Polysilsesquioxane Nanowire Networks as an "Artificial Solvent" for Reversible Operation of Photochromic Molecules.,Nano Letters

当前位置： X-MOL 学术 › Nano Lett. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Polysilsesquioxane Nanowire Networks as an "Artificial Solvent" for Reversible Operation of Photochromic Molecules.
Nano Letters ( IF 9.6 ) Pub Date : 2019-09-26 , DOI: 10.1021/acs.nanolett.9b02642
Zonglin Chu ₁ , Rafal Klajn ₁

Affiliation

Efficient isomerization of photochromic molecules often requires conformational freedom and is typically not available under solvent-free conditions. Here, we report a general methodology allowing for reversible switching of such molecules on the surfaces of solid materials. Our method is based on dispersing photochromic compounds within polysilsesquioxane nanowire networks (PNNs), which can be fabricated as transparent, highly porous, micrometer-thick layers on various substrates. We found that azobenzene switching within the PNNs proceeded unusually fast compared with the same molecules in liquid solvents. Efficient isomerization of another photochromic system, spiropyran, from a colorless to a colored form was used to create reversible images in PNN-coated glass. The coloration reaction could be induced with sunlight and is of interest for developing "smart" windows.

中文翻译：

聚倍半硅氧烷纳米线网络是光致变色分子可逆操作的“人工溶剂”。

光致变色分子的有效异构化通常需要构象自由，并且通常在无溶剂条件下不可用。在这里，我们报告了一种通用的方法，可以在固体材料的表面上进行此类分子的可逆转换。我们的方法基于将光致变色化合物分散在聚倍半硅氧烷纳米线网络（PNN）中，该网络可以在各种基板上制成透明，高度多孔，微米级的层。我们发现，与液体溶剂中的相同分子相比，PNN中的偶氮苯转换过程异常快。另一种光致变色系统螺吡喃从无色到有色形式的有效异构化用于在PNN涂层玻璃中创建可逆图像。

更新日期：2019-09-26

点击分享查看原文

点击收藏

阅读更多本刊新发论文本刊介绍/投稿指南