high refractive index and transparency of our materials ought to translate into anti-reflective coatings for visible light and near IR optics. This project will train one graduate student who will directly participate and get hands-on experience with polymer research both at UHM and NCSU. The fellowship will generate research opportunities for graduate and undergraduate students in the area of polymer chemistry, augmenting the education of the next generation of scientists and engineers. By collaborative partnering with local institutions, will provide opportunities for underrepresented Native Hawaiian and Pacific Islander students to do research in our group. This RII Track-4 EPSCoR Research Fellows project will further PI Hyvl’s career and build research capacity at University of Hawaii (UHM) by strengthening a collaboration with the Genzer lab at North Carolina State University (NCSU). The research collaboration will investigate copolymerization of organic and organometallic monomers, generating knowledge about fundamental polymer science, exploring varied synthetic alternatives, and ascertaining the properties of hitherto unknown copolymeric materials. The project leverages PI Hyvl’s synthetic expertise and the unique and premier polymer characterization expertise of the Genzer group at NCSU. The project has three main objectives. (i)The synthesis of bismuth-containing monomers, diaryl(4-vinylphenyl)bismuthane (aryl = phenyl or tolyl), to be carried out at the home's institution laboratory. (ii)Polymerization of prepared bismuth-containing monomers with styrene will afford the corresponding copolymers. It is expected to examine a variety of different polymerization methods and techniques including radical and ionic polymerizations to preferably prepare random or at least pseudorandom copolymers. The synthesized copolymers will be characterized by common techniques (GPC and MALDI) present at the Host Institution. (iii)The prepared copolymers are to be deposited on glass or silicon wafer surfaces through spin-coating and transmittance and refractive indexes will be evaluated, including also evaluation of the monomer distribution in the copolymer. The research outcomes will be published in peer-reviewed journals and will enhance extramural materials science funding opportunities. UHM will benefit by creation of a new research capacity and the creation of a new curriculum on polymer chemistry, the first of its kind in Hawai`i.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.

该项目在夏威夷大学马诺阿分校(UHM)的Pi Hyvl实验室和北卡罗来纳州立大学(NCSU)的Genzer实验室之间建立了强有力的合作。这项研究合作将研究有机和有机金属单体的共聚，产生有关基础聚合物科学的知识，探索各种合成替代品，并获得迄今未知的共聚材料的性能。初步结果表明，铋金属聚合物具有异常高的折射率。折射率是描述光穿过材料的能力的无量纲数字。聚合物中的高折射率在光学应用中是可取的。我们材料的高折射率和透明度应该转化为可见光和近红外光学的减反射涂层。这个项目将培养一名研究生，他将直接参与UHM和NCSU的聚合物研究并获得实践经验。该奖学金将为聚合物化学领域的研究生和本科生创造研究机会，加强对下一代科学家和工程师的教育。通过与当地机构的合作，将为未被充分代表的夏威夷原住民和太平洋岛民学生提供在我们团队中进行研究的机会。这个RII Track-4 EPSCoR研究人员项目将通过加强与北卡罗来纳州立大学Genzer实验室的合作，进一步促进Pi Hyvl的职业生涯，并在夏威夷大学(UHM)建立研究能力。研究合作将研究有机和有机金属单体的共聚，产生有关基础聚合物科学的知识，探索各种合成替代品，并确定迄今未知的共聚材料的性质。该项目利用了Pi Hyvl的合成专业知识和NCSU Genzer小组独特的、一流的聚合物表征专业知识。该项目有三个主要目标。(I)含铋单体--二芳基(4-乙烯基苯基)铋(芳基=苯基或甲苯基)的合成，将在家庭机构实验室进行。(Ii)将所制备的含铋单体与苯乙烯聚合，即可得到相应的共聚物。人们希望研究各种不同的聚合方法和技术，包括自由基聚合和离子聚合，以更好地制备无规或至少是伪随机共聚物。合成的共聚物将通过东道主研究所现有的通用技术(GPC和MALDI)进行表征。(Iii)通过旋涂将所制备的共聚物沉积在玻璃或硅片表面，并将评估其透射率和折射率，包括评估单体在共聚物中的分布。研究成果将发表在同行评议的期刊上，并将增加校外材料科学的资助机会。UHM将从创建新的研究能力和创建新的聚合物化学课程中受益，这是夏威夷第一个此类课程。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。