Pillar[5]- and pillar[6]arene-based supramolecular assemblies built by using their cavity-size-dependent host–guest interactions

2014 ◽  
Vol 50 (37) ◽  
pp. 4776-4787 ◽  
Author(s):  
T. Ogoshi ◽  
T. Yamagishi

We discuss various pillar[5]- and pillar[6]arene-based supramolecular assemblies built using their host–guest interactions.

2018 ◽  
Vol 54 (14) ◽  
pp. 1734-1737 ◽  
Author(s):  
Khaleel I. Assaf ◽  
Mohammad A. Alnajjar ◽  
Werner M. Nau

Cucurbituril-based supramolecular assemblies built by using their cavity-size-dependent host–guest interactions with an amphiphilic pyridinium-functionalized anthracene in water.


2019 ◽  
Vol 128 ◽  
pp. 105719 ◽  
Author(s):  
Kaili Ma ◽  
Kai Guo ◽  
Lulu Li ◽  
Weixin Zou ◽  
Changjin Tang ◽  
...  

2020 ◽  
Vol 44 (11) ◽  
pp. 4311-4318
Author(s):  
Weitao Xu ◽  
Xinyu Deng ◽  
Xin Xiao ◽  
Bing Bian ◽  
Qing Chen ◽  
...  

The differing cavity size of the Q[n] determines the binding interactions between the benzyl substituted 4-pyrrolidinopyridinium salt and each Q[n]. Single crystal X-ray diffraction of the guest as well as two host–guest complexes is reported.


2020 ◽  
Vol 126 ◽  
pp. 110744 ◽  
Author(s):  
Lu Ren ◽  
Yuanzhi Li ◽  
Jingtao Hou ◽  
Teng Wang ◽  
Yi Yang ◽  
...  

Author(s):  
M. A. Listvan ◽  
R. P. Andres

Knowledge of the function and structure of small metal clusters is one goal of research in catalysis. One important experimental parameter is cluster size. Ideally, one would like to produce metal clusters of regulated size in order to characterize size-dependent cluster properties.A source has been developed which is capable of producing microscopic metal clusters of controllable size (in the range 5-500 atoms) This source, the Multiple Expansion Cluster Source, with a Free Jet Deceleration Filter (MECS/FJDF) operates as follows. The bulk metal is heated in an oven to give controlled concentrations of monomer and dimer which were expanded sonically. These metal species were quenched and condensed in He and filtered to produce areosol particles of a controlled size as verified by mass spectrometer measurements. The clusters were caught on pre-mounted, clean carbon films. The grids were then transferred in air for microscopic examination. MECS/FJDF was used to produce two different sizes of silver clusters for this study: nominally Ag6 and Ag50.


Author(s):  
Lawrence W. Ortiz ◽  
Bonnie L. Isom

A procedure is described for the quantitative transfer of fibers and particulates collected on membrane filters to electron microscope (EM) grids. Various Millipore MF filters (Millipore AA, HA, GS, and VM; 0.8, 0.45, 0.22 and 0.05 μm mean pore size) have been used with success. Observed particle losses have not been size dependent and have not exceeded 10%. With fibers (glass or asbestos) as the collected media this observed loss is approximately 3%.


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