Local Halide Distributions in High-Speed Tabular Ag(Br,I) Emulsion Microcrystals by Cryo-FEG-AEM

2001 ◽  
Vol 7 (S2) ◽  
pp. 520-521
Author(s):  
V. Oleshko ◽  
P. Crozier ◽  
L. Garone ◽  
J. Freedman
Keyword(s):  
Solid State ◽  
High Speed ◽  
Information Technologies ◽  
Chemical Properties ◽  
Imaging Systems ◽  
Physical And Chemical Properties ◽  
Electronic Imaging ◽  
Physical And Chemical ◽  
Made In ◽  
And Chemical Properties

The unique physical and chemical properties of AgX (X=C1, Br, I) emulsion microcrystals (optical, solid state, transport, chemical and spectral sensitizations and development) account for their use as basic light quanta detectors in practical photography for over 150 years. in spite of the advances made in other recording systems, especially in electronic imaging, contemporary AgX-based photographic materials are still superior in sensitivity and resolution. Although the replacement of AgX-based imaging systems by electronic imaging was already predicted 20 years ago, their current world manufacturing level is now larger than ever. However, in order to be successfully incorporated into digital and hybrid information technologies for the new Millennium, AgX-based photographic materials should further improve their quantum efficiency and image quality. in order to achieve these objectives, the key components should be intentionally modified with a focus primarily at the nanostructural level.

Impact of solid-state photochemical [2+2] cycloaddition on coordination polymers for diverse applications

2020 ◽  
Vol 49 (28) ◽  
pp. 9556-9563 ◽  
Author(s):  
Samim Khan ◽  
Basudeb Dutta ◽  
Mohammad Hedayetullah Mir
Keyword(s):  
Solid State ◽  
Coordination Polymers ◽  
Chemical Properties ◽  
Physical And Chemical Properties ◽  
Physical And Chemical ◽  
Fine Tune ◽  
And Chemical Properties

This Frontier article highlights the advancement of [2+2] photocycloaddition reactions within coordination polymers to fine tune their diverse physical and chemical properties.

Sila-Pharmaka, 31. Mitt. [1] Synthese, Struktur und pharmakologische Eigenschaften von Diphenyl(2-piperidinoethoxymethyl)silanol und seinem Kohlenstoff-Analogon / Sila-Pharmaca, 31 th Communication [1] Synthesis, Structure, and Pharmacological Properties of Diphenyl(2-piperidinoethoxymethyl)silanol and its Carbon Analogue

1983 ◽  
Vol 38 (6) ◽  
pp. 738-746 ◽  
Author(s):  
Reinhold Tacke ◽  
Hartwig Lange ◽  
William S. Sheldrick ◽  
Günter Lambrecht ◽  
Ulrich Moser ◽  
...  
Keyword(s):  
Solid State ◽  
Hydrogen Bonds ◽  
Chemical Properties ◽  
Pharmacological Properties ◽  
Physical And Chemical Properties ◽  
Antimuscarinic Agents ◽  
Physical And Chemical ◽  
And Chemical Properties

Abstract In the course of systematic investigations on sila-substituted parasympatholytics the diphenyl(2-aminoethoxymethyl)silanols 3b and 4b (and its carbon analogue 4a) were synthesized and characterized by their physical and chemical properties. In the solid state 4a and 4b form strong O-H---N hydrogen bonds, which are intramolecular (4a) and intermolecular (4b), respectively. 4a and 4b were found to be weak antimuscarinic agents (4b >4a) and strong papaverine-like spasmolytics (4a ≈4b).

scholarly journals Compounds of Complex Halo and Pseudohalo Acids of the Group II B Metals, Part I Etherate, Pyridine and Aniline Compounds of Zn(II)

1979 ◽  
Vol 34 (8) ◽  
pp. 1101-1106 ◽  
Author(s):  
A. G. Galinos ◽  
J. K . Kouinis ◽  
P. V. Ioannou ◽  
Th. F . Zafiropoulos ◽  
S. P. Perlepes
Keyword(s):  
Solid State ◽  
Ir Spectra ◽  
Chemical Properties ◽  
Physical And Chemical Properties ◽  
Uv And Ir Spectra ◽  
Group Ii ◽  
Physical And Chemical ◽  
And Chemical Properties

The preparation of sixteen new etherate, pyridine and aniline compounds of complex halo and pseudohalo acids of Zn(II) is reported.The study of some physical and chemical properties as well as the UV and IR spectra of these compounds are discussed. Tetrahedral structures are proposed for all compounds in the solid state

Theoretical and Spectroscopic Characterization of API-Related Azoles in Solution and in Solid State

2020 ◽  
Vol 26 (38) ◽  
pp. 4847-4857
Author(s):  
Marta Marín-Luna ◽  
Rosa M. Claramunt ◽  
José Elguero ◽  
Ibon Alkorta
Keyword(s):  
Solid State ◽  
Crystal Packing ◽  
Chemical Properties ◽  
Spectroscopic Characterization ◽  
Complete Characterization ◽  
Theoretical Studies ◽  
Physical And Chemical Properties ◽  
Physical And Chemical ◽  
And Chemical Properties

Azoles are a family of five-membered azacyclic compounds with relevant biological and pharmacological activity. Different subclasses of azoles are defined depending on the atomic arrangement and the number of nitrogen atoms present in the ring: pyrazoles, indazoles, imidazoles, benzimidazoles, triazoles, benzotriazoles, tetrazoles and pentazoles. The complete characterization of their structure and the knowledge about their crystal packing and physical and chemical properties are of vital importance for the advancement in the design of new azole-containing drugs. In this review, we report the latest recent contributions to azole chemistry, in particular, those in which theoretical studies have been performed.

scholarly journals Modification of polyolefins by reactive extrusion methods: a comparison of melt and solid-state modifications carried out on the same equipment

2020 ◽  
Vol 1 (11-12) ◽  
pp. 21-26
Author(s):  
A. N. Zelenetsky ◽  
M. D. Sizova ◽  
V. P. Volkov ◽  
S. N. Zelenetsky ◽  
V. S. Bolduev
Keyword(s):  
Solid State ◽  
Liquid Phase ◽  
Solid Phase ◽  
Chemical Properties ◽  
Reactive Extrusion ◽  
Physical And Chemical Properties ◽  
Adhesion Properties ◽  
High Adhesion ◽  
Physical And Chemical ◽  
And Chemical Properties

The modification of polyolefi ns by polar monomers in the melt and solid state on one extruder was investigated. The features of changes in the physical and chemical properties of polyolefi ns with melt and solid modifi cations are studied.The reactivity of comonomers in liquid-phase and solid-phase modifi cation processes has been compared. The method of grafting solid modifi cation, in which pre-ozonated polyethylene is used as a copolymerization initiator, has been investigated. High adhesion properties of the copolymers were found.

scholarly journals Catechin Extracted from Uncaria gambier Roxb for Nanocatechin Production: Physical and Chemical Properties

2021 ◽  
Vol 16 (4) ◽  
pp. 393-399
Author(s):  
Yefsi Malrianti ◽  
Anwar Kasim ◽  
Alfi Asben ◽  
Edi Syafri ◽  
Gustri Yeni ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
High Speed ◽  
Chemical Properties ◽  
Spray Dryer ◽  
Physical And Chemical Properties ◽  
Rotational Angle ◽  
Degradation Temperature ◽  
Successive Extraction ◽  
Physical And Chemical ◽  
And Chemical Properties

This research reports nanoparticles or nanocatechin produced from catechin extracted from gambier and the differences between the properties of the extracted catechin and nanocatechin. The study began with the preparation of >95% pure catechin through successive extraction. The catechin obtained was converted to nanocatechin with a high-speed homogenizer on a 1% suspension of catechin in water at 12,000 rpm for 30, 45, 60, 75 or 90 minutes. Results showed average diameters of the nanocatechin 90-minute homogenized colloids were then dried with a spray dryer so physical and chemical properties could be compared with those of the raw extracted catechin. Catechin content, water content, pH, refractive index, density, molecular weight and rotational angle were unaltered. Appearance, solubility, thermal properties, highest absorbance wavelength and antioxidant activity were measured. Initial degradation temperature and antioxidant activity of nanocatechin were higher than those in the originally extracted catechin.

scholarly journals Relationship of thermodynamic data with Periodic Law

2019 ◽  
Vol 91 (6) ◽  
pp. 879-893
Author(s):  
Valery P. Vassiliev ◽  
Valery A. Lysenko ◽  
Marcelle Gaune-Escard
Keyword(s):  
Solid State ◽  
Periodic Table ◽  
Chemical Properties ◽  
Standard Entropy ◽  
Physical And Chemical Properties ◽  
Tetrad Effect ◽  
Binary Compounds ◽  
Relationship Of ◽  
Physical And Chemical ◽  
And Chemical Properties

Abstract Relationships between the various physical and chemical properties of isostructural compounds take place according to the Periodic Table that is a fundamental basis of Chemistry. The systematization of this approach, data vs. the Periodic Table, will contribute to further development of the solid state chemistry theory. The lanthanides and the actinides make up the f block of the Periodic Table. The lanthanides are the elements produced as the 4f sublevel is filled with electrons and the actinides are formed while filling the 5f sublevel. In this paper, we analyze some classes of compounds formed by the lanthanides with other elements of the Periodic Table, which can count into the thousands of binary compounds. The special place of lanthanides in the Periodic System of Elements made it possible to establish strict nonlinear relationships between the standard entropy and the lanthanide atomic number of the compounds Ln2X3 (X = O, S, Se, Te), LnN, LnB4, and LnF3 in the solid state. This relationship, based on tetrad-effect, can be applied to other physical and chemical properties of the isostructural compounds. The thermodynamic properties of actinides have been studied much less than lanthanides, but the similarity of physicochemical properties makes it possible for us to estimate, with sufficient accuracy, unexplored properties using fundamental laws. One of these laws is the tetrad-effect concept that is an effective tool to predict missing thermodynamic values for lanthanide and actinide compounds and to rationally plan experiments.

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