showing 32 related works from this author
α-Aminophosphonates, Phosphinates, and Phosphine Oxides as Extraction and Precipitation Agents for Rare Earth Metals, Thorium, and Uranium : A Review
2022
α-Aminophosphonates, -phosphinates, and -phosphine oxides are a group of organophosphorus compounds that were investigated as extraction agents for rare earth (RE) metals and actinoids for the first time in the 1960s. However, more systematic investigations of their extraction properties towards REs and actinoids were not started until the 2010s. Indeed, recent studies have shown that these α-amino-functionalized compounds can outperform the commercial organophosphorus extraction agents in RE separations. They have also proven to be very efficient extraction and precipitation agents for recovering Th and U from RE concentrates. These actinoids coexist with REs in some of the commercially im…
Orgaaniset ja metallo-orgaaniset epälineaariset optiset materiaalit
2017
Tässä tutkielmassa on perehdytty kirjallisuudessa raportoituihin orgaanisiin ja metallo-orgaanisiin epälineaarisiin optisiin (NLO) materiaaleihin sekä tutkittu mahdollisuutta valmistaa niitä yksinkertaisista orgaanisista molekyyleistä. Työn kirjallisessa osassa luodaan lyhyt katsaus NLO-teoriaan sekä käydään läpi orgaanisten ja metallo-orgaanisten NLO-yhdisteiden lisäksi erilaisia toisen harmonisen säteilyn (SHG) mittaustekniikoita sekä erilaisia kiteytystekniikoita. Kokeellisessa osuudessa on valmistettu polaarisista molekyyleistä heikoilla vuorovaikutuksilla sitoutuneita yhdisteitä, joista osalla on havaittu olevan SHG-ominaisuuksia.
Three-Dimensional Printing of Nonlinear Optical Lenses.
2018
In the current paper, a series of nonlinear optical (NLO) active devices was prepared by utilizing stereolithographic three-dimensional printing technique. Microcrystalline NLO active component, urea, or potassium dihydrogen phosphate was dispersed in a simple photopolymerizable polyacrylate-based resin and used as the printing material to fabricate highly efficient transparent NLO lenses. The nonlinear activity of the printed lenses was confirmed by second-harmonic generation measurements using a femtosecond laser-pumped optical parametric amplifier operating at a wavelength of 1195 nm. The three-dimensional printing provides a simple method to utilize a range of NLO active compounds witho…
Gold Nanoparticles on 3D-Printed Filters : From Waste to Catalysts
2019
Three-dimensionally printed solid but highly porous polyamide-12 (PA12) plate-like filters were used as selective adsorbents for capturing tetrachloroaurate from acidic solutions and leachates to prepare PA12–Au composite catalysts. The polyamide-adsorbed tetrachloroaurate can be readily reduced to gold nanoparticles by using sodium borohydride, ascorbic acid, hydrogen peroxide, UV light, or by heating. All reduction methods led to polyamide-anchored nanoparticles with an even size distribution and high dispersion. The particle sizes were somewhat dependent on the reduction method, but the average diameters were typically about 20 nm. Particle sizes were determined by using a combination of…
Nonlinear optical properties of diaromatic stilbene, butadiene and thiophene derivatives
2021
Series of highly polar stilbene (1a–e), diphenylbutadiene (2a–c) and phenylethenylthiophene (3a–c) derivatives were prepared via Horner–Wadsworth–Emmons method with a view to produce new and efficient materials for second harmonic generation (SHG) in the solid-state. The single-crystal X-ray structures of compounds 1–3 reveal extensive polymorphism and a peculiar photodimerization of the 2-chloro-3,4-dimethoxy-4′-nitrostilbene derivative 1a to afford two polymorphs of tetra-aryl cyclobutane 4. The stilbene congeners 2-chloro-3,4-dimethoxy-4′-nitrostilbene (1a·non-centro), 5-bromo-2-hydroxy-3-nitro-4′-nitrostilbene (1b) and 4-dimethylamino-4′-nitrostilbene (1e), as well as 4′-fluoro-4′′-nitr…
Reactivity of 4-Aminopyridine with Halogens and Interhalogens : Weak Interactions Supported Networks of 4-Aminopyridine and 4-Aminopyridinium
2019
The reaction of 4-aminopyridine (4-AP) with ICl in a 1:1 molar ratio in CH2Cl2 produced the expected charge-transfer complex [4-NH2-1λ4-C5H4N-1-ICl] (1·ICl) and the ionic species [(4-NH2-1λ4-C5H4N)2-1μ-I+][Cl–] (2·Cl–) in a 2:1 relation, as indicated by 1H NMR spectroscopy in solution. In contrast, only the ionic compound [(4-NH2-1λ4-C5H4N)2-1μ-I+][IBr2–] (2·IBr2–) was observed in the analogous reaction with IBr. The reaction between 4-AP and I2 in a 1:1 molar ratio also afforded two components, one of which was identified as the congeneric cation in [(4-NH2-1λ4-C5H4N)2-1μ-I+][I7–] (2·I7–) that contains a polyiodide anion as a result of transformation in a 1:2 molar ratio between the starti…
Preparation of Highly Porous Carbonous Electrodes by Selective Laser Sintering
2019
Selective laser sintering (SLS) 3D printing was utilized to fabricate highly porous carbonous electrodes. The electrodes were prepared by using a mixture of fine graphite powder and either polyamide-12, polystyrene, or polyurethane polymer powder as SLS printing material. During the printing process the graphite powder was dispersed uniformly on the supporting polymer matrix. Graphite’s concentration in the mixture was varied between 5 and 40 wt % to find the correlation between the carbon content and conductivity. The graphite concentration, polymer matrix, and printing conditions all had an impact on the final conductivity. Due to the SLS printing technique, all the 3D printed electrodes …
CCDC 1893195: Experimental Crystal Structure Determination
2019
Related Article: Esa Kukkonen, Henri Malinen, Matti Haukka, Jari Konu|2019|Cryst.Growth Des.|19|2434|doi:10.1021/acs.cgd.9b00119
CCDC 1893202: Experimental Crystal Structure Determination
2019
Related Article: Esa Kukkonen, Henri Malinen, Matti Haukka, Jari Konu|2019|Cryst.Growth Des.|19|2434|doi:10.1021/acs.cgd.9b00119
CCDC 1893197: Experimental Crystal Structure Determination
2019
Related Article: Esa Kukkonen, Henri Malinen, Matti Haukka, Jari Konu|2019|Cryst.Growth Des.|19|2434|doi:10.1021/acs.cgd.9b00119
CCDC 1893201: Experimental Crystal Structure Determination
2019
Related Article: Esa Kukkonen, Henri Malinen, Matti Haukka, Jari Konu|2019|Cryst.Growth Des.|19|2434|doi:10.1021/acs.cgd.9b00119
CCDC 1893191: Experimental Crystal Structure Determination
2019
Related Article: Esa Kukkonen, Henri Malinen, Matti Haukka, Jari Konu|2019|Cryst.Growth Des.|19|2434|doi:10.1021/acs.cgd.9b00119
CCDC 2058508: Experimental Crystal Structure Determination
2021
Related Article: Esa Kukkonen, Elmeri Lahtinen, Pasi Myllyperkiö, Matti Haukka, Jari Konu|2021|New J.Chem.|45|6640|doi:10.1039/D1NJ00456E
CCDC 2058507: Experimental Crystal Structure Determination
2021
Related Article: Esa Kukkonen, Elmeri Lahtinen, Pasi Myllyperkiö, Matti Haukka, Jari Konu|2021|New J.Chem.|45|6640|doi:10.1039/D1NJ00456E
CCDC 1893200: Experimental Crystal Structure Determination
2019
Related Article: Esa Kukkonen, Henri Malinen, Matti Haukka, Jari Konu|2019|Cryst.Growth Des.|19|2434|doi:10.1021/acs.cgd.9b00119
CCDC 2058513: Experimental Crystal Structure Determination
2021
Related Article: Esa Kukkonen, Elmeri Lahtinen, Pasi Myllyperkiö, Matti Haukka, Jari Konu|2021|New J.Chem.|45|6640|doi:10.1039/D1NJ00456E
CCDC 1893196: Experimental Crystal Structure Determination
2019
Related Article: Esa Kukkonen, Henri Malinen, Matti Haukka, Jari Konu|2019|Cryst.Growth Des.|19|2434|doi:10.1021/acs.cgd.9b00119
CCDC 2058519: Experimental Crystal Structure Determination
2021
Related Article: Esa Kukkonen, Elmeri Lahtinen, Pasi Myllyperkiö, Matti Haukka, Jari Konu|2021|New J.Chem.|45|6640|doi:10.1039/D1NJ00456E
CCDC 2058512: Experimental Crystal Structure Determination
2021
Related Article: Esa Kukkonen, Elmeri Lahtinen, Pasi Myllyperkiö, Matti Haukka, Jari Konu|2021|New J.Chem.|45|6640|doi:10.1039/D1NJ00456E
CCDC 2058515: Experimental Crystal Structure Determination
2021
Related Article: Esa Kukkonen, Elmeri Lahtinen, Pasi Myllyperkiö, Matti Haukka, Jari Konu|2021|New J.Chem.|45|6640|doi:10.1039/D1NJ00456E
CCDC 1893198: Experimental Crystal Structure Determination
2019
Related Article: Esa Kukkonen, Henri Malinen, Matti Haukka, Jari Konu|2019|Cryst.Growth Des.|19|2434|doi:10.1021/acs.cgd.9b00119
CCDC 1893192: Experimental Crystal Structure Determination
2019
Related Article: Esa Kukkonen, Henri Malinen, Matti Haukka, Jari Konu|2019|Cryst.Growth Des.|19|2434|doi:10.1021/acs.cgd.9b00119
CCDC 1893199: Experimental Crystal Structure Determination
2019
Related Article: Esa Kukkonen, Henri Malinen, Matti Haukka, Jari Konu|2019|Cryst.Growth Des.|19|2434|doi:10.1021/acs.cgd.9b00119
CCDC 2058511: Experimental Crystal Structure Determination
2021
Related Article: Esa Kukkonen, Elmeri Lahtinen, Pasi Myllyperkiö, Matti Haukka, Jari Konu|2021|New J.Chem.|45|6640|doi:10.1039/D1NJ00456E
CCDC 2058516: Experimental Crystal Structure Determination
2021
Related Article: Esa Kukkonen, Elmeri Lahtinen, Pasi Myllyperkiö, Matti Haukka, Jari Konu|2021|New J.Chem.|45|6640|doi:10.1039/D1NJ00456E
CCDC 1893194: Experimental Crystal Structure Determination
2019
Related Article: Esa Kukkonen, Henri Malinen, Matti Haukka, Jari Konu|2019|Cryst.Growth Des.|19|2434|doi:10.1021/acs.cgd.9b00119
CCDC 2058518: Experimental Crystal Structure Determination
2021
Related Article: Esa Kukkonen, Elmeri Lahtinen, Pasi Myllyperkiö, Matti Haukka, Jari Konu|2021|New J.Chem.|45|6640|doi:10.1039/D1NJ00456E
CCDC 2058509: Experimental Crystal Structure Determination
2021
Related Article: Esa Kukkonen, Elmeri Lahtinen, Pasi Myllyperkiö, Matti Haukka, Jari Konu|2021|New J.Chem.|45|6640|doi:10.1039/D1NJ00456E
CCDC 2058514: Experimental Crystal Structure Determination
2021
Related Article: Esa Kukkonen, Elmeri Lahtinen, Pasi Myllyperkiö, Matti Haukka, Jari Konu|2021|New J.Chem.|45|6640|doi:10.1039/D1NJ00456E
CCDC 1893193: Experimental Crystal Structure Determination
2019
Related Article: Esa Kukkonen, Henri Malinen, Matti Haukka, Jari Konu|2019|Cryst.Growth Des.|19|2434|doi:10.1021/acs.cgd.9b00119
CCDC 2058517: Experimental Crystal Structure Determination
2021
Related Article: Esa Kukkonen, Elmeri Lahtinen, Pasi Myllyperkiö, Matti Haukka, Jari Konu|2021|New J.Chem.|45|6640|doi:10.1039/D1NJ00456E
CCDC 2058510: Experimental Crystal Structure Determination
2021
Related Article: Esa Kukkonen, Elmeri Lahtinen, Pasi Myllyperkiö, Matti Haukka, Jari Konu|2021|New J.Chem.|45|6640|doi:10.1039/D1NJ00456E