Supramolecular structures of uracil-functionalized PEG with multi-diamidopyridine POSS through complementary hydrogen bonding interactions
作者:Jui-Hsu Wang、Oleksii Altukhov、Chih-Chia Cheng、Feng-Chih Chang、Shiao-Wei Kuo
DOI:10.1039/c3sm27968e
日期:——
In this study, we synthesized (i) a multi-diamidopyridine-functionalized polyhedral oligomeric silsesquioxane (MD-POSS) through nucleophilic substitution and click 1,3-cycloaddition reactions and (ii) both mono- and bis-uracil (U)-functionalized poly(ethylene glycol) derivatives (U–PEG and U–PEG–U, respectively) through Michael additions of U to acryloyl-functionalized PEG oligomers. Transmission electron microscopy (TEM) and dynamic light scattering (DLS) revealed that supramolecular structures self-assembled from mixtures of MD-POSS and U–PEG and from MD-POSS and U–PEG–U. Fourier transform infrared (FTIR) and nuclear magnetic resonance (NMR) spectroscopy confirmed the presence of multiple hydrogen bonding interactions between the diaminopyridine groups of MD-POSS and the U groups of U–PEG and U–PEG–U. Because of these strong reversible intermolecular multiple hydrogen bonds, the POSS-based polymer-like supramolecular materials exhibited improved thermal properties upon increasing the MD-POSS content.
[EN] DIACETYLENIC MATERIALS FOR SENSING APPLICATIONS<br/>[FR] MATIERES DIACETYLINIQUES POUR DES APPLICATIONS DE DETECTION
申请人:3M INNOVATIVE PROPERTIES CO
公开号:WO2004060852A1
公开(公告)日:2004-07-22
Diacetylenic materials for the colorimetric detection of an analyte or exposure to certain environmental factors are disclosed as well as the polymerization reaction products of these diacetylenic compounds.
Diacetylenic materials for the colorimetric detection of an analyte or exposure to certain environmental factors are disclosed as well as the polymerization reaction products of these diacetylenic compounds.
Diacetylenic materials for the colorimetric detection of an analyte or exposure to certain environmental factors are disclosed as well as the polymerization reaction products of these diacetylenic compounds.
Carbon Nanodots (CNDs) were employed as building blocks for crafting optical communicating assemblies. This approach relies on the selective functionalization of CNDs with clickable moieties and their subsequent controlled interconnection. This work provides new insights on the link between molecular and nanoscale events, paving the way to develop selective and addressable CNDs that can act as modular