Smart Glasses: Molecular Programming of Dynamic Responses in Organosilica Sol-Gels
Smart Glasses: Molecular Programming of Dynamic Responses in Organosilica Sol-Gels
复制标题
智能眼镜：有机二氧化硅溶胶-凝胶动态响应的分子编程
DOI：
--
复制
发表时间：
2003
期刊：
影响因子：
--
通讯作者：
B. Dave
中科院分区：
文献类型：
--
作者：
M. Rao;Joel L. Gray;B. Dave
报道了一类由有机改性的烷氧基硅烷前驱体制备的新型溶胶-凝胶衍生材料的刺激响应行为。从明智选择的分子前体开始，溶胶-凝胶反应产生固态玻璃-一种机械上坚固而有弹性的材料-当受到不同的物理化学刺激时能够产生动态响应。这些材料代表了刺激响应性二氧化硅基溶胶-凝胶的初始实例，其表现出相对于包括温度、pH、盐和溶剂在内的若干环境变量的体积变化和主动机械响应。这些玻璃在二氧化硅基结构中结合了疏水性、亲水性和离子部分的最佳平衡，因此能够显示相对于所施加的物理化学刺激的体积变化。
The stimuli-responsive behavior of a new class of sol-gel—derived materials prepared from organically-modified alkoxysilane precursors is reported. Starting from judiciously selected molecular precursors, the sol-gel reaction yields a solid state glass—a mechanically robust yet elastic material—that is capable of generating dynamic responses when subjected to different physicochemical stimuli. These materials represent an initial example of stimuli-responsive silica-based sol-gels that exhibit bulk volume changes and active mechanical responses with respect to several environmental variables including temperature, pH, salt, and solvents. These glasses incorporate an optimum balance of hydrophobic, hydrophilic, and ionic moieties in the silica-based structure and are therefore capable of showing bulk volume changes with respect to applied physicochemical stimuli.