نتایج جستجو برای: luminescent properties

تعداد نتایج: 874048  

Journal: :international journal of nano dimension 0
n. molahasani department of chemistry, tehran shargh branch, islamic azad university, tehran, iran. m. s. sadjadi department of chemistry, science and research branch, islamic azad university, tehran, iran. k. zare department of chemistry, science and research branch, islamic azad university, tehran, iran.

nanocrystalline zinc oxide (zno) powders with different morphology have been successfully synthesized by using different surfactants such as cetyl trimethyl ammonium bromide (ctab), sodium dodecyl sulphate (sds), and tri ethanol amine (tea) via hydrothermal method. the products were characterized by means of powder x-ray diffraction (xrd), scanning electron microscopy (sem), transmission electr...

Journal: :Physical chemistry chemical physics : PCCP 2016
Mohan Zhang Richard G Weiss

Stimulus-responsive molecular gel systems, based on metal salts of a luminescent gelator, 9,10-dioxooctadecanoic acid (DODA), are reported. These salts are structurally the simplest metallo-gelators of which we are aware that exhibit controllable mechano-responsive and luminescent properties. Aggregation is more favored by the metal salts than for DODA itself. However, gelation ability differs ...

Journal: :Geophysical Research Letters 2021

Methods developed to explore the luminescent properties of moon facilitated development techniques infer terrestrial solar-induced chlorophyll fluorescence (SIF) from satellite instruments. While single SIF retrievals are inherently noisy, averaging many allows us obtain highly accurate estimates. We analyzed several years aggregated data collected by TROPOspheric Monitoring Instrument (TROPOMI...

Journal: :Chemical communications 2016
You Zhou Bing Yan

A responsive luminescent MOF nanocomposite has been developed by postsynthetic incorporation of Eu(3+) cations into a robust nanocrystalline framework. The resultant MOF nanocomposite can serve as a platform for recognizing aromatic VOCs with similar structures and physical properties based on an unprecedented dual-readout identification scheme.

2014
Piotr Psuja Wieslaw Strek Ihar Yelkin

The synthesis of nanosized phosphors by using the non-thermal plasma-driven method is presented. The method allows to control the average grain size of nanocrystals. The synthesis of Eu3+-doped Y2O3 nanocrystalline phosphors at water solution of nitrates is described. The average sizes of nanocrystals were controlled by sintering temperature. Their structure, morphology, and luminescent propert...

2015
S. G. Nedilko S. L. Revo V. P. Chornii V. P. Scherbatskyi M. S. Nedielko

Morphology and photoluminescence (PL) properties for microcrystalline cellulose (MCC), microcrystalline nitrite powders of common formulae MNO2 (M=Na, K) (MCN) and two-component materials composed of both MCC and MCN have been prepared and characterized by means of optical microscopy and luminescence spectroscopy. This study aimed to clarify a possibility of low-limit determination of the nitri...

Journal: :Dalton transactions 2012
Naveen Kumar Allampally Cristian A Strassert Luisa De Cola

A platinum complex bearing a tetraethylene glycol chain has been designed and its self-assembly properties investigated. In solution, only a yellow phosphorescence of the aggregated species is observed. The complex gives luminescent gels of different colours with DCM and DMF, reaching up to 60% photoluminescence quantum yield.

Journal: :Chemical communications 2011
Ana S Mocanu Maria Amela-Cortes Yann Molard Viorel Cîrcu Stéphane Cordier

This work presents the synthesis and studies of a red-NIR luminescent liquid crystal compound based on an octahedral metallic cluster core orthogonally bounded to six non-mesogenic organic ligands. It evidences synergetic effects between the organic and inorganic parts of the hybrid, resulting in the generation of liquid crystal properties on cooling from the isotropic melt.

2016
Livia Civitelli Linnea Sandin Erin Nelson Sikander Iqbal Khattak Ann-Christin Brorsson Katarina Kågedal

Livia Civitelli, Linnea Sandin, Erin Nelson, Sikander Iqbal Khattak, Ann-Christin Brorsson and Katarina Kågedal, The Luminescent Oligothiophene p-FTAA Converts Toxic A beta(142) Species into Nontoxic Amyloid Fibers with Altered Properties, 2016, Journal of Biological Chemistry, (291), 17, 9233-9243. http://dx.doi.org/10.1074/jbc.M115.696229 Copyright: American Society for Biochemistry and Molec...

Journal: :Dalton transactions 2016
Yong Yan Jun Chen Ning-Ning Zhang Ming-Sheng Wang Cai Sun Xiu-Shuang Xing Rong Li Jian-Gang Xu Fa-Kun Zheng Guo-Cong Guo

In this work, we report a new mechanoresponsive luminescent Cd(ii) coordination polymer that exhibits a sensitivity to mechanical stimulation. The luminescence colour changed gradually from weak yellowish-green to bright cyan in response to different grinding sizes, thereby showing interesting mechanochromic properties, namely a grinding-enhanced luminescence and good crystalline maintenance ab...

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