作者:Yiwen Li、Kai Guo、Hao Su、Xiaopeng Li、Xueyan Feng、Zhao Wang、Wei Zhang、Sunsheng Zhu、Chrys Wesdemiotis、Stephen Z. D. Cheng、Wen-Bin Zhang
DOI:10.1039/c3sc52718b
日期:——
The convenient synthesis of nano-building blocks with strategically placed functional groups constitutes a fundamental challenge in nano-science. Here, we describe the facile preparation of a library of mono- and di-functional (containing three isomers) polyhedral oligomeric silsesquioxane (POSS) building blocks with different symmetries (C3v, C2v, and D3d) using thiol-ene chemistry. The method is
Superlattice Engineering with Chemically Precise Molecular Building Blocks
作者:Xiao-Yun Yan、Qing-Yun Guo、Xian-You Liu、Yicong Wang、Jing Wang、Zebin Su、Jiahao Huang、Fenggang Bian、Haixin Lin、Mingjun Huang、Zhiwei Lin、Tong Liu、Yuchu Liu、Stephen Z. D. Cheng
DOI:10.1021/jacs.1c09831
日期:2021.12.29
emergence. In the current work, we demonstrate that properly designed molecular systems could generate a spectrum of unconventional superlattices. Four categories of giant molecules are presented. We systematically explore the lattice-forming principles in unary and binary systems, unveiling how molecular stoichiometry, topology, and size differences impact the mesoatoms and further toward their superlattices
Pathway toward Large Two-Dimensional Hexagonally Patterned Colloidal Nanosheets in Solution
作者:Bo Ni、Mingjun Huang、Ziran Chen、Yingchao Chen、Chih-Hao Hsu、Yiwen Li、Darrin Pochan、Wen-Bin Zhang、Stephen Z. D. Cheng、Xue-Hui Dong
DOI:10.1021/ja511694a
日期:2015.2.4
We report the solution self-assembly of an ABC block terpolymer consisting of a polystyrene-block-poly(ethylene oxide) (PS-b-PEO) diblock copolymer tail tethered to a fluorinated polyhedral oligomeric silsesquioxane (FPOSS) cage in 1,4-dioxane/water. With increasing water content, abundant unconventional morphologies, including circular cylinders, two-dimensional hexagonally patterned colloidal nanosheets, and laterally patterned vesicles, are sequentially observed. The formation of toroids is dominated by two competing free energies: the end-cap energy of cylinders and the bending energy to form the circular structures. Incorporating the superhydrophobic FPOSS cages enhances the end-cap energy and promotes toroid formation. Lateral aggregation and fusion of the cylinders results in primitive nanosheets that are stabilized by the thicker rims to partially release the rim-cap energy. Rearrangement of the parallel-aligned FPOSS cylindrical cores generates hexagonally patterned nanosheets. Further increasing the water content induces the formation of vesicles with nanopatterned walls.
Unexpected Elasticity in Assemblies of Glassy Supra‐Nanoparticle Clusters
作者:Jia‐Fu Yin、Zhao Zheng、Junsheng Yang、Yuchu Liu、Linkun Cai、Qing‐Yun Guo、Mu Li、Xinpei Li、Tao Lin Sun、Geng Xin Liu、Caili Huang、Stephen Z. D. Cheng、Thomas P. Russell、Panchao Yin
DOI:10.1002/anie.202013361
日期:2021.2.23
remains unclear. Here, supra‐nanoparticleclusters (SNPCs) with precise structures are developed as model systems to elucidate the unexpected elastic behaviors. SNPCs are prepared by coordination‐driven assembly of polyhedral oligomeric silsesquioxane (POSS) with metal‐organic polyhedron (MOP). Due to the disparity in sizes, the POSS‐MOP assemblies, like their classic nanoparticles counterparts, ordering