Department of Chemistry, Fudan University, 220 Handan Road, Shanghai, 200433 PR China.
Adv Mater. 2013 Oct 4;25(37):5304-13. doi: 10.1002/adma.201301914. Epub 2013 Jul 12.
Since their discovery, stimuli-responsive organogels have garnered considerable and increasing attention from a broad range of research fields. In consideration of an one-dimensional ordered relay in anisotropic phase, the assembled gel networks can amplify various properties of the functional moieties possessed by the gelator molecules. Recently, substantial efforts have been focused on the development of facile, straightforward, and low-cost molecular recognition approaches by using nanostructured gel matrices as visual sensing platforms. In this research news, the recent progresses in macroscopic or visual-size molecular recognition for a number of homologues, isomers, and anions, as well as extremely challenging chiral enantiomers, using polymer and molecular gels are reviewed. Several strategies--including guest molecular competition, hydrogen-bonding blocking, and metal-coordination--for visual discrimination are included. Finally, the future trends and potential application in facile visual-size molecular recognition based on organogel matrices are highlighted.
自发现以来，刺激响应型有机凝胶已经引起了广泛的研究领域的极大关注。考虑到各向异性相中一维有序的接力，组装的凝胶网络可以放大凝胶剂分子所具有的功能部分的各种性质。最近，人们已经将大量的精力集中在开发简便、直接和低成本的分子识别方法上，方法是使用纳米结构的凝胶基质作为可视化传感平台。在本研究新闻中，综述了使用聚合物和分子凝胶对许多同系物、异构体和阴离子，以及极具挑战性的手性对映异构体进行宏观或可视化尺寸分子识别的最新进展。包括客体分子竞争、氢键阻断和金属配位等几种可视化区分策略。最后，强调了基于有机凝胶基质的简便可视化尺寸分子识别的未来趋势和潜在应用。
