نتایج جستجو برای: silicon halide

تعداد نتایج: 88191  

Journal: :Biochemistry 2005
Lixia Tang Daniel E Torres Pazmiño Marco W Fraaije René M de Jong Bauke W Dijkstra Dick B Janssen

Halohydrin dehalogenase (HheC) from Agrobacterium radiobacter AD1 catalyzes the dehalogenation of vicinal haloalcohols by an intramolecular substitution reaction, resulting in the formation of the corresponding epoxide, a halide ion, and a proton. Halide release is rate-limiting during the catalytic cycle of the conversion of (R)-p-nitro-2-bromo-1-phenylethanol by the enzyme. The recent elucida...

Journal: :Infection and immunity 1979
S J Klebanoff

Estradiol 17 beta prevented the fall in the microbicidal activity of the myeloperoxidase-H2O2-halide system induced by high H2O2 concentrations. In contrast, when the H2O2 (and halide) concentrations were low the myeloperoxidase-H2O2-halide antimicrobial system was inhibited by estradiol. These properties of estradiol 17 beta were shared by estradiol 17 alpha, estrone, estriol, ethinyl estradio...

Journal: :Applied Physics Letters 2023

Halide perovskites are extremely interesting semiconductors for innovation in optoelectronics and photovoltaics. In particular, they efficient emitters of both incoherent coherent light and, therefore, interest as active materials lasers, amplification systems (resonators waveguides), other photonic devices. Here, we present a set experimental results concerning nonlinear effects the radiative ...

Journal: :JPhys energy 2023

Abstract In many emerging solar cell technologies, it is a significant challenge to extract electronic properties of materials and interfaces inside working device from experimental data. cases, approaches frequently used in mature technologies such as crystalline silicon are inapplicable they require material parameters be known a-priori which rarely the case for novel materials. Based on this...

Journal: :Opto-Electronic Advances 2023

Halide perovskite light-emitting electrochemical cells are a novel type of the optoelectronic devices that differs from diodes by simple monolayered architecture. Here, we develop cell both for light emission and detection, where active layer consists composite material made halide microcrystals, polymer support matrix, added mobile ions. The CsPbBr3:PEO:LiTFSI composition, emitting ...

2017
Taiyang Zhang M. Ibrahim Dar Ge Li Feng Xu Nanjie Guo Michael Grätzel Yixin Zhao

Among various all-inorganic halide perovskites exhibiting better stability than organic-inorganic halide perovskites, a-CsPbI3with themost suitable band gap for tandem solar cell application faces an issue of phase instability under ambient conditions. We discovered that a small amount of two-dimensional (2D) EDAPbI4 perovskite containing the ethylenediamine (EDA) cation stabilizes the a-CsPbI3...

Journal: :Analytical chemistry 2014
Tom Vander Hoogerstraete Steven Jamar Sil Wellens Koen Binnemans

The determination and quantification of halide impurities in ionic liquids is highly important because halide ions can significantly influence the chemical and physical properties of ionic liquids. The use of impure ionic liquids in fundamental studies on solvent extraction or catalytic reactions can lead to incorrect experimental data. The detection of halide ions in solution by total reflecti...

2008
Richard J. Worhatch HyunJeong Kim Ian P. Swainson André L. Yonkeu Simon J. L. Billinge

The local structures of the inorganic component of selected organic–inorganic perovskites (OIPs) are studied by analyzing the X-ray pair distribution function. Whereas the long-range structure of each perovskite is the untilted Pm3jm phase, all the OIPs showed significant internal distortion of the octahedra. Varying the halide has a significant impact on the lattice constant. There is evidence...

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