thermo-responsive nanogels were facilely fabricated via ternary cross-linking copolymerization of ionicliquid (IL)-based monomers and cross-linker in methanol. To achieve the thermo-responsive performance of nanogels, monomers with hydroxyl or carboxyl group which can contribute to hydrogen (H)-bonding interaction is the key point of this strategy. The thermo-responsive behavior of poly(ionicliquid)s (PIL)-based
successfully applied to asymmetric transfer hydrogenation of cyclic imines. Polymeric catalysts prepared from amphiphilic achiral monomers have high catalytic activity in the reaction and can be used both in organic solvents and water to give chiral cyclic amines with a high level of enantioselectivity (up to 98% ee). The asymmetricreaction allows for reuse of the heterogeneouscatalyst without any loss
A facile one-step synthesis to cross-linked polymeric nanoparticles as highly active and selective catalysts for cycloaddition of CO2 to epoxides
作者:Yubing Xiong、Hong Wang、Rongmin Wang、Yunfeng Yan、Bo Zheng、Yunpu Wang
DOI:10.1039/b926901k
日期:——
A very convenient one-step synthesis to cross-linked polymeric nanoparticles by conventional radical copolymerization without the addition of stabilizers or surfactants was explored. Moreover, these nanoparticles exhibited excellent stability, activity and selectivity in the cycloaddition reaction of CO2 to epoxides and could be separated from the products easily and reused.
Soluble tetrahedral compounds for use in electroluminescent devices
申请人:——
公开号:US20030055278A1
公开(公告)日:2003-03-20
Electroluminescent compounds, devices and methods for making the foregoing are disclosed, which employ a novel topological strategy for designing amorphous molecular solids suitable for forming thin films in optoelectronic devices. In this approach chromophores are attached to a tetrahdral point of convergence.
Phosphonium hydrogels for controlled release of ionic cargo
作者:Tristan D. Harrison、Paul J. Ragogna、Elizabeth R. Gillies
DOI:10.1039/c8cc05083j
日期:——
Hydrogels containing phosphonium cations were synthesized and demonstrated to electrostatically bind and release anionic drug molecules depending on their structures.