Collaborative Research: Semiconducting Behavior in Silsesquioxane Macromonomers and Polymers

合作研究:倍半硅氧烷大分子单体和聚合物的半导体行为

基本信息

  • 批准号:
    2103628
  • 负责人:
  • 金额:
    $ 10.12万
  • 依托单位:
  • 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:
    2021-08-15 至 2024-07-31
  • 项目状态:
    已结题

项目摘要

With support of the Macromolecular, Supramolecular and Nanochemistry Program in the Division of Chemistry, Professors Richard Laine and John Kieffer of the University of Michigan-Ann Arbor, and Professor Aleks Rebane of Montana State University will develop new families of silicone-based polymers. Silicone oils and rubbers are hydrophobic, colorless, and electrically insulating materials and as such find wide uses. Recently, two families of silicon-containing polymers were developed wherein silicon-containing building blocks alternate with fluorescent ones. Unlike most known silicon-based materials, these polymers are intensely colored, brightly fluorescent, and behave as semiconductors. Importantly, they still retain key properties of traditional silicones, such as water and flame resistance. Semiconducting polymers, such as, organic light-emitting diodes (OLEDs) are found in flat panel displays and in some instances can be used to convert sunlight into electricity. Hence the study of these new polymer families could lead to unexpected and potentially useful properties, bringing new, low-cost and more robust materials to many everyday societal applications. This research project will facilitate the training of graduate and undergraduate students to expand knowledge of these materials and their behavior. Silsesquioxanes (SQs) are unique, regularly symmetric 3D macromolecules that resemble single silica crystals in being extremely robust, some remaining air-stable up to 600 °C. The phenyl derivatives of SQs can also be selectively functionalized by using electrophilic substitution reactions. The cage centers interact with appended moieties in the excited state providing 3D conjugation (cage centered LUMOs) and semiconducting behavior. There is potential to develop new families of polymers with semiconducting properties wherein siloxane bridges offer potential value for photonic applications, for example for displays, hybrid lasers and photovoltaics. These avenues of scientific inquiry, which constitute the basis for the broad collaboration, aim at expanding the number of cage architectures that form the presumed cage centered LUMOs, detailing the substitution patterns required to promote onset of such properties, and optimizing one- and two-photon quantum efficiencies for display, white light and laser applications. These goals will be pursued through detailed photophysical measurements, theoretical modeling, and electrochemical probing with the aim of improving fundamental understanding of structure-property relationships in this polymer family. The potential exists to make available important new sets of semiconducting polymers for chemists, physicists and materials scientists and engineers.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.
在化学系大分子、超分子和纳米化学项目的支持下,密歇根大学安娜堡分校的Richard Laine和John Kieffer教授以及蒙大拿州立大学的Aleks Rebane教授将开发新的硅基聚合物系列。硅油和硅橡胶是疏水、无色和电绝缘材料,因此用途广泛。最近,开发了两类含硅聚合物,其中含硅结构单元与荧光结构单元交替。与大多数已知的硅基材料不同,这些聚合物具有强烈的颜色,明亮的荧光,并表现为半导体。重要的是,它们仍然保留了传统有机硅的关键特性,如防水和阻燃性。半导体聚合物,例如有机发光二极管(OLED),在平板显示器中发现,并且在某些情况下可用于将阳光转换成电。因此,对这些新聚合物家族的研究可能会带来意想不到的和潜在有用的特性,为许多日常社会应用带来新的,低成本和更坚固的材料。本研究项目将促进研究生和本科生的培训,以扩大这些材料及其行为的知识。倍半硅氧烷(SQ)是独特的、规则对称的3D大分子,类似于二氧化硅单晶,非常坚固,一些在高达600 °C的温度下仍保持空气稳定。SQ的苯基衍生物也可以通过使用亲电取代反应选择性地官能化。笼中心与处于激发态的附加部分相互作用,提供3D共轭(笼中心LUMO)和半导体行为。存在开发具有半导体性质的聚合物的新家族的潜力,其中硅氧烷桥为光子应用提供潜在价值,例如用于显示器、混合激光器和光致发光。这些科学探究的途径构成了广泛合作的基础,旨在扩大形成假定的笼中心LUMO的笼结构的数量,详细说明促进这些特性发生所需的替代模式,并优化显示器,白色光和激光应用的单光子和双光子量子效率。这些目标将通过详细的物理测量,理论建模和电化学探测来实现,目的是提高对该聚合物家族结构-性能关系的基本理解。该奖项反映了NSF的法定使命,并通过使用基金会的知识价值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

期刊论文数量(2)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
On‐off‐on Control of Molecular Inversion Symmetry via Multi‐stage Protonation: Elucidating Vibronic Laporte Rule
通过多级质子化控制分子反转对称性:阐明电子拉波尔特规则
  • DOI:
    10.1002/anie.202212581
  • 发表时间:
    2022
  • 期刊:
  • 影响因子:
    0
  • 作者:
    Stark, Charles W.;Rammo, Matt;Trummal, Aleksander;Uudsemaa, Merle;Pahapill, Juri;Sildoja, Meelis‐Mait;Tshepelevitsh, Sofja;Leito, Ivo;Young, David C.;Szymański, Bartosz
  • 通讯作者:
    Szymański, Bartosz
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Aleksander Rebane其他文献

Strongly Polarized π‑Extended 1,4-Dihydropyrrolo[3,2‑emb/em]pyrroles Fused with Tetrazolo[1,5‑ema/em]quinolines
强极化的π-扩展 1,4-二氢吡咯并[3,2-emb/em]吡咯与四唑并[1,5-ema/em]喹啉稠合
  • DOI:
    10.1021/acs.joc.3c02916
  • 发表时间:
    2024-04-05
  • 期刊:
  • 影响因子:
    3.600
  • 作者:
    Mohammad B. Teimouri;Irena Deperasińska;Matt Rammo;Marzena Banasiewicz;Charles W. Stark;Łukasz Dobrzycki;Michał K. Cyrański;Aleksander Rebane;Daniel T. Gryko
  • 通讯作者:
    Daniel T. Gryko
Unified Description of Optical Properties and Photostability of Fluorescent Proteins by Means of the Chromophore-Protein Electrostatic Interactions
  • DOI:
    10.1016/j.bpj.2011.11.2204
  • 发表时间:
    2012-01-31
  • 期刊:
  • 影响因子:
  • 作者:
    Mikhail Drobizhev;Thomas E. Hughes;Aleksander Rebane;Bret Davis;Igor Topol;J. Nathan Scott;Patrik R. Callis
  • 通讯作者:
    Patrik R. Callis
Herzberg-Teller Vibronic Contribution to Mesomeric Dipole Moment Determines Two-Photon Absorptivity of Fluorescent Proteins
  • DOI:
    10.1016/j.bpj.2010.12.953
  • 发表时间:
    2011-02-02
  • 期刊:
  • 影响因子:
  • 作者:
    Mikhail Drobizhev;Nikolay S. Makarov;Shane Tillo;Thomas E. Hughes;Aleksander Rebane
  • 通讯作者:
    Aleksander Rebane
Color Hues in Fluorescent Proteins with the Same Chromophore are due to Internal Quadratic Stark Effect
  • DOI:
    10.1016/j.bpj.2009.12.2229
  • 发表时间:
    2010-01-01
  • 期刊:
  • 影响因子:
  • 作者:
    Mikhail Drobizhev;Shane Tillo;Nikolay S. Makarov;Aleksander Rebane;Thomas Hughes
  • 通讯作者:
    Thomas Hughes

Aleksander Rebane的其他文献

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{{ truncateString('Aleksander Rebane', 18)}}的其他基金

Maximum coherence in optical transitions in rare earth ion-activated solids
稀土离子激活固体中光学跃迁的最大相干性
  • 批准号:
    0903937
  • 财政年份:
    2009
  • 资助金额:
    $ 10.12万
  • 项目类别:
    Standard Grant
Photo Gated Spectral Hole Burning Holograms
光门控光谱孔燃烧全息图
  • 批准号:
    9712342
  • 财政年份:
    1997
  • 资助金额:
    $ 10.12万
  • 项目类别:
    Continuing Grant

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  • 批准号:
    10774081
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  • 项目类别:
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合作研究:倍半硅氧烷大分子单体和聚合物的半导体行为
  • 批准号:
    2103602
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