scholarly journals Synthesis and electronic properties of nitrogen-bridged dimers of boron subphthalocyanines

2016 ◽  
Vol 52 (63) ◽  
pp. 9793-9796 ◽  
Author(s):  
J. Guilleme ◽  
D. González-Rodríguez ◽  
T. Torres
Keyword(s):  
Electronic Properties ◽  
Synthesis And Characterization ◽  
New Family ◽  
First Time

We describe for the first time the synthesis and characterization of a new family of subphthalocyanine derivatives, the μ-azo dimers, in which two closely interacting macrocycles are axially linked together by a B–N–B bridge.

scholarly journals Photoluminescence of Pentavalent Uranyl Amide Complexes

2021 ◽  
Author(s):  
Fabrizio Ortu ◽  
simon Randall ◽  
David J. Moulding ◽  
Adam woodward ◽  
Karsten Meyer ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Excited State ◽  
Charge Transfer ◽  
Synthesis And Characterization ◽  
New Family ◽  
Theoretical Investigations ◽  
Charge Transfer Transitions ◽  
Uv Visible ◽  
First Time

We report the synthesis and characterization of a new family of pentavalent uranyl amide complexes, supported also by photoluminescence and theoretical investigations. These studies reveal for the first time that the UV-visible emission of uranyl(V) is an admixture of charge transfer transitions accompanied by vibronic coupling of the quartet excited state with uranyl oxo and amide vibrations, thereby offering new insights into the electronic structure of the reactive uranyl(V)

scholarly journals Photoluminescence of Pentavalent Uranyl Amide Complexes

2021 ◽  
Author(s):  
Fabrizio Ortu ◽  
simon Randall ◽  
David J. Moulding ◽  
Adam woodward ◽  
Karsten Meyer ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Excited State ◽  
Charge Transfer ◽  
Synthesis And Characterization ◽  
New Family ◽  
Theoretical Investigations ◽  
Charge Transfer Transitions ◽  
Uv Visible ◽  
First Time

We report the synthesis and characterization of a new family of pentavalent uranyl amide complexes, supported also by photoluminescence and theoretical investigations. These studies reveal for the first time that the UV-visible emission of uranyl(V) is an admixture of charge transfer transitions accompanied by vibronic coupling of the quartet excited state with uranyl oxo and amide vibrations, thereby offering new insights into the electronic structure of the reactive uranyl(V)

scholarly journals Photoluminescence of Pentavalent Uranyl Amide Complexes

2021 ◽  
Author(s):  
Fabrizio Ortu ◽  
simon Randall ◽  
David J. Moulding ◽  
Adam woodward ◽  
Karsten Meyer ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Excited State ◽  
Charge Transfer ◽  
Synthesis And Characterization ◽  
New Family ◽  
Theoretical Investigations ◽  
Charge Transfer Transitions ◽  
Uv Visible ◽  
First Time

We report the synthesis and characterization of a new family of pentavalent uranyl amide complexes, supported also by photoluminescence and theoretical investigations. These studies reveal for the first time that the UV-visible emission of uranyl(V) is an admixture of charge transfer transitions accompanied by vibronic coupling of the quartet excited state with uranyl oxo and amide vibrations, thereby offering new insights into the electronic structure of the reactive uranyl(V)

scholarly journals Semi-Crystalline Hydrophobic Polyamidoamines: A New Family of Technological Materials?

Polymers ◽  
2021 ◽  
Vol 13 (7) ◽  
pp. 1018
Author(s):  
Massimo Marcioni ◽  
Jenny Alongi ◽  
Elisabetta Ranucci ◽  
Mario Malinconico ◽  
Paola Laurienzo ◽  
...  
Keyword(s):  
Maximum Stress ◽  
Water Resistance ◽  
Prolonged Exposure ◽  
Water Soluble ◽  
Synthesis And Characterization ◽  
Molecular Weights ◽  
New Family ◽  
Methylene Groups ◽  
Methane Flame

The hitherto known polyamidoamines (PAAs) are not suitable as structural materials because they are usually water-soluble or swellable in water. This paper deals with the synthesis and characterization of semi-crystalline hydrophobic PAAs (H-PAAs) by combining different bis-sec-amines with bis-acrylamides obtained from C6–C12 bis-prim-amines. H-PAAs were initially obtained in a solution of benzyl alcohol, a solvent suitable for both monomers and polymers. Their number average molecular weights, M¯n, which were determined with 1H-NMR by evaluating the percentage of their terminal units, varied from 6000 to >10,000. The solubility, thermal properties, ignitability and water resistance of H-PAAs were determined. They were soluble in organic solvents, semi-crystalline and thermally stable. The most promising ones were also prepared using a bulk process, which has never been previously reported for PAA synthesis. In the form of films, these H-PAAs were apparently unaffected by water. The films underwent tensile and wettability tests. They showed similar Young moduli (260–263 MPa), whereas the maximum stress and the stress at break depended on the number of methylene groups of the starting bis-acrylamides. Their wettability was somewhat higher than that of common Nylons. Interestingly, none of the H-PAAs considered, either as films or powders, ignited after prolonged exposure to a methane flame.

scholarly journals Synthesis and Optoelectronic Properties of Iptycene–Naphthazarin Dyes

Synlett ◽  
2018 ◽  
Vol 30 (01) ◽  
pp. 54-58 ◽  
Author(s):  
Timothy Swager ◽  
Cagatay Dengiz ◽  
You-Chi Wu
Keyword(s):  
Single Crystal ◽  
Electronic Properties ◽  
Diels Alder ◽  
Optoelectronic Properties ◽  
Synthesis And Characterization ◽  
Nmr Analysis ◽  
X Ray ◽  
Vis Spectroscopy

We report the synthesis and characterization of iptycene–naphthazarin dyes by using a sequential Diels–Alder approach. The tautomerization of naphthazarin was used as the key step in the synthesis, with structures confirmed by single-crystal X-ray and NMR analysis. The systematic trends in electronic properties were investigated by UV/Vis spectroscopy. BF2 complexes of the dyes were prepared by reaction with BF3·OEt2 in CH2Cl2.

scholarly journals A new family of fullerene derivatives: fullerene-curcumin conjugates for biological and photovoltaic applications

RSC Advances ◽  
2018 ◽  
Vol 8 (73) ◽  
pp. 41692-41698 ◽  
Author(s):  
Edison Castro ◽  
Maira R. Cerón ◽  
Andrea Hernandez Garcia ◽  
Quentin Kim ◽  
Alvaro Etcheverry-Berríos ◽  
...  
Keyword(s):  
Synthesis And Characterization ◽  
Fullerene Derivatives ◽  
New Family ◽  
Photovoltaic Applications

The synthesis and characterization of a family of [60]fullerocurcuminoids obtainedviaBingel reactions is reported.

Synthesis and Characterization of a New Family of Mixed Oxide−Proton Conductors Based on Tristrontium Oxysilicate

2008 ◽  
Vol 20 (5) ◽  
pp. 2026-2034 ◽  
Author(s):  
José M. Porras-Vázquez ◽  
Enrique R. Losilla ◽  
Laura León-Reina ◽  
María Martínez-Lara ◽  
Miguel A. G. Aranda
Keyword(s):  
Mixed Oxide ◽  
Proton Conductors ◽  
Synthesis And Characterization ◽  
New Family
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