Supramolecular Assemblies of Cucurbit[10]uril Based on Outer Surface Interactions

2017 ◽  
Vol 70 (5) ◽  
pp. 637 ◽  
Author(s):  
Yu-Qing Yao ◽  
Qing Liu ◽  
Ying Huang ◽  
Qian-Jiang Zhu ◽  
Yun-Qian Zhang ◽  
...  

Using an established method, we isolated a large quantity of cucurbit[10]uril (Q[10]) and prepared Q[10]-based supramolecular assemblies via different approaches. For example, the structure-directing agent [CdCl4]2– was used or the Q[10] molecule itself acted as a self-structure-directing agent to form different Q[10]-based supramolecular assemblies through the outer surface interaction of Q[10]. Generally, the Q[10]-based supramolecular assemblies possess porous features that suggest that Q[n]-based compounds could be used to manufacture molecular sieves and sensors and applied in absorption and separation technologies.

2018 ◽  
Vol 47 (11) ◽  
pp. 3958-3964 ◽  
Author(s):  
Xiu-Du Zhang ◽  
Yue Zhao ◽  
Kai Chen ◽  
Peng Wang ◽  
Yan-Shang Kang ◽  
...  

Supramolecular assemblies formed of cucurbit[6]uril and flexible aromatic compounds were achieved via outer-surface interactions, and show selective adsorption and sensing properties.


ACS Omega ◽  
2018 ◽  
Vol 3 (6) ◽  
pp. 6665-6672 ◽  
Author(s):  
Xiao Tian ◽  
Li Xia Chen ◽  
Yu Qing Yao ◽  
Kai Chen ◽  
Min-Dong Chen ◽  
...  

Author(s):  
Ashwani Pratap ◽  
Karali Patra

Abstract This work presents an analytical cutting force modeling for micro-slot grinding. Contribution of the work lies in the consideration of both primary and secondary tool surface interactions with the work surface as compared to the previous works where only primary tool surface interaction was considered during cutting force modeling. Tool secondary surface interaction with workpiece is divided into two parts: cutting/ ploughing by abrasive grits present in exterior margin of the secondary tool surface and sliding/adhesion by abrasive grits in the inner margins of the secondary tool surface. Orthogonal cutting force model and indentation based fracture model is considered for cutting by both the abrasives of primary tool surface and the abrasives of exterior margin on the secondary surface. Asperity level sliding and adhesion model is adopted to solve the interaction between the workpiece and the interior margin abrasives of secondary tool surface. Experimental measurement of polycrystalline diamond tool surface topography is carried out and surface data is processed with image processing tools to determine the tool surface statistics viz., cutting edge density, grit height distribution and abrasive grit geometrical measures. Micro-slot grinding experiments are carried out on BK7 glass at varying feed rate and axial depths of cut to validate the simulated cutting forces. Simulated cutting forces considering both primary and secondary tool surface interactions are found to be much closer to the experimental cutting forces as compared to the simulated cutting forces considering only primary tool surface interaction.


2020 ◽  
Vol 55 (35) ◽  
pp. 16497-16509
Author(s):  
Rui Xue Cheng ◽  
Fei Yang Tian ◽  
Yun Qian Zhang ◽  
Kai Chen ◽  
Qian Jiang Zhu ◽  
...  

2015 ◽  
Vol 44 (10) ◽  
pp. 1300-1302
Author(s):  
Xiying Li ◽  
Watcharop Chaikittisilp ◽  
Zhendong Liu ◽  
Yutaka Yanaba ◽  
Takeshi Yoshikawa ◽  
...  

Nanomaterials ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 3198
Author(s):  
Syed Fakhar Alam ◽  
Min-Zy Kim ◽  
Aafaq ur Rehman ◽  
Devipriyanka Arepalli ◽  
Pankaj Sharma ◽  
...  

Two-dimensional SAPO-34 molecular sieves were synthesized by microwave hydrothermal process. The concentrations of structure directing agent (SDA), phosphoric acid, and silicon in the gel solution were varied and their effect on phase, shape, and composition of synthesized particles was studied. The synthesized particles were characterized by various techniques using SEM, XRD, BET, EDX, and NH3-TPD. Various morphologies of particles including isotropic, hyper rectangle, and nanoplates were obtained. It was found that the Si/Al ratio of the SAPO-34 particles was in a direct relationship with the density of acid sites. Moreover, the gel composition and preparation affected the chemistry of the synthesized particles. The slow addition of phosphoric acid improved the homogeneity of synthesis gel and resulted in SAPO-34 nanoplates with high density of acid sites, 3.482 mmol/g. The SAPO-34 nanoplates are expected to serve as a high performance catalyst due to the low mass transfer resistance and the high density of active sites.


2021 ◽  
Author(s):  
Jun-Xian Gou ◽  
yang luo ◽  
Xi-Nan Yang ◽  
Wei Zhang ◽  
Ji-Hong Lu ◽  
...  

Three different complexes, TMeQ[6]-TBT, Q[7]-TBT and Q[8]-TBT, are constructed by three different cucurbiturils and synthesized guest melamine-cored Schiff base (TBT) through outer-surface interaction and host-guest interaction, where TBT and TMeQ[6] form complex TMeQ[6]-TBT through outer-surface interaction, while TBT and Q[7,8] form complexs Q[7]-TBT and Q[8]-TBT through host-guest interaction., and finally, Q[7]-TBT is selected as a UV detector for the detection of precious metal Ag+. This work makes full use of the characteristics of each cucurbiturils and combines that of Schiff bases to construct a series of complexes and apply them to metal detection.


2021 ◽  
Vol 8 (4) ◽  
Author(s):  
Liang Zhou ◽  
Hongjian Li ◽  
Runlin Han

Hierarchical AlPO-34 molecular sieves microspheres were synthesized in a [BMIm]Br ionic liquid without template or complex post-treatment process. The formation mechanism of such framework structures and their morphology were investigated. [BMIm]Br was proven to serve as both solvent and sole provider of the structure directing agent. The organic amine in the compound affects the framework density of the crystals and promotes the formation of a chabazite (CHA) type framework. After ageing for 1 h the AlPO-34 microspheres are formed due to the aggregation properties of the ionic liquid. The hierarchical mirosphere has a relatively high Brunauer–Emmett–Teller surface area and a considerably uniform mesoporous channel network. The hierarchical AlPO-34 microspheres were used as absorbers of heavy metal cations and showed a higher loading capacity and distribution coefficient compared with the AlPO-34-NH.


2020 ◽  
Author(s):  
Ying Huang ◽  
Rui-Han Gao ◽  
Ming Liu ◽  
Li-Xia Chen ◽  
Xin-Long Ni ◽  
...  

Author(s):  
Ming Liu ◽  
Yang Zhou ◽  
Lixia Chen ◽  
Bing Bian ◽  
Xin Xiao ◽  
...  

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