Nanostructured Polyelectrolyte Brushes

纳米结构聚电解质刷

基本信息

项目摘要

This proposal describes an international collaborative program focused on the study of polyelectrolyte brushes that involves the research groups of Christopher Ober (Cornell University) and Jürgen Rühe (University of Freiburg). Poly(electrolyte) (PEL) brushes are of particular interest because the presence of charges and the geometric constraints arising both from the thin film format as well as from the surface attachment of each chain, lead to a rich physical chemistry of such systems. The loss of entropy induced by chain stretching generates a very strong pull on the bonds through which the chains are linked to the surface. It has recently been reported, that the pull can be especially in osmotic brushes so very strong that breaking of chemical bonds of the polymer chain occurs (entropic death of the chains). We will explore this rather unusual case of mechanochemistry, where the origin of the mechanical forces leading to rupture of chemical bonds has no external, but an internal origin. We plan to elucidate this by generating patterned PEL brushes of precisely tailored composition with structure sizes from infinite (i.e. homogenous thin film) down to feature sizes whose footprints are comparable to the swollen layer thickness (i.e. < 100 nm). In the former case the brushes represent essentially two 2D- structures as the layer can only swell by stretching away from the surface while the latter allows a more 3D-swelling. We plan to address the following key questions: How does the swelling of the PEL brushes scale with size of the nanostructure and how does confinement of polyelectrolyte brushes in nanostructures influence chain stability and the interaction with ions in the surrounding medium as a function of environment, segment/charge distribution and charge state? To study this, we plan to grow polyelectrolyte brushes from poly(styrene sulfonate), quaternized poly(vinyl pyridine) and poly(2-methacryloxyethyl trimethylammonium chloride) and then create nanostructured brushes using benign orthogonal patterning. We will characterize the brushes using synchrotron-based methods such as X-ray reflectometry, grazing incidence small angle X-ray scattering (GISAXS) studies and near edge X-ray absorption fine structure (NEXAFS). In addition both XPS and multiple angle ellipsometry will provide complementary information, as will more routine methods such as ATR-FTIR and SFM. As a result we hope to obtain a deeper understanding of the complex interplay between confinement, swelling and stability of PEL brushes and obtain new insights into the complex physicochemistry of such systems.
该提案描述了一个专注于聚电解质电刷研究的国际合作项目,该项目由Christopher Ober(康奈尔大学)和Jürgen Rühe(弗莱堡大学)的研究小组参与。聚(电解液)(PEL)刷子特别令人感兴趣,因为电荷的存在以及薄膜形式和每个链的表面附着所产生的几何约束,导致了此类体系的丰富的物理化学。链拉伸引起的熵损失会对链连接到表面的键产生非常强大的拉力。最近有报道称,渗透刷子中的拉力特别强,以至于聚合物链的化学键发生断裂(链的熵死亡)。我们将探索这一相当不寻常的机械力化学案例,在这种情况下,导致化学键断裂的机械力的来源没有外部原因,而是内部来源。我们计划通过生成精确定制的图案化PEL刷子来阐明这一点,其结构尺寸从无限大(即均匀薄膜)到特征尺寸,其足迹与膨胀的层厚度(即&lt;100 nm)相当。在前一种情况下,笔刷基本上代表两个2D结构,因为层只能通过拉伸远离表面来膨胀,而后者允许更多的3D膨胀。我们计划解决以下关键问题:PEL刷子的膨胀如何与纳米结构的尺寸成比例,以及聚电解质刷子在纳米结构中的限制如何影响链的稳定性以及作为环境、链段/电荷分布和电荷状态的函数与周围介质中的离子的相互作用?为了研究这一点,我们计划以聚(苯乙烯磺酸盐)、季节化的聚(乙烯基吡啶)和聚(2-甲基丙烯氧基乙基三甲基氯化铵)为原料生长聚电解质刷,然后使用良性的正交图案来创建纳米结构的刷。我们将使用基于同步加速器的方法来表征刷子,例如X射线反射仪、掠入射小角X射线散射(GISAXS)研究和近边X射线吸收精细结构(NEXAFS)。此外,XPS和多角度椭偏测量法以及ATR-FTIR和SFM等常规方法都将提供补充信息。因此,我们希望对PEL刷子的限制、膨胀和稳定性之间的复杂相互作用有更深入的了解,并对此类体系的复杂物理化学有新的见解。

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)
Reduced Lateral Confinement and Its Effect on Stability in Patterned Strong Polyelectrolyte Brushes.
  • DOI:
    10.1021/acs.langmuir.7b00165
  • 发表时间:
    2017-03
  • 期刊:
  • 影响因子:
    0
  • 作者:
    Wei‐Liang Chen;M. Menzel;Tsukasa Watanabe;O. Prucker;J. Rühe;C. Ober
  • 通讯作者:
    Wei‐Liang Chen;M. Menzel;Tsukasa Watanabe;O. Prucker;J. Rühe;C. Ober
Morphology of Nanostructured Polymer Brushes Dependent on Production and Treatment
  • DOI:
    10.1021/acs.macromol.7b00714
  • 发表时间:
    2017-06-27
  • 期刊:
  • 影响因子:
    5.5
  • 作者:
    Chen, Wei-Liang;Menzel, Matthias;Ruehe, Juergen
  • 通讯作者:
    Ruehe, Juergen
{{ item.title }}
{{ item.translation_title }}
  • DOI:
    {{ item.doi }}
  • 发表时间:
    {{ item.publish_year }}
  • 期刊:
  • 影响因子:
    {{ item.factor }}
  • 作者:
    {{ item.authors }}
  • 通讯作者:
    {{ item.author }}

数据更新时间:{{ journalArticles.updateTime }}

{{ item.title }}
  • 作者:
    {{ item.author }}

数据更新时间:{{ monograph.updateTime }}

{{ item.title }}
  • 作者:
    {{ item.author }}

数据更新时间:{{ sciAawards.updateTime }}

{{ item.title }}
  • 作者:
    {{ item.author }}

数据更新时间:{{ conferencePapers.updateTime }}

{{ item.title }}
  • 作者:
    {{ item.author }}

数据更新时间:{{ patent.updateTime }}

Professor Dr. Jürgen Rühe其他文献

Professor Dr. Jürgen Rühe的其他文献

{{ item.title }}
{{ item.translation_title }}
  • DOI:
    {{ item.doi }}
  • 发表时间:
    {{ item.publish_year }}
  • 期刊:
  • 影响因子:
    {{ item.factor }}
  • 作者:
    {{ item.authors }}
  • 通讯作者:
    {{ item.author }}

{{ truncateString('Professor Dr. Jürgen Rühe', 18)}}的其他基金

Dynamic behavior of water droplets on flexible, adaptive and switchable surfaces generated using surface attached polymer networks and brushes
使用表面附着的聚合物网络和刷子生成水滴在灵活、自适应和可切换表面上的动态行为
  • 批准号:
    422793161
  • 财政年份:
    2019
  • 资助金额:
    --
  • 项目类别:
    Priority Programmes
Push, Push, Push – Cooperative Actuators and Actuators Fields by Direct Writing Pro-cesses
推,推,推 â 协作执行器和直接写入过程的执行器字段
  • 批准号:
    424615605
  • 财政年份:
    2019
  • 资助金额:
    --
  • 项目类别:
    Priority Programmes
Development of a miniaturized analysis platform for quantitative and time-resolved high throughput-analysis of signaling kinetics in cancer cells
开发用于癌细胞信号动力学定量和时间分辨高通量分析的小型分析平台
  • 批准号:
    290023083
  • 财政年份:
    2016
  • 资助金额:
    --
  • 项目类别:
    Research Grants
Molecular analysis of mechanobiological reactions of human mesenchymal stem cells on biomechanical extracelluar cues induced by magnetically actuated microstructures - µMSC
磁驱动微结构诱导的人间充质干细胞对生物力学细胞外信号的机械生物学反应的分子分析 - µMSC
  • 批准号:
    254846193
  • 财政年份:
    2015
  • 资助金额:
    --
  • 项目类别:
    Research Grants
Durchstimmbare Mikrooptik mit strukturierten Elastomersystemen
具有结构化弹性体系统的可调谐微光学器件
  • 批准号:
    75282105
  • 财政年份:
    2008
  • 资助金额:
    --
  • 项目类别:
    Priority Programmes
Verminderung der Thrombogenität von Herzunterstützungssystemen (VAD) durch gezielte Oberflächenmodifizierung der eingesetzten Materialien
通过对所用材料进行有针对性的表面改性,减少心脏支持系统 (VAD) 的血栓形成
  • 批准号:
    82900181
  • 财政年份:
    2008
  • 资助金额:
    --
  • 项目类别:
    Research Grants
Entwicklung einer Biochip-Technologieplattform für simultane Genexpressions- und Mutationsanalyse
开发同时进行基因表达和突变分析的生物芯片技术平台
  • 批准号:
    25023014
  • 财政年份:
    2007
  • 资助金额:
    --
  • 项目类别:
    Research Grants
Benetzungseigenschaften von Pflanzenoberflächen
植物表面的润湿特性
  • 批准号:
    5365219
  • 财政年份:
    2002
  • 资助金额:
    --
  • 项目类别:
    Priority Programmes
Verbesserung des Adhäsionsverhaltens von biologischen Zellen auf Herzklappen-Bioprothesen durch Oberflächenmodifizierung mit Hilfe von molekular dünnen Polymerschichten
通过使用分子薄聚合物层进行表面改性,改善生物细胞在心脏瓣膜生物假体上的粘附行为
  • 批准号:
    5371792
  • 财政年份:
    2002
  • 资助金额:
    --
  • 项目类别:
    Research Grants
Kontrolle des Benetzungsverhaltens von Polymeren auf oberflächenverankerten Polymermonolagen
表面锚定聚合物单层上聚合物润湿行为的控制
  • 批准号:
    5107960
  • 财政年份:
    1998
  • 资助金额:
    --
  • 项目类别:
    Priority Programmes

相似海外基金

Studies of Catch and Release Behavior of Polyelectrolyte Brushes
聚电解质刷捕获和释放行为的研究
  • 批准号:
    2304838
  • 财政年份:
    2023
  • 资助金额:
    --
  • 项目类别:
    Standard Grant
Nanoparticle Interactions and Nanoscale Transport in Polyelectrolyte Brushes
聚电解质刷中的纳米粒子相互作用和纳米级传输
  • 批准号:
    2034122
  • 财政年份:
    2021
  • 资助金额:
    --
  • 项目类别:
    Standard Grant
Polyelectrolyte brushes: Stabilization through Controlled Charge Placement
聚电解质刷:通过控制电荷放置实现稳定
  • 批准号:
    2003588
  • 财政年份:
    2020
  • 资助金额:
    --
  • 项目类别:
    Standard Grant
Anormalous small angle X-ray scattering to promote the ionic dissolution of polyelectrolyte brushes.
异常小角X射线散射促进聚电解质刷的离子溶解。
  • 批准号:
    15K17914
  • 财政年份:
    2015
  • 资助金额:
    --
  • 项目类别:
    Grant-in-Aid for Young Scientists (B)
Cooperation with Germany: Studies of Polyelectrolyte Brushes in Confined Environments
与德国合作:聚电解质刷在密闭环境中的研究
  • 批准号:
    1306467
  • 财政年份:
    2013
  • 资助金额:
    --
  • 项目类别:
    Continuing Grant
Mechanotransduction in Polyelectrolyte Brushes - Towards Mechanically Addressable Smart Surfaces
聚电解质刷中的力传导——迈向机械可寻址智能表面
  • 批准号:
    158439160
  • 财政年份:
    2009
  • 资助金额:
    --
  • 项目类别:
    Research Fellowships
Quantitative Theory for Polyelectrolyte and Liquid-Crystalline Brushes
聚电解质和液晶刷的定量理论
  • 批准号:
    EP/F068425/1
  • 财政年份:
    2009
  • 资助金额:
    --
  • 项目类别:
    Research Grant
Synthesis, Structure and Swelling of Polyelectrolyte Brushes
聚电解质刷的合成、结构及溶胀
  • 批准号:
    0840249
  • 财政年份:
    2008
  • 资助金额:
    --
  • 项目类别:
    Standard Grant
Polyelectrolyte brushes: Understanding Multivalent Effects on Structure and Properties
聚电解质刷:了解对结构和性能的多价影响
  • 批准号:
    45564250
  • 财政年份:
    2007
  • 资助金额:
    --
  • 项目类别:
    Research Grants
Materials World Network: Polyelectrolyte Brushes: Understanding Multi-Valent Effects on Structure and Properties
材料世界网络:聚电解质刷:了解多价对结构和性能的影响
  • 批准号:
    0710521
  • 财政年份:
    2007
  • 资助金额:
    --
  • 项目类别:
    Continuing Grant
{{ showInfoDetail.title }}

作者:{{ showInfoDetail.author }}

知道了