Th(iv) and Ce(iv) napthylsalophen sandwich complexes: characterization of unusual thorium fluorescence in solution and solid-state

2017 ◽  
Vol 53 (88) ◽  
pp. 11984-11987 ◽  
Author(s):  
E. E. Hardy ◽  
K. M. Wyss ◽  
J. D. Gorden ◽  
I. R. Ariyarathna ◽  
E. Miliordos ◽  
...  
Keyword(s):  
Solid State ◽  
Electronic Spectroscopy ◽  
Sandwich Complexes

The synthesis, characterization, and surprising electronic spectroscopy of two ML2 sandwich complexes, where M = Ce(iv) or Th(iv) and L = napthylsalophen2− are described.

Koordinationschemie von Liganden mit den Donatoren Phosphor und Schwefel, I Nickel(II)-Komplexe mit Phosphinomethylthioethera als Liganden Gleichgewicht zwischen planarem und tetraedrischem Nickel(II) / Coordination Chemistry of Ligands with the Donors Phosphorus and Sulfur, I Nickel(II) Complexes with Phosphinomethylthioethers as Ligands A Planar-Tetrahedral Equilibrium with Nickel(II)

1982 ◽  
Vol 37 (3) ◽  
pp. 332-340 ◽  
Author(s):  
Thomas Gerdau ◽  
Reinhard Kramolowsky
Keyword(s):  
Coordination Chemistry ◽  
Solid State ◽  
Phosphorus Atom ◽  
General Type ◽  
Magnetic Measurements ◽  
Electronic Spectroscopy ◽  
Planar Configuration ◽  
Square Planar ◽  
Monodentate Ligands

Abstract The preparation and structural characterization of phosphinomethylthioethernickel(II) complexes of the general type [NiX2(Ph2PCH2SR)2] (X = CI, Br, I, NCS: R = Me, Ph) are reported. In all the complexes the phosphinomethylthioethers act as monodentate ligands coordinating via the phosphorus atom. The isothiocyanate complexes are diamagnetic both in solution and in the solid state and have been assigned trans-planar configuration. As shown by magnetic measurements and by electronic spectroscopy, the halo complexes exhibit a square-planar (diamagnetic) ⇄ distorted-tetrahedral (paramagnetic) equilibrium in solution, while in the solid state the complexes are either square-planar or distorted-tetrahedral. For the complex [NiBr2(Ph2PCH2SMe)2] both isomers have been isolated in the solid state.

scholarly journals Room Temperature Inter-Dot Coherent Dynamics in Multilayers Quantum Dot Materials

2020 ◽  
Author(s):  
Elisabetta Collini ◽  
Hugo Gattuso ◽  
Yuval Kolodny ◽  
Luca Bolzonello ◽  
Andrea Volpato ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Solid State ◽  
Room Temperature ◽  
Electronic Spectroscopy ◽  
Ambient Conditions ◽  
Cdse Qds ◽  
Coherent Dynamics ◽  
Important Evidence ◽  
Opening Up

<div><div><div><p>The full blossoming of quantum technologies requires the availability of easy-to-prepare materials where quantum coherences can be effectively initiated, controlled and exploited, preferably at ambient conditions. Solid-state multilayers of colloidally grown quantum dots (QDs) are highly promising for this task because of the possibility of assembling networks of electronically coupled QDs through the modulation of sizes, inter-dot linkers and distances. To usefully probe coherence in these materials, the dynamical characterization of their collective quantum mechanically coupled states is needed. Here we explore by 2D electronic spectroscopy the coherent dynamics of solid-state multilayers of electronically coupled colloidally grown CdSe QDs and complement it by detailed computations. The time evolution of a coherent superposition of states delocalized over more than one QD was captured at ambient conditions. We thus provide important evidence for inter-dot coherences in such solid-state materials, opening up the effective exploitation of these materials towards quantum technologies.</p></div></div></div>

scholarly journals Room Temperature Inter-Dot Coherent Dynamics in Multilayers Quantum Dot Materials

2020 ◽  
Author(s):  
Elisabetta Collini ◽  
Hugo Gattuso ◽  
Yuval Kolodny ◽  
Luca Bolzonello ◽  
Andrea Volpato ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Solid State ◽  
Room Temperature ◽  
Electronic Spectroscopy ◽  
Ambient Conditions ◽  
Cdse Qds ◽  
Coherent Dynamics ◽  
Important Evidence ◽  
Opening Up

<div><div><div><p>The full blossoming of quantum technologies requires the availability of easy-to-prepare materials where quantum coherences can be effectively initiated, controlled and exploited, preferably at ambient conditions. Solid-state multilayers of colloidally grown quantum dots (QDs) are highly promising for this task because of the possibility of assembling networks of electronically coupled QDs through the modulation of sizes, inter-dot linkers and distances. To usefully probe coherence in these materials, the dynamical characterization of their collective quantum mechanically coupled states is needed. Here we explore by 2D electronic spectroscopy the coherent dynamics of solid-state multilayers of electronically coupled colloidally grown CdSe QDs and complement it by detailed computations. The time evolution of a coherent superposition of states delocalized over more than one QD was captured at ambient conditions. We thus provide important evidence for inter-dot coherences in such solid-state materials, opening up the effective exploitation of these materials towards quantum technologies.</p></div></div></div>

Coordination Compounds of Some 3d-Transition Metal Ions with N1-[4-(4-bromo-phenylsulfonyl)-benzoyl]-N4-(4-methoxyphenyl)- thiosemicarbazide

2008 ◽  
Vol 59 (7) ◽  
Author(s):  
Madalina Angelusiu ◽  
Maria Negoiu ◽  
Stefania-Felicia Barbuceanu ◽  
Tudor Rosu
Keyword(s):  
Coordination Compounds ◽  
Magnetic Moments ◽  
Thermo Gravimetric Analysis ◽  
Electronic Spectroscopy ◽  
Transition Metal Ions ◽  
Synthesis And Characterization ◽  
Gravimetric Analysis ◽  
Thermo Gravimetric ◽  
New Compounds

The paper presents the synthesis and characterization of Cu(II), Co(II), Ni(II), Cd(II), Zn(II) and Hg(II) complexes with N1-[4-(4-bromo-phenylsulfonyl)-benzoyl]-N4-(4-methoxyphenyl)-thiosemicarbazide. The new compounds were characterized by IR, EPR, electronic spectroscopy, magnetic moments, thermo-gravimetric analysis and elemental analysis.

scholarly journals Synthesis, Fabrication, and Characterization of Functionalized Polydiacetylene Containing Cellulose Nanofibrous Composites for Colorimetric Sensing of Organophosphate Compounds

Nanomaterials ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 1869
Author(s):  
A K M Mashud Alam ◽  
Donovan Jenks ◽  
George A. Kraus ◽  
Chunhui Xiang
Keyword(s):  
Solid State ◽  
Hydroxyl Groups ◽  
Colorimetric Sensing ◽  
Electrospinning Technique ◽  
Hazardous Chemical ◽  
Tensile Tester ◽  
Vis Spectroscopy ◽  
Ft Ir ◽  
Landmark Study

Organophosphate (OP) compounds, a family of highly hazardous chemical compounds included in nerve agents and pesticides, have been linked to more than 250,000 annual deaths connected to various chronic diseases. However, a solid-state sensing system that is able to be integrated into a clothing system is rare in the literature. This study aims to develop a nanofiber-based solid-state polymeric material as a soft sensor to detect OP compounds present in the environment. Esters of polydiacetylene were synthesized and incorporated into a cellulose acetate nanocomposite fibrous assembly developed with an electrospinning technique, which was then hydrolyzed to generate more hydroxyl groups for OP binding. Scanning electron microscopy (SEM), Fourier-transform infrared spectroscopy (FT-IR), Instron® tensile tester, contact angle analyzer, and UV–Vis spectroscopy were employed for characterizations. Upon hydrolysis, polydiacetylene esters in the cellulosic fiber matrix were found unaffected by hydrolysis treatment, which made the composites suitable for OP sensing. Furthermore, the nanofibrous (NF) composites exhibited tensile properties suitable to be used as a textile material. Finally, the NF composites exhibited colorimetric sensing of OP, which is visible to the naked eye. This research is a landmark study toward the development of OP sensing in a protective clothing system.

Solid-state synthesis and characterization of two-dimensional hexagonal BCN nanosheet using a free template method

2021 ◽  
Vol 115 ◽  
pp. 108350
Author(s):  
Majid Mirzaee ◽  
Alimorad Rashidi ◽  
Ashkan Zolriasatein ◽  
Majid Rezaei Abadchi
Keyword(s):  
Solid State ◽  
Solid State Synthesis ◽  
Synthesis And Characterization ◽  
Template Method ◽  
Two Dimensional
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