Hierarchical Self-Assembly Based on Surface-Confined Foldamers: A Bottom-up Approach to Nanopatterning (SURCONFOLD)

基于表面限制折叠器的分层自组装：自下而上的纳米图案化方法（SURCONFOLD）

• 批准号: 24839333
• 负责人: Professor Dr. Stefan Hecht
• 金额: --
• 依托单位: Arbeitsgruppe Organische Chemie und funktionale Materialien
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2006
• 资助国家: 德国
• 起止时间: 2005-12-31 至 2009-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/24839333?language=en
• 关键词: Hierarchical; Self; Assembly; Based; Surface

Hierarchical self-assembly is ubiquitous in Nature. It forms the basic construction technique used for the self-assembly from small proteins to multicellular organisms. It remains, however, a great challenge to create artificial nanostructures that can rival the functionality of these natural systems.Within SURCONFOLD we address this challenge by developing a truly hierarchically approach that allows for full control over the two-dimensional spatial positioning of multiple different functional groups at a variety of interfaces with 0.5-20 nm spatial resolution. To this extend we will employ surface-confined foldamers, i.e. oligomeric molecules with tunable sequence and incorporated functionality that adsorb at the liquid-solid interface and fold into a well-defined conformation. These 2D-confined objects with defined shape will subsequently self-assemble into regular 2D patterns, and time- and space-resolved characterization will be employed to unravel the complex folding and self-assembly behavior. Control over the foldamers¿ chain sequence and 2D conformation will enable the precise spatial arrangement of various different chemical entities, which can be exploited for the precise spatial arrangement of functional groups such as donor-acceptor-type chromophores, catalytically active groups or recognition sites, leading to new opportunities for optoelectronic materials, catalysts, or sensors. Our approach thus involves several hierarchical organization levels to transfer information present at the molecular level in the form of a specific monomer sequence to the overall assembled, true hybrid material, and offers thereby an exquisite control over both chemical nature and spatial arrangement of surface functionalization. Therefore, SURCONFOLD will apply a cross-disciplinary approach involving organic, polymer, and physical chemists with complementary expertise to generate new knowledge in the burgeoning area of materials and nanoscience with potential impact in sensing, optoelectronics, andcatalysis.

分层自组装在自然界中无处不在。它形成了用于从小蛋白到多细胞生物的自组装的基本构建技术。然而，要创造出能与这些自然系统的功能相媲美的人工纳米结构仍然是一个巨大的挑战。在SURCONFOLD中，我们通过开发一种真正的分层方法来解决这一挑战，该方法允许在0.5-20 nm的空间分辨率下完全控制多个不同功能基团在各种界面上的二维空间定位。为此，我们将采用表面限制的折叠体，即具有可调序列和掺入的功能性的低聚分子，其吸附在液-固界面并折叠成明确定义的构象。这些具有定义形状的2D限制对象随后将自组装成规则的2D图案，并且将采用时间和空间分辨的表征来解开复杂的折叠和自组装行为。对foldamer的控制？链序列和2D构象将使各种不同化学实体的精确空间排列成为可能，这可以用于官能团的精确空间排列，例如供体-受体型发色团、催化活性基团或识别位点，从而为光电材料、催化剂或传感器带来新的机会。因此，我们的方法涉及几个层次的组织水平，以特定单体序列的形式将分子水平上存在的信息转移到整体组装的真正的杂化材料，从而提供对表面功能化的化学性质和空间排列的精细控制。因此，SURCONFOLD将采用跨学科的方法，涉及有机，聚合物和物理化学家，具有互补的专业知识，在新兴的材料和纳米科学领域产生新的知识，对传感，光电子和催化具有潜在的影响。