scholarly journals Supramolecular self-assembly of tin(iv) porphyrin channels stabilizing single-file chains of water molecules

CrystEngComm ◽  
2005 ◽  
Vol 7 (68) ◽  
pp. 417 ◽  
Author(s):  
Hee-Joon Kim ◽  
Hwa Jin Jo ◽  
Jaheon Kim ◽  
Soo-Young Kim ◽  
Dongwoo Kim ◽  
...  
Keyword(s):  
Self Assembly ◽  
Water Molecules ◽  
Single File

scholarly journals Substrate wettability guided oriented self assembly of Janus particles

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Meneka Banik ◽  
Shaili Sett ◽  
Chirodeep Bakli ◽  
Arup Kumar Raychaudhuri ◽  
Suman Chakraborty ◽  
...  
Keyword(s):  
Self Assembly ◽  
Janus Particles ◽  
Water Molecules ◽  
Functional Coatings ◽  
Hexagonal Close Packed ◽  
Local Densities ◽  
Inhomogeneous Properties ◽  
Metal Polymer ◽  
Specific Orientation

AbstractSelf-assembly of Janus particles with spatial inhomogeneous properties is of fundamental importance in diverse areas of sciences and has been extensively observed as a favorably functionalized fluidic interface or in a dilute solution. Interestingly, the unique and non-trivial role of surface wettability on oriented self-assembly of Janus particles has remained largely unexplored. Here, the exclusive role of substrate wettability in directing the orientation of amphiphilic metal-polymer Bifacial spherical Janus particles, obtained by topo-selective metal deposition on colloidal Polymestyere (PS) particles, is explored by drop casting a dilute dispersion of the Janus colloids. While all particles orient with their polymeric (hydrophobic) and metallic (hydrophilic) sides facing upwards on hydrophilic and hydrophobic substrates respectively, they exhibit random orientation on a neutral substrate. The substrate wettability guided orientation of the Janus particles is captured using molecular dynamic simulation, which highlights that the arrangement of water molecules and their local densities near the substrate guide the specific orientation. Finally, it is shown that by spin coating it becomes possible to create a hexagonal close-packed array of the Janus colloids with specific orientation on differential wettability substrates. The results reported here open up new possibilities of substrate-wettability driven functional coatings of Janus particles, which has hitherto remained unexplored.

Renal Reabsorption of Water. Are there Pores in Proximal Tubule Cells?

Physiology ◽  
1988 ◽  
Vol 3 (2) ◽  
pp. 61-65 ◽  
Author(s):  
G Whittembury ◽  
P Carpi-Medina
Keyword(s):  
Proximal Tubule ◽  
Water Movement ◽  
Water Molecules ◽  
Toad Urinary Bladder ◽  
Sulfhydryl Reagents ◽  
Proximal Tubule Cells ◽  
Single File ◽  
Tubule Cells ◽  
Large Water ◽  
Human Red Cells

Transcellular water movement occurs mainly through water channels where water molecules move in single file. These channels, which explain the large water permeability of the proximal tubule cells, are closed by mercurial sulfhydryl reagents. There are similarities between these channels and those of human red cells and those that appear in distal nephron segments and toad urinary bladder after antidiuretic hormone stimulation.

A heterometallic Cd/Ag/Se complex incorporating 3-ferrocenyl-5-(2-pyridyl)pyrazolato (fcpp) ligands: synthesis and structure of [Cd2{Ag(SePh)}2(μ3-OH2)2(μ2,η3-fcpp)4]·2C3H6O

2019 ◽  
Vol 74 (6) ◽  
pp. 527-531
Author(s):  
Zhe Qian ◽  
Ai-Quan Jia ◽  
Feng Hu ◽  
Cai-Xia Zhang ◽  
Qian-Feng Zhang
Keyword(s):  
Self Assembly ◽  
Selenium Atom ◽  
Water Molecules ◽  
Heterometallic Complex ◽  
Coordination Environment ◽  
Water Solvent ◽  
Acetone Water ◽  
Distorted Octahedral ◽  
Distorted Tetrahedral Coordination ◽  
Distorted Octahedral Coordination Environment

AbstractA self-assembly reaction of Cd(NO3)2 · 4H2O, 3-ferrocenyl-5-(2-pyridyl)-pyrazole (Hfcpp), [Ag(SePh)]n, and Et3N in a mixed acetone-water solvent resulted in the formation of a heterometallic complex [Cd2{Ag(SePh)}2 (μ3-OH2)2(μ2,η3-fcpp)4] · 2C3H6O (1) with a phenylselenolate ligand. The two cadmium and two silver centers are linked by four [μ2,η3-fcpp]− ligands and two μ3-OH2 water molecules. Each Cd atom is in a slightly distorted octahedral coordination environment, while each Ag atom shows a distorted tetrahedral coordination geometry, which is composed of two pyrazolyl nitrogen atoms, one selenium atom, and one oxygen atom.

Transport Properties of Single-File Water Molecules inside a Carbon Nanotube Biomimicking Water Channel

ACS Nano ◽  
2009 ◽  
Vol 4 (1) ◽  
pp. 205-210 ◽  
Author(s):  
Guangchao Zuo ◽  
Rong Shen ◽  
Shaojie Ma ◽  
Wanlin Guo
Keyword(s):  
Carbon Nanotube ◽  
Transport Properties ◽  
Water Channel ◽  
Water Molecules ◽  
Single File

scholarly journals Mobility of Single-File Water Molecules in Aquaporins

2015 ◽  
Vol 108 (2) ◽  
pp. 182a ◽  
Author(s):  
Andreas Horner ◽  
Florian Zocher ◽  
Johannes Preiner ◽  
Nicole Ollinger ◽  
Christine Siligan ◽  
...  
Keyword(s):  
Water Molecules ◽  
Single File
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