Synthetic control of isolated, single functional groups on silica surfaces.
Synthetic control of isolated, single functional groups on silica surfaces.
复制标题
二氧化硅表面上孤立的单一官能团的合成控制。
DOI：
10.1021/la501231v
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发表时间：
2014
期刊：
影响因子：
--
通讯作者：
M. Tang
中科院分区：
文献类型：
--
作者：
Alex Dagg;Zhiyuan Huang;Monica A Marks;Dapeng Zhou;M. Chawla;M. Tang
我们报道了在不同的二氧化硅表面上均匀混合的三氯烷基硅烷中孤立的、单一的官能团的密度的控制。官能团共价键合到源自Rink树脂的硅烷上。这种环硅烷可与任何亲核试剂反应。对官能团密度的控制是通过用惰性硅烷十八烷基三氯硅烷稀释含有Rink-Silane的浸泡溶液来实现的。通过在全内反射几何构型中成像的荧光单硼-二吡咯甲烷染料的随机闪烁，证实了官能团的孤立性质。硅烷单分子膜的坚固特性允许分子物种从二氧化硅表面轻松地共价结合和裂解，以及进行一般的合成转化。这表现为一种共价连接，然后是一种萘生色团的裂解。这种低成本和可扩展的平台在传感、分子电子学、半导体加工以及催化和分子缔合动力学的基本过程研究方面具有巨大的潜力。
We report control of the density of isolated, single functional groups in homogeneously mixed trichloroalkyl silanes on various silica surfaces. The functional groups are covalently bound to a silane derived from the Rink resin. This Rink-silane is reactive to any nucleophile. Control over the density of functional groups is achieved by diluting the immersion solution containing the Rink-silane with an inert silane, octadecyltrichlorsilane. The isolated nature of the functional groups is confirmed by the stochastic blinking of fluorescent single boron-dipyrromethane dyes imaged in total internal reflection geometry. The robust character of silane monolayers allows facile covalent binding and cleavage of molecular species from silica surfaces as well as general synthetic transformations to be conducted. This is shown by the covalent attachment and then cleavage of a naphthalene chromophore. This low-cost and scalable platform has great potential for use in sensing, molecular electronics, semiconductor processing, and the investigation of fundamental processes in catalysis and the kinetics of molecular association.
影响因子：
3.9
作者：
Collman, JP;Devaraj, NK;Chidsey, CED
通讯作者：
Chidsey, CED