Nanometer-Scale Precision Polymer Patterning of PDMS: Multiscale Insights into Patterning Efficiency Using Alkyldiynamines
Nanometer-Scale Precision Polymer Patterning of PDMS: Multiscale Insights into Patterning Efficiency Using Alkyldiynamines
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PDMS 的纳米级精密聚合物图案化：使用烷基二胺对图案化效率的多尺度洞察
DOI：
10.1021/acsami.2c04534
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发表时间：
2022
影响因子：
9.5
通讯作者：
Claridge, Shelley A.
中科院分区：
文献类型：
--
作者：
Shi, Anni;Singh, Anamika;Williams, Laura O.;Arango, Juan C.;Claridge, Shelley A.
大多数高分辨率界面图案化方法限于结晶无机界面。最近，我们已经表明，它是可能的，以产生1纳米分辨率的功能图案软材料，如聚二甲基硅氧烷（PDMS），通过创建高度结构化的条纹图案的功能烷基二乙炔的硬结晶表面上，光聚合设置的分子图案作为条纹相聚二乙炔（sPDA），然后共价转移的sPDA的PDMS。转移取决于二乙炔聚合，因此理解有效的sPDA聚合和与PDMS交联的设计原理非常重要。在这里，我们结合联合收割机单分子和荧光为基础的指标sPDA聚合和转移，首先表征sPDA聚合胺条纹相，然后开发一个概率模型，描述转移过程中的sPDA-PDMS交联反应效率和转移所需的反应次数。我们说明，转移模式的烷基胺可用于直接与烷基配体壳层和共价反应的CdSe纳米晶体的吸附与荧光染料，突出的实用程序的PDMS表面的功能图案化。
Most high-resolution interfacial patterning approaches are restricted to crystalline inorganic interfaces. Recently, we have shown that it is possible to generate 1 nm resolution functional patterns on soft materials, such as polydimethylsiloxane (PDMS), by creating highly structured striped patterns of functional alkyldiacetylenes on a hard crystalline surface, photopolymerizing to set the molecular pattern as a striped-phase polydiacetylene (sPDA), and then covalently transferring the sPDAs to PDMS. Transfer depends on the diacetylene polymerization, making it important to understand design principles for efficient sPDA polymerization and cross-linking to PDMS. Here, we combine single-molecule and fluorescence-based metrics for sPDA polymerization and transfer, first to characterize sPDA polymerization of amine striped phases, and then to develop a probabilistic model that describes the transfer process in terms of sPDA–PDMS cross-linking reaction efficiency and number of reactions required for transfer. We illustrate that transferred patterns of alkylamines can be used to direct both adsorption of CdSe nanocrystals with alkyl ligand shells and covalent reactions with fluorescent dyes, highlighting the utility of functional patterning of the PDMS surface.