RUI: Orientational Relaxation of Chromophore Order in Nonlinear Optical Block Copolymers

RUI:非线性光学嵌段共聚物中发色团顺序的取向弛豫

基本信息

  • 批准号:
    1005462
  • 负责人:
  • 金额:
    $ 26.45万
  • 依托单位:
  • 依托单位国家:
    美国
  • 项目类别:
    Continuing Grant
  • 财政年份:
    2010
  • 资助国家:
    美国
  • 起止时间:
    2010-06-01 至 2011-07-31
  • 项目状态:
    已结题

项目摘要

TECHNICAL:Nonlinear optical materials for applications in optical signal processing is extended to polymers, which offer greater compositional flexibility than conventional crystalline materials. Optical functionality in a polymer is incorporated by blending a chromophore with a transparent polymer host and electrically poling the material to induce a noncentrosymmetric ordering of chromophores. Research to date has largely been confined to homopolymer hosts, which offer limited options for tuning the chromophore micronenvironment. A promising alternate approach to achieving stable dipolar ordering is to selectively encapsulate the chromophore in one domain of a block copolymer. In this project, second harmonic generation and polarized absorption spectroscopy experiments will be used to make detailed measurements of the poling-induced order parameter and the post-poling orientational relaxation times of chromophores encapsulated in block copolymer domains, using the PS-b-P4VP block copolymer as a model system. Covalent and hydrogen-bonding schemes for selective chromophore encapsulation will be used to investigate orientational relaxation as a function of bonding mode. This model system will help probe to what extent the disparate requirements for poling and relaxation can be decoupled through appropriate choice of block copolymer system.NON-TECHNICAL:Nonlinear optical materials are integral to applications such as fiber optic data transmission for Internet-based communication. Traditional materials are crystalline, which are limited both in cost of fabrication and ultimate bandwidth capability. Polymeric materials are an alternative that offer flexibility in design and cost, but their long-term stability in deployed devices has not been fully established. One promising polymer category is that of block copolymers, which are effectively ordered combinations of chemically distinct polymers on the nanoscale. This research will utilize laser-based experiments to measure the long-term stability of block copolymer materials that have the potential for use in telecommunications devices. The project will employ physics and chemistry undergraduates in a vigorous interdisciplinary research program at Drew University. This will provide them with valuable experience in thin-film characterization, lasers, and related photonic technologies, all of which are in demand by high-technology industries and graduate training programs. Students will also benefit from interacting with collaborators at major research institutions, including the Johns Hopkins University and the University of Wisconsin.
技术:用于光信号处理的非线性光学材料扩展到聚合物,它比传统的晶体材料提供更大的组成灵活性。聚合物中的光学功能是通过将发色团与透明聚合物主体混合并对材料进行电极化以诱导发色团的非中心对称有序来实现的。迄今为止的研究主要局限于均聚体宿主,这为调整发色团微环境提供了有限的选择。实现稳定偶极有序的另一种有希望的方法是选择性地将发色团封装在嵌段共聚物的一个域中。本项目以PS-b-P4VP嵌段共聚物为模型体系,利用二次谐波产生和极化吸收光谱实验对嵌段共聚物域内封装的发色团的极化诱导有序参数和极化后取向弛豫时间进行详细测量。选择性发色团包封的共价和氢键方案将用于研究取向弛豫作为键模式的函数。该模型系统将有助于探索通过适当选择嵌段共聚物体系,可以在多大程度上解耦对极化和弛豫的不同要求。非技术:非线性光学材料是应用不可或缺的,如基于互联网的通信的光纤数据传输。传统的材料是晶体的,这在制造成本和最终带宽能力上都是有限的。聚合物材料是另一种选择,在设计和成本上具有灵活性,但其在部署设备中的长期稳定性尚未完全建立。嵌段共聚物是一种很有前途的聚合物,它是纳米尺度上化学性质不同的聚合物的有效有序组合。这项研究将利用基于激光的实验来测量嵌段共聚物材料的长期稳定性,这种材料有可能用于电信设备。该项目将在德鲁大学的一个充满活力的跨学科研究项目中雇用物理和化学本科生。这将为他们提供薄膜表征,激光和相关光子技术的宝贵经验,所有这些都是高科技行业和研究生培训计划所需要的。学生还将受益于与主要研究机构的合作者的互动,包括约翰霍普金斯大学和威斯康星大学。

项目成果

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David McGee其他文献

Shallow carbonate geochemistry in the Bahamas since the last interglacial period
末次间冰期以来巴哈马浅层碳酸盐岩地球化学
  • DOI:
    10.1016/j.epsl.2023.118566
  • 发表时间:
    2024
  • 期刊:
  • 影响因子:
    5.3
  • 作者:
    Stacey Edmonsond;Matthew D. Nadeau;Andrew C. Turner;Ziman Wu;Emily C. Geyman;A. Ahm;Blake Dyer;Sergey Oleynik;David McGee;Daniel Stolper;John A. Higgins;Adam Maloof
  • 通讯作者:
    Adam Maloof
Linking Glacial-Interglacial states to multiple equilibria 1 of climate 2
将冰期-间冰期状态与气候 2 的多重平衡 1 联系起来
  • DOI:
  • 发表时间:
    2017
  • 期刊:
  • 影响因子:
    0
  • 作者:
    David Ferreira;John Marshall;Takamitsu Ito;David McGee
  • 通讯作者:
    David McGee
Past abrupt changes, tipping points and cascading impacts in the Earth system
过去地球系统中的突然变化、临界点和连锁影响
  • DOI:
    10.1038/s41561-021-00790-5
  • 发表时间:
    2021-07-29
  • 期刊:
  • 影响因子:
    16.100
  • 作者:
    Victor Brovkin;Edward Brook;John W. Williams;Sebastian Bathiany;Timothy M. Lenton;Michael Barton;Robert M. DeConto;Jonathan F. Donges;Andrey Ganopolski;Jerry McManus;Summer Praetorius;Anne de Vernal;Ayako Abe-Ouchi;Hai Cheng;Martin Claussen;Michel Crucifix;Gilberto Gallopín;Virginia Iglesias;Darrell S. Kaufman;Thomas Kleinen;Fabrice Lambert;Sander van der Leeuw;Hannah Liddy;Marie-France Loutre;David McGee;Kira Rehfeld;Rachael Rhodes;Alistair W. R. Seddon;Martin H. Trauth;Lilian Vanderveken;Zicheng Yu
  • 通讯作者:
    Zicheng Yu
Recent Constraints on MIS 3 Sea Level Support Role of Continental Shelf Exposure as a Control on Indo‐Pacific Hydroclimate
大陆架暴露控制印度洋-太平洋水文气候的 MIS 3 海平面支持作用的最新限制
Investigating the use of <sup>232</sup>Th/<sup>230</sup>Th as a dust proxy using co-located seawater and sediment samples from the low-latitude North Atlantic
  • DOI:
    10.1016/j.gca.2017.07.033
  • 发表时间:
    2017-10-01
  • 期刊:
  • 影响因子:
  • 作者:
    George H. Rowland;Hong Chin Ng;Laura F. Robinson;Jerry F. McManus;Kais J. Mohamed;David McGee
  • 通讯作者:
    David McGee

David McGee的其他文献

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{{ truncateString('David McGee', 18)}}的其他基金

RUI: Spatial light modulator technology for the on-demand fabrication of optical microstructures in polarization-sensitive materials
RUI:用于在偏振敏感材料中按需制造光学微结构的空间光调制器技术
  • 批准号:
    2024118
  • 财政年份:
    2020
  • 资助金额:
    $ 26.45万
  • 项目类别:
    Standard Grant
MRI: Acquisition of a Spatial Light Modulator System for Research and Education in Optical Materials, Bioscience, and Human-Computer Interaction
MRI:获取空间光调制器系统,用于光学材料、生物科学和人机交互的研究和教育
  • 批准号:
    1919557
  • 财政年份:
    2019
  • 资助金额:
    $ 26.45万
  • 项目类别:
    Standard Grant
Collaborative Research: Mantle Dynamics, Lithospheric Structure, and Topographic Evolution of the Southeastern US Continental Margin
合作研究:地幔动力学、岩石圈结构和美国东南部大陆边缘的地形演化
  • 批准号:
    1251329
  • 财政年份:
    2013
  • 资助金额:
    $ 26.45万
  • 项目类别:
    Continuing Grant
RUI: Orientational Relaxation of Chromophore Order in Nonlinear Optical Block Copolymers
RUI:非线性光学嵌段共聚物中发色团顺序的取向弛豫
  • 批准号:
    1138416
  • 财政年份:
    2011
  • 资助金额:
    $ 26.45万
  • 项目类别:
    Continuing Grant
RUI: Photodegradation and Poling Alignment Stability of Branched azo Chromophores in Electro-Optic Polymer Blends
RUI:电光聚合物共混物中支化偶氮发色团的光降解和极化配向稳定性
  • 批准号:
    0504105
  • 财政年份:
    2005
  • 资助金额:
    $ 26.45万
  • 项目类别:
    Standard Grant
MRI: Acquisition of Instrumentation for Optical Propagation Loss Measurement in Novel Waveguide Materials
MRI:购买用于新型波导材料中光传播损耗测量的仪器
  • 批准号:
    0520707
  • 财政年份:
    2005
  • 资助金额:
    $ 26.45万
  • 项目类别:
    Standard Grant
RUI: Phase Stability and Chromophore Reorientation in Photorefractive Polymer Composites
RUI:光折变聚合物复合材料中的相稳定性和发色团重新取向
  • 批准号:
    0103817
  • 财政年份:
    2001
  • 资助金额:
    $ 26.45万
  • 项目类别:
    Continuing Grant
Materials Science and Nonlinear Optics in Physics and Chemistry Laboratories
物理和化学实验室中的材料科学和非线性光学
  • 批准号:
    9996277
  • 财政年份:
    1999
  • 资助金额:
    $ 26.45万
  • 项目类别:
    Standard Grant
Materials Science and Nonlinear Optics in Physics and Chemistry Laboratories
物理和化学实验室中的材料科学和非线性光学
  • 批准号:
    9850824
  • 财政年份:
    1998
  • 资助金额:
    $ 26.45万
  • 项目类别:
    Standard Grant

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Liquid Crystalline Orientational Excitations in Biological Membranes
生物膜中的液晶取向激发
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