1,3-Diindolylureas and 1,3-Diindolylthioureas: Anion Complexation Studies in Solution and the Solid State

2008 ◽  
Vol 14 (33) ◽  
pp. 10236-10243 ◽  
Author(s):  
Claudia Caltagirone ◽  
Jennifer R. Hiscock ◽  
Michael B. Hursthouse ◽  
Mark E. Light ◽  
Philip A. Gale
Keyword(s):  
Solid State ◽  
Anion Complexation ◽  
Complexation Studies

scholarly journals Complexation studies of chiral cyclohexylhemicucurbit[n]uril to metalloporphyrins in the solid state

2019 ◽  
Vol 75 (a2) ◽  
pp. e533-e533
Author(s):  
Khai-Nghi Truong ◽  
Lukáš Ustrnul ◽  
Sandra Kaabel ◽  
Riina Aav ◽  
Kari Rissanen
Keyword(s):  
Solid State ◽  
Complexation Studies

Anion complexation of a pentafluorophenyl-substituted tripodal urea receptor in solution and the solid state: selectivity toward phosphate

2009 ◽  
pp. 4160 ◽  
Author(s):  
I. Ravikumar ◽  
P. S. Lakshminarayanan ◽  
M. Arunachalam ◽  
E. Suresh ◽  
Pradyut Ghosh
Keyword(s):  
Solid State ◽  
Anion Complexation ◽  
State Selectivity

scholarly journals Anion complexation, transport and structural studies of a series of bis-methylurea compounds

2015 ◽  
Vol 44 (5) ◽  
pp. 2138-2149 ◽  
Author(s):  
Martina Olivari ◽  
Riccardo Montis ◽  
Louise E. Karagiannidis ◽  
Peter N. Horton ◽  
Lucy K. Mapp ◽  
...  
Keyword(s):  
Solid State ◽  
Lipid Membrane ◽  
Structural Studies ◽  
New Family ◽  
Anion Complexation

A new family of bis-methylureas have been synthesised and their ability to bind anions both in solution and in the solid state and to transport them through lipid membrane have been studied.

scholarly journals Anion Complexation Studies of 3-Nitrophenyl-Substituted Tripodal Thiourea Receptor: A Naked-Eye Detection of Sulfate via Fluoride Displacement Assay

ACS Omega ◽  
2017 ◽  
Vol 2 (12) ◽  
pp. 9057-9066 ◽  
Author(s):  
Maryam Emami Khansari ◽  
Mohammad H. Hasan ◽  
Corey R. Johnson ◽  
Nya A. Williams ◽  
Bryan M. Wong ◽  
...  
Keyword(s):  
Eye Detection ◽  
Naked Eye ◽  
Anion Complexation ◽  
Complexation Studies ◽  
Displacement Assay ◽  
Naked Eye Detection

Anion Complexation Properties of Thiophene-2,4- and -2,5-biscarboxamides

2004 ◽  
Vol 69 (6) ◽  
pp. 1301-1308 ◽  
Author(s):  
Philip A. Gale ◽  
Michael B. Hursthouse ◽  
Mark E. Light ◽  
Colin N. Warriner
Keyword(s):  
Crystal Structure ◽  
Solid State ◽  
Water Solution ◽  
Anion Receptors ◽  
Fluoride Complex ◽  
Anion Complexation

Thiophene-2,4- and -2,5-biscarboxamides have been synthesised and shown to act as anion receptors in DMSO-d6/water solution. The crystal structure of the fluoride complex of a N,N'-diphenylthiophene-2,5-biscarboxamide derivative has been solved and reveals the involvement of the thiophene CH protons in anion complexation in the solid state.

Preparation of Thin Cadmium Telluride Samples for Electron Microscope Studies

1974 ◽  
Vol 32 ◽  
pp. 548-549
Author(s):  
T. J. Magee ◽  
J. Peng ◽  
J. Bean
Keyword(s):  
Electron Microscope ◽  
Sulfuric Acid ◽  
Solid State ◽  
Sample Preparation ◽  
Cadmium Telluride ◽  
Potassium Dichromate ◽  
Optical Components ◽  
The Past ◽  
Solid State Devices

Cadmium telluride has become increasingly important in a number of technological applications, particularly in the area of laser-optical components and solid state devices, Microstructural characterizations of the material have in the past been somewhat limited because of the lack of suitable sample preparation and thinning techniques. Utilizing a modified jet thinning apparatus and a potassium dichromate-sulfuric acid thinning solution, a procedure has now been developed for obtaining thin contamination-free samples for TEM examination.

The Collagenic Molecular Structural Unit of Solid State Complexes

1971 ◽  
Vol 29 ◽  
pp. 478-479
Author(s):  
Kenneth M. Richter ◽  
John A. Schilling
Keyword(s):  
Molecular Weight ◽  
Solid State ◽  
Structural Unit ◽  
X Ray Diffraction ◽  
X Ray ◽  
Naoh Treatment

The structural unit of solid state collagen complexes has been reported by Porter and Vanamee via EM and by Cowan, North and Randall via x-ray diffraction to be an ellipsoidal unit of 210-270 A. length by 50-100 A. diameter. It subsequently was independently demonstrated by us in dog tendon, dermis, and induced complexes. Its detailed morphologic, dimensional and molecular weight (MW) aspects have now been determined. It is pear-shaped in long profile with m diameters of 57 and 108 A. and m length of 263 A. (Fig. 1, tendon, KMnO4 fixation, Na-tungstate; Fig. 2a, schematic of unit in long, C, and x-sectional profiles of its thin, xB, and bulbous, xA portions; Fig. 2b, tendon essentially unmodified by ether and 0.4 N NaOH treatment, Na-tungstate). The unit consists of a uniquely coild cable, c, of ṁ 22.9 A. diameter and length of 2580-3316 A. The cable consists of three 2nd-strands, s, each of m 10.6 A.

Structure-property relations of liquid crystalline polymers

1987 ◽  
Vol 45 ◽  
pp. 460-463
Author(s):  
Linda C. Sawyer
Keyword(s):  
Solid State ◽  
Liquid Crystalline ◽  
Structural Model ◽  
Crystalline Polymer ◽  
Liquid Crystalline Polymers ◽  
Mechanical Anisotropy ◽  
Structure Property ◽  
Preparation Methods ◽  
Crystalline Polymers ◽  
Extended Chain

Recent liquid crystalline polymer (LCP) research has sought to define structure-property relationships of these complex new materials. The two major types of LCPs, thermotropic and lyotropic LCPs, both exhibit effects of process history on the microstructure frozen into the solid state. The high mechanical anisotropy of the molecules favors formation of complex structures. Microscopy has been used to develop an understanding of these microstructures and to describe them in a fundamental structural model. Preparation methods used include microtomy, etching, fracture and sonication for study by optical and electron microscopy techniques, which have been described for polymers. The model accounts for the macrostructures and microstructures observed in highly oriented fibers and films.Rod-like liquid crystalline polymers produce oriented materials because they have extended chain structures in the solid state. These polymers have found application as high modulus fibers and films with unique properties due to the formation of ordered solutions (lyotropic) or melts (thermotropic) which transform easily into highly oriented, extended chain structures in the solid state.

Microstructural Variations in Melt-Spun Rapidly Solidified Ribbons

1985 ◽  
Vol 43 ◽  
pp. 54-55
Author(s):  
L. A. Bendersky ◽  
W. J. Boettinger
Keyword(s):  
Solid State ◽  
Processing Parameters ◽  
Heat Extraction ◽  
Solid State Reactions ◽  
Careful Examination ◽  
Ion Milling ◽  
Melt Spun ◽  
Wheel Side ◽  
Rapidly Solidified ◽  
Heat Extraction Rate

Rapid solidification produces a wide variety of sub-micron scale microstructure. Generally, the microstructure depends on the imposed melt undercooling and heat extraction rate. The microstructure can vary strongly not only due to processing parameters changes but also during the process itself, as a result of recalescence. Hence, careful examination of different locations in rapidly solidified products should be performed. Additionally, post-solidification solid-state reactions can alter the microstructure.The objective of the present work is to demonstrate the strong microstructural changes in different regions of melt-spun ribbon for three different alloys. The locations of the analyzed structures were near the wheel side (W) and near the center (C) of the ribbons. The TEM specimens were prepared by selective electropolishing or ion milling.

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