Solution processing of chalcogenide materials using thiol–amine “alkahest” solvent systems

2017 ◽  
Vol 53 (36) ◽  
pp. 4888-4902 ◽  
Author(s):  
Carrie L. McCarthy ◽  
Richard L. Brutchey
Keyword(s):  
Thin Films ◽  
Inorganic Materials ◽  
Solution Processing ◽  
Solvent Systems ◽  
Chalcogenide Materials

We highlight recent studies utilizing thiol/amine mixtures to dissolve bulk inorganic materials for facile solution processing of functional thin films.

Importance of soft solution processing for advanced inorganic materials

1998 ◽  
Vol 13 (4) ◽  
pp. 796-802 ◽  
Author(s):  
Masahiro Yoshimura
Keyword(s):  
Thin Films ◽  
Aqueous Solutions ◽  
Ceramic Materials ◽  
Inorganic Materials ◽  
Advanced Materials ◽  
Solution Processing ◽  
Environmental Features ◽  
The Earth ◽  
One Step ◽  
Important Processing

Based upon the analysis of materials cycling and processing on the earth, a thermodynamic concept for energetical and environmental problems has been proposed. It concludes that solution processing using aqueous solutions should be the most important processing even for advanced materials. According to this concept, energetical and environmental features of soft solution processing (SSP) are discussed in general, using also some particular examples, such as BaTiO3. Applications of the SSP are shown with special emphasis on hydrothermal and/or electrochemical synthesis of thin films and integration issues. Soft solution processing allows one to fabricate in aqueous solutions shaped/sized/oriented ceramics in only one step, without excess energies for firing/sintering or melting and without expensive equipment, providing an environmentally friendly route for the preparation of advanced ceramic materials.

scholarly journals Thin films of copper phthalocyanine deposited by solution processing methods

2020 ◽  
Vol 38 (1) ◽  
pp. 79-90
Author(s):  
Hubert Gojzewski ◽  
Fatemeh Ghani ◽  
Mirosław Szybowicz
Keyword(s):  
Thin Films ◽  
Copper Phthalocyanine ◽  
Substrate Surface ◽  
Spray Coating ◽  
Solution Concentration ◽  
Dip Coating ◽  
Solution Processing ◽  
Ambient Conditions ◽  
Processing Methods ◽  
Main Technique

AbstractIn this work, we show and discuss the surface structure picture of copper phthalocyanine (CuPc) thin films deposited from trifluoroacetic acid (TFA) solvent onto silicon substrates at ambient conditions by four solution processing methods, namely drop-casting, dip-coating, spin-casting and spray-coating. The CuPc films were studied by AFM, as the main technique, and complemented by micro-Raman spectroscopy. Essentially, such thin films consist of CuPc molecular nanoribbons of a fixed ~1 nm thickness. CuPc molecules are arranged in an in-plane direction and formed in stacks under a defined tilt angle with respect to the substrate surface (monolayer) or underlying CuPc layer (multilayer). The film morphology takes various forms depending on the solution concentration, number of layers, and the deposition method. For instance, the morphology varies from very wide (~600 nm) but flat (~1 nm) ribbons for films prepared by dip-coating to crystallized rod-like features (multi-layered ribbons) when obtained by spray-coating. The factors studied in this paper should be taken into consideration in designing and controlling the criteria for rigorous CuPc film architecture.

Bandgap-tunable double-perovskite thin films by solution processing

2019 ◽  
Vol 28 ◽  
pp. 25-30 ◽  
Author(s):  
Yuan Liu ◽  
Li Zhang ◽  
Min Wang ◽  
Yujia Zhong ◽  
Meirong Huang ◽  
...  
Keyword(s):  
Thin Films ◽  
Double Perovskite ◽  
Solution Processing

scholarly journals Fabrication of graphene oxide/montmorillonite nanocomposite flexible thin films with improved gas-barrier properties

RSC Advances ◽  
2018 ◽  
Vol 8 (68) ◽  
pp. 39083-39089 ◽  
Author(s):  
Se Jung Kim ◽  
Tan young Kim ◽  
Byung Hyun Kang ◽  
Gun-Hwan Lee ◽  
Byeong-Kwon Ju
Keyword(s):  
Thin Films ◽  
Graphene Oxide ◽  
Barrier Properties ◽  
Inorganic Materials ◽  
Gas Barrier ◽  
Gas Barrier Properties

Nanocomposites are potential substitutes for inorganic materials in fabricating flexible gas-barrier thin films.

Solution processing of highly conductive ruthenium and ruthenium oxide thin films from ruthenium–amine complexes

2015 ◽  
Vol 3 (17) ◽  
pp. 4490-4499 ◽  
Author(s):  
Yoshitaka Murakami ◽  
Jinwang Li ◽  
Daisuke Hirose ◽  
Shinji Kohara ◽  
Tatsuya Shimoda
Keyword(s):  
Thin Films ◽  
Solution Process ◽  
Ruthenium Oxide ◽  
Simple Solution ◽  
Solution Processing ◽  
Oxide Thin Films ◽  
Amine Complexes ◽  
Conductive Thin Films

Designing of ruthenium–amine complexes leads to preparation of highly conductive thin films of ruthenium (20–40 nm thick) and ruthenium oxide (50–90 nm thick) by a simple solution process.

DEFINITIVE IDENTIFICATION OF MICROQUANTITIES OF RADIOACTIVE STEROIDS BY RECRYSTALLIZATION TO CONSTANT SPECIFIC ACTIVITY

1965 ◽  
Vol 49 (2_Suppl) ◽  
pp. S7-S77 ◽  
Author(s):  
Leonard R. Axelrod ◽  
Charles Matthijssen ◽  
Joseph W. Goldzieher ◽  
Jean E. Pulliam
Keyword(s):  
Liquid Scintillation ◽  
Specific Activity ◽  
Inorganic Materials ◽  
Dual Isotope ◽  
Advantages And Disadvantages ◽  
Yield Values ◽  
Solvent Systems ◽  
Identification Techniques ◽  
Constant Specific Activity

ABSTRACT Studies of steroid metabolism using isotopically-labeled compounds at physiological levels present unique problems in the identification of the metabolites and in the demonstration of their radiochemical purity. The submicrogram quantities of material available preclude the use of classical identification techniques. The character of the evidence obtained, the advantages and disadvantages of chromatographic and countercurrent distribution methods are discussed. Crystallization to constant specific activity is a recognized method for demonstrating that a substance is not radiochemically impure. Its parameters have never been accurately defined. Its true power is achieved only when it is preceded by extensive purification of the material to be characterized. In this way, the unknown material is first categorized by its migration rate in various solvent systems, and then by its crystalline identity with the carrier compound. The likelihood of two dissimilar steroids being both isopolar and isomorphic is held to be remote. Liquid scintillation spectrometry and gravimetry are the techniques used for the determination of constant specific activity. This method for measurement of radioactivity is extremely flexible, sensitive, and lends itself to dual-isotope experiments. Gravimetry under standardized conditions is suitably precise and much more generally applicable than spectroscopic quantitation. The parameters of the technique of rapid, forced microcrystallization are analyzed. In particular, the problem of contamination of crystals is analyzed in detail, and it is pointed out that classical concepts of purification by crystallization, developed chiefly in connection with ionic inorganic materials, must be modified when applied to nonionic steroid compounds. A mathematical analysis of the errors inherent in this technique indicates that 3 successive crystallizations of a pure radioactive compound should yield values for the specific activity which are within ± 5 % of the average of the 3 values.

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