Results 111 to 120 of about 21,892 (259)

Effect of Change in Ba Concentration on Crystallintiy and Dielectric Constant of the Sol-Gel Deposited Barium Strontium Titante (BST) Films on n-Type Si Wafer [PDF]

Журнал нано- та електронної фізики, 2011
Thin (Bax, Sr1 – x)TiO3 (BST) films of different chemical compositions (x = 0.3 0.5 & 0.7) were prepared by the sol-gel process using barium acetate, strontium acetate and titanium isopropoxide as metal alkoxides.
C.C. Tripathi, Chandan Sharma, S.C. Sood, Jyoti Gupta, Dhrambir Singh, Simranjeet Singh, Rohit Sharma   +6 more
doaj  

Two dimensional crystals in three dimensions: electronic decoupling of single-layered platelets in colloidal nanoparticles

, 2018
Two-dimensional crystals, single sheets of layered materials, often show distinct properties desired for optoelectronic applications, such as larger and direct band gaps, valley- and spinorbit effects. Being atomically thin, the low amount of material is
Beal, Besenbacher, Brown, Brown, Bruix, Coleman, Förster, Grønvold, Helveg, Hulliger, Jeong, Jin, Jing, Jing, Jung, Kjekshus, Kuc, Li, Liu, Luo, Mak, Miro, Miró, Nicolosi, Novoselov, O'Brien, Ogata, Ono, Sangian, Sarkar, Splendiani, Srivastava, Tan, Wang, Wang, Yang, Yim, Yim, Yoo, Zhang, Zhang, Zhu, Zibouche, Zibouche   +43 more
core   +1 more source

Notizen: Ungewöhnliche Struktureinheiten in gemischten Metall-Alkoxid-Chloriden / Unusual Structural Units in Mixed Metal Alkoxide Chlorides

Zeitschrift für Naturforschung B, 1995
As found by X-ray structure analysis (tBuO)4AlSnCl (1) is monomeric in the crystal and has a central AlO2Sn four-membered ring (Sn -O 2,153(5) Å , Al-O 1,807(7)Å). The corresponding iso-propyl derivative 2 reacts with SnCl2 to yield a coordination polymer (iPrO)4AlSn2Cl3 3 incorporating a new trigonal bipyramidal Sn2Cl3 + cation ...
Michael Veith, Holger Wolfanger, Volker Huch   +2 more
openaire   +1 more source

Nonequilibrium Laser Regulation of the Electronic Structure of the Ni‐Based Electrode for Boosting Nucleophilic Electrooxidation of Alcohols

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
This work reports an efficient, simple, low‐cost, and scalable method for overall electrode preparation. Nonequilibrium laser synthesis rapidly yields NiO nanocrystals on which a nickel oxyhydroxide (NiOOH) overlayer is grown in situ. By varying the number of laser pulses, the Ni3+/Ni2+ ratio is precisely tuned, thereby modulating the electronic ...
Shilin Fan, Rongxia Zhao, Jianghuai Yuan, Zerui Li, Haotian Yang, Haoyun Sheng, Ran Zhang, Yuxiang Liu, Lin Li, Zhu Liu   +9 more
wiley   +1 more source

MICROSTRUCTURE AND DENSIFICATION BEHAVIOUR OF SURFACE­ COATED SILICON NITRIDE POWDER

Sakarya Üniversitesi Fen Bilimleri Enstitüsü Dergisi, 2002
For better control of the mechanical properties of Si3N4 ceramics, it is necessary to generate homogeneous nıicrostructures, and for this purpose, chemical heterogeneities must be minimised, by careful control of pO\\'der processing and the subsequent ...
Zafer Tatlı
doaj   +1 more source

Copper Complexes with Arylated Triethylenetetramine Ligands: Reactivity Toward Dioxygen and Peroxides

European Journal of Inorganic Chemistry, EarlyView.
Here, we describe new Cu(I)/Cu(II) complexes based on arylated tren ligands and investigate their reactivity toward O2 and peroxides. Low‐temperature–stopped flow studies revealed the formation of transient copper–oxygen species, including superoxido, hydroperoxido, and alkylperoxido intermediates.
Chiara Eleonora Campi, Christian Würtele, Siegfried Schindler   +2 more
wiley   +1 more source

Preparation of hydroxycinnamic acid and hydroxycinnamate from herbal lignin in aprotic solvent under mild conditions

Industrial Crops and Products
Herbaceous (grass-type) lignin is characterized by a high content of hydroxycinnamic acid, which are typically ester-linked to the γ-position of the lignin side chains.
Siqi Huang, Xu Zeng, Qiqi Dai, Minjie Hou, Chuanfu Liu, Jun Xie, Wu Lan   +6 more
doaj   +1 more source

Autonomous Light Management in Flexible Photoelectrochromic Films Integrating High Performance Silicon Solar Microcells [PDF]

, 2020
Commercial smart window technologies for dynamic light and heat management in building and automotive environments traditionally rely on electrochromic (EC) materials powered by an external source.
Atwater, Harry A., Enright, Michael J., He, Junwen, Lehman, Sean E., Nicolau, Bruno G., Nuzzo, Ralph G., Petronico, Aaron, Phelan, Megan, Potter, Maggie M., Yoder, Mikayla A.   +9 more
core  

Metal‐Free and Solvent‐Free CO2 Fixation Into Cyclic Carbonates Catalyzed by a Deferiprone‐Derived Bifunctional System

European Journal of Organic Chemistry, EarlyView.
A simple bifunctional organocatalyst derived from the FDA‐approved chelator deferiprone efficiently promotes CO2 fixation into cyclic carbonates. By combining epoxide activation and nucleophilic ring opening in a single scaffold, quantitative conversions are achieved under mild, metal‐free conditions. High activity, broad substrate scope, and excellent
Erika Saccullo, Luca Calantropo, Roberto Fiorenza, Pietro Nicotra, Antonio Rescifina, Vincenzo Patamia, Giuseppe Floresta   +6 more
wiley   +1 more source

Pd‐Catalyzed Cyclotrimerization and Cycloaddition of 5,6‐Didehydrobenzo[8]annulenes (BenzoCOTynes): Formation of Nonplanar Tri[8]annulenes and Diels–Alder Cycloadducts

European Journal of Organic Chemistry, EarlyView.
A Pd(0)‐catalyzed cyclotrimerization of benzoCOTynes to form tri(benzo[8]annulenes) was developed. Three distinct isomers were isolated and structurally characterized by single‐crystal X‐ray diffraction. Ligand modulation proved crucial for enhancing regioselectivity: P(4‐OMePh), and (S)‐tBu‐Phox promoted the formation of the symmetric isomers.
Jesús Bello‐García, Jesús A. Varela, Carlos Saá   +2 more
wiley   +1 more source