Opportunities in Block Copolymers: Reactive Rod/Coils and Magnetooptic Nanocomposites
嵌段共聚物的机遇:反应棒/线圈和磁光纳米复合材料
基本信息
- 批准号:0308133
- 负责人:
- 金额:$ 36万
- 依托单位:
- 依托单位国家:美国
- 项目类别:Continuing Grant
- 财政年份:2003
- 资助国家:美国
- 起止时间:2003-07-01 至 2008-06-30
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
The research proposed will further the possibility that block copolymers gain entry into higher value, high technology applications, such as chemically patterned surface coatings, lithographic masks and improved optical components. To this end, the investigator proposes two broadly related fundamental research areas: (1) creation of nanopatterns with surface-reactive rod/coil diblock copolymers and (2) fabrication of tunable magneto-optical materials from nanoparticle-filled block copolymers. In both these projects, the PI's previous experience with block copolymer processing and structure-property characterization will provide a firm base to build structure and chemical interactions between the host copolymer and a substrate and/or an applied field, or between the host polymer and surface engineered nanoparticles determines the resultant nanocomposite morphology will permit attainment of new and enhanced physical properties. Improved insight into the principles of how to best create ordered block copolymer based systems will have broad applicability to a host of emerging technologies. Key to this will be knowledge of how the processing conditions interplay with chemical structure to achieve desirable end states and thus afford superior materials based on BCPs.Rod/coil BCPs and their blends with both coil- and rod-homopolymers are largely unexplored and present an opportunity to learn about the role of liquid crystallinity on microphase separation. Emphasis will be on rod/coil - coil blends to investigate rod BCP micelles, and on the presence of reactive groups on the rod block to provide means for locking-in morphologics, for tuning substrate interaction, and to create synthetic anistropic organic nano-objects, which can then be employed as unique building blocks in hierarchical self assembly. Self assembled nanocomposites based on polymer-inorganic materials with magnetic field tunable optical properties will be produced by spatially templating superparamagnetic nanoparticles in BCPs. Surface engineering nanoparticles will be sequestered in the BCP and should display superior properties over the corresponding bulk materials due to their small size (single domain particles). By choosing a BCP that has sufficient molecular weight so that the microdomains' periodicity provides a visible wavelength photonic ban gap (PBG), these researchers will fabricate a magnetic field tunable PBG materials. Such materials have potential as polarization rotators and optical isolators ("one way light valves") via the field dependent Verdet constant of the composite. In addition, the experimental data set of nanoparticle-BDP morphologies will be used to compare to recent theoretical models of the geometry of nanoparticle-BCP self-assembly.This project has several ways to impact society. Visits of graduate students to other universities and to industry are envisioned to give them a broader experience, as well as to access to novel instrumentation. The PI has several highly productive collaborations: C. Ober and S. Gruner (Cornell) - block copolymer synthesis and synchrotron scattering (routine visits by 3-4 students to CHESS and short (one week) periods to Ober lab; S. Margel (Var-Llan, Israel) - nanoparticle synthesis (due to the present situation in Israel, no students have yet visited his lab) and B. Lotz Strasbourg) - TEM and electron diffraction characterization (month long visit to CNRS). The PI has recent experience co-founding a start up (Omni Guide Communications, Inc.) with another professor and a former graduate student, affording a perspective on how to undertake tech transfer from the university into the market place. Over the past 12 years, the PI has filed a total of 15 patent disclosures and 5 patents have been issued. In addition, the PI's group has always hosted several undergraduates, called UROPs, at MIT. Their successful participation in research is attested by co-authorzship of several publications.
这项研究将进一步推动嵌段共聚物进入更高价值、高技术应用领域的可能性,如化学图案化表面涂层、光刻掩模和改进的光学元件。 为此,研究人员提出了两个广泛相关的基础研究领域:(1)用表面反应性棒/线圈二嵌段共聚物创建纳米图案和(2)用纳米颗粒填充的嵌段共聚物制造可调磁光材料。 在这两个项目中,PI先前在嵌段共聚物加工和结构-性能表征方面的经验将为主体共聚物与基材和/或应用领域之间,或主体聚合物与表面工程纳米颗粒之间的结构和化学相互作用提供坚实的基础,从而确定所得纳米复合材料形态将允许实现新的和增强的物理性能。 对如何最好地创建基于有序嵌段共聚物的系统的原理的更深入的了解将对许多新兴技术具有广泛的适用性。 这将是关键的加工条件如何与化学结构相互作用,以实现理想的最终状态,从而提供上级材料的基础上BCPs.Rod/coil BCP和他们的共混物与线圈和棒均聚物在很大程度上是未开发的知识,并提出了一个机会,了解液晶性的作用,对微相分离。 重点将是棒/线圈-线圈共混物,以调查棒BCP胶束,并在棒块上的反应基团的存在下,以提供锁定形态学的手段,用于调谐基板相互作用,并创建合成各向异性的有机纳米物体,然后可以采用作为独特的积木在分层自组装。 通过在BCP中空间模板化超顺磁性纳米粒子,可以制备具有磁场可调光学性质的聚合物-无机材料自组装纳米复合材料。 表面工程纳米颗粒将被隔离在BCP中,并且由于它们的小尺寸(单畴颗粒),应该显示出优于相应的本体材料的上级性质。 通过选择具有足够分子量的BCP,使得微区的周期性提供可见波长的光子带隙(PBG),这些研究人员将制造磁场可调谐的PBG材料。 这样的材料具有通过复合材料的场依赖性费尔德常数作为偏振旋转器和光学隔离器(“单向光阀”)的潜力。 此外,纳米粒子-BDP形态的实验数据集将被用来与纳米粒子-BCP自组装几何形状的最新理论模型进行比较。 研究生访问其他大学和行业的设想,让他们更广泛的经验,以及获得新的仪器。 PI有几个非常富有成效的合作:C。Ober和S.格鲁纳(康奈尔)-嵌段共聚物合成和同步辐射散射(3-4名学生定期访问国际象棋和短期(一周)的奥伯实验室; S。Margel(Var-Llan,以色列)-纳米颗粒合成(由于以色列目前的情况,还没有学生参观他的实验室)和B。Lotz斯特拉斯堡)- TEM和电子衍射表征(为期一个月的CNRS访问)。 PI最近有共同创办一家初创公司(Omni Guide Communications,Inc.)的经验。与另一位教授和前研究生,提供了一个关于如何进行技术转移从大学到市场的角度。 在过去的12年里,PI共提交了15项专利披露,并已发布5项专利。 此外,PI的小组一直在麻省理工学院接待几名本科生,称为UROP。 他们成功地参与了研究,几份出版物的合著证明了这一点。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
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Edwin Thomas其他文献
Black Hole Thermodynamics
黑洞热力学
- DOI:
10.1142/9781783264834_0004 - 发表时间:
2005 - 期刊:
- 影响因子:5
- 作者:
D. Raine;Edwin Thomas - 通讯作者:
Edwin Thomas
Multi-Res-Attention UNet: A CNN Model for the Segmentation of Focal Cortical Dysplasia Lesions from Magnetic Resonance Images
多分辨率注意力 UNet:用于从磁共振图像中分割局灶性皮质发育不良病变的 CNN 模型
- DOI:
- 发表时间:
2020 - 期刊:
- 影响因子:7.7
- 作者:
Edwin Thomas;Pawan S. Jogi;Shushant Kumar;Anmol Horo;S. Niyas;S. Vinayagamani;C. Kesavadas;Jeny Rajan - 通讯作者:
Jeny Rajan
Edwin Thomas的其他文献
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{{ truncateString('Edwin Thomas', 18)}}的其他基金
EAGER: Structures of Defects and Interfaces in Block Copolymer Materials
EAGER:嵌段共聚物材料中的缺陷和界面结构
- 批准号:
1742864 - 财政年份:2017
- 资助金额:
$ 36万 - 项目类别:
Standard Grant
Periodic Polymeric Materials: Deaf and Blind Structures
周期性高分子材料:聋盲结构
- 批准号:
0804449 - 财政年份:2008
- 资助金额:
$ 36万 - 项目类别:
Continuing Grant
Collaborative Research: Rational Design Of Polymeric Microtruss Structures As Highly-Ordered Multifunctional Coatings
合作研究:合理设计聚合物微桁架结构作为高阶多功能涂层
- 批准号:
0556211 - 财政年份:2006
- 资助金额:
$ 36万 - 项目类别:
Standard Grant
IMR: Acquisition of Optical Instrumentation for Determination of the Band Structure of Photonic and Phononic Crystals and Education of Students
IMR:购买光学仪器来确定光子和声子晶体的能带结构以及学生教育
- 批准号:
0414974 - 财政年份:2004
- 资助金额:
$ 36万 - 项目类别:
Standard Grant
Development of Novel Properties in Block Copolymer Systems
嵌段共聚物体系新性能的开发
- 批准号:
9807591 - 财政年份:1998
- 资助金额:
$ 36万 - 项目类别:
Continuing Grant
U.S.-France Cooperative Research: Control of Orientation ofLiquid Crystalline Polymers and Block Copolymers by Substrates and Applied Fields
美法合作研究:通过基材和应用领域控制液晶聚合物和嵌段共聚物的取向
- 批准号:
9726544 - 财政年份:1998
- 资助金额:
$ 36万 - 项目类别:
Standard Grant
Novel Properties of Liquid Crystal/Coil Diblock Copolymers via Tandem Interactions
液晶/线圈二嵌段共聚物通过串联相互作用的新特性
- 批准号:
9705271 - 财政年份:1997
- 资助金额:
$ 36万 - 项目类别:
Standard Grant
Ultrastructural Properties of Polymers
聚合物的超微结构性质
- 批准号:
9214853 - 财政年份:1993
- 资助金额:
$ 36万 - 项目类别:
Continuing Grant
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CAREER: CAS: Structured Assemblies of Block Copolymers and Macrocycles with the Novel Halogen Bond
职业:CAS:具有新型卤素键的嵌段共聚物和大环化合物的结构化组装体
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