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Abbas Vali Hori P. Sarker Hyung-Woo Jee Attila Kormányos Farinaz Firouzan Prof. Noseung Myung Prof. Ki-Jung Paeng Prof. Muhammad N. Huda Prof. Csaba Janáky Prof. Krishnan Rajeshwar 《Chemphyschem》2019,20(20):2635-2646
Two polymorphs of AgVO3, namely the α- and β- forms, were prepared and their physical, structural, optical, electrochemical, and photoelectrochemical characteristics were compared using a battery of experimental and theoretical tools. A two-step method, previously developed in the our laboratory for the electrodeposition of inorganic semiconductor films, was applied to the electrosynthesis of silver vanadate (AgVO3) films on transparent, conducting oxide surfaces. In the first step, silver was cathodically deposited from a non-aqueous bath containing silver nitrate. In the second step, the silver film was anodically stripped in an aqueous medium containing ammonium metavanadate. The anodically generated silver ions at the interface underwent a precipitation reaction with the vanadate species to generate the desired product in situ. Each of these steps were mechanistically corroborated via the use of electrochemical quartz crystal microgravimetry, used in conjunction with voltammetry and coulometry. As-deposited films were crystalline and showed p-type semiconductor behavior. Theoretical insights are provided for the electronic origin of the α→β phase transformation in AgVO3 and the disparate optical band gaps of the two polymorphs. Finally, implications for the application of this material in solar cells are provided. 相似文献
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Farinaz Mortaheb Katrin Oberhofer Johann Riemensberger Florian Ristow Reinhard Kienberger Ulrich Heiz Hristo Iglev Aras Kartouzian 《Angewandte Chemie (Weinheim an der Bergstrasse, Germany)》2019,131(44):15832-15836
The interest in enantioseparation and enantiopurification of chiral molecules has been drastically increasing over the past decades, since these are important steps in various disciplines such as pharmaceutical industry, asymmetric catalysis, and chiral sensing. By exposing racemic samples of BINOL (1,1′‐bi‐2‐naphthol) coated onto achiral glass substrates to circularly polarized light, we unambiguously demonstrate that by controlling the handedness of circularly polarized light, preferential desorption of enantiomers can be achieved. There are currently no mechanisms known that would describe this phenomenon. Our observation together with a simplified phenomenological model suggests that the process of laser desorption needs to be further developed and the contribution of quantum mechanical processes should be revisited to account for these data. Asymmetric laser desorption provides us with a contamination‐free technique for the enantioenrichment of chiral compounds. 相似文献
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Ghalamkari Safoura Khosravian Farinaz Mianesaz Hamidreza Kazemi Mohammad Behjati Mohaddeseh Hakimian Sayyed Mohammadreza Salehi Mansoor 《Applied biochemistry and biotechnology》2019,187(3):975-983
Applied Biochemistry and Biotechnology - One of the most common somatic mutations in breast cancer is found in PIK3CA with a prevalence rate of 18–45%. Different variants of this gene are... 相似文献
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