Spectroscopic characterization of C7H3+ and C7H3˙: electronic absorption and fluorescence in 6 K neon matrices

2014 ◽  
Vol 16 (15) ◽  
pp. 7023-7030 ◽  
Author(s):  
Arghya Chakraborty ◽  
Jan Fulara ◽  
Rainer Dietsche ◽  
John P. Maier
Keyword(s):  
Absorption Spectra ◽  
Electronic Absorption ◽  
Electronic Absorption Spectra ◽  
Spectroscopic Characterization ◽  
First Time

Electronic absorption spectra of mass-selected C7H3+ and C7H3˙ isomers in a neon matrix have been identified for the first time.

Synthesis and photophysical properties of zinc phthalocyanines substituted with quinolinoxy group

2009 ◽  
Vol 13 (12) ◽  
pp. 1206-1213 ◽  
Author(s):  
Jinping Xue ◽  
Lixuan Cai ◽  
Naisheng Chen ◽  
Jinling Huang
Keyword(s):  
Absorption Spectra ◽  
Electronic Absorption ◽  
Elemental Analysis ◽  
Fluorescence Spectra ◽  
Electronic Absorption Spectra ◽  
Photophysical Properties ◽  
Electronic Spectroscopy ◽  
Zinc Phthalocyanines ◽  
New Compounds ◽  
First Time

The synthesis of tetrasubstituted zinc phthalocyanines bearing quinolinoxy groups are reported for the first time. The new compounds have been characterized by elemental analysis, IR, MS and electronic spectroscopy. The photophysical properties, such as the electronic absorption spectra and fluorescence spectra, have also been investigated and discussed together with the influence of substituent position and organic solvents on these properties. The introduction of quinolinoxy group to the Pc ring was found to affect these photophysical properties to some extent.

Discotic liquid crystals of transition metal complexes 34: spectroscopic properties of bis[octakis(3,4-dialkoxy-phenoxy)phthalocyaninato]lutetium(III) complexes

2003 ◽  
Vol 07 (02) ◽  
pp. 105-111 ◽  
Author(s):  
Kazuaki Hatsusaka ◽  
Kazuchika Ohta
Keyword(s):  
Thin Film ◽  
Absorption Spectra ◽  
Electronic Absorption ◽  
Liquid Crystalline ◽  
Electronic Absorption Spectra ◽  
Solvent Polarity ◽  
Spectroscopic Properties ◽  
Temperature Dependent ◽  
First Time ◽  
Hexane Solution

Spectroscopic properties of discotic liquid crystalline bis[octakis(3,4-dialkoxyphenoxy)-phthalocyaninato]lutetium(III) complexes, {[( C n O )2 PhO ]8 Pc }2 Lu (n = 12: 2a and n = 13: 2b), were investigated by recording electronic absorption spectra in the region of 250-2600 nm under three different conditions; solution, mixed solvent solutions, and a thin film at various temperatures. An intermolecular charge transfer (CT) band was found at about 2000-2100 nm both for the n-hexane solution and the thin film. It was established for the first time from the solvent-polarity-dependent and temperature-dependent electronic absorption spectra that the intermolecular CT band is attributable to molecular aggregation.

Toward understanding tautomeric switching in hydroxynaphthaldehydes: Characterization of electronic absorption spectra

2015 ◽  
Vol 14 (05) ◽  
pp. 1550033 ◽  
Author(s):  
Aeshah El-Amry ◽  
Shaaban A. Elroby ◽  
Oliver Kühn ◽  
Rifaat H. Hilal
Keyword(s):  
Absorption Spectra ◽  
Electronic Absorption ◽  
Density Functional ◽  
Electronic Absorption Spectra ◽  
Functional Theory ◽  
Long Wavelength ◽  
Dependent Absorption ◽  
Experimental Findings ◽  
Potential Use

Long-wavelength electronic absorption spectra of 4-hydroxy-1-naphthaldehyde, its dimer complexes, and 4-hydroxy-3-(piperidine-1-ylmethyl)-1-naphthaldehyde are investigated using time-dependent density functional theory with the TPSSh functional within a continuum solvation model. The results are correlated to recent experimental findings on solvent-, pH- and concentration-dependent absorption. It is confirmed that with decreasing wavelength the spectrum is dominated by the deprotonated (360 nm–400 nm), the dimer (340 nm–370 nm) and the monomer (< 280 nm) species. The potential use of hydroxynaphthaldehydes for the design of tautomeric switches is discussed.

Preparation and Characterization of a Novel Optical Material Based on Zinc-Tetraphenylporphyrin

2012 ◽  
Vol 476-478 ◽  
pp. 1254-1257
Author(s):  
Xiao Kang Li ◽  
Xiao Hui He ◽  
Yi Wang Chen ◽  
Xiao Lin Fan ◽  
Qing Dao Zeng
Keyword(s):  
Single Crystal ◽  
Absorption Spectra ◽  
Blue Light ◽  
Electronic Absorption ◽  
Fluorescence Spectra ◽  
Electronic Absorption Spectra ◽  
Supramolecular Complex ◽  
Optical Material ◽  
X Ray

Supramolecular complex，Zinc-tetraphenylporphyrin, 4,4’-azopyridine, Luminescence. Abstract. A new supramolecular complex(C44H28N4Zn)2•(C10H8N4)•(C7H8)(1) has been prepared by Zinc-tetraphenylporphyrin(ZnTPP) coordinated with 4,4’-azopyridine, which has been characterized by X-ray single-crystal diffraction.The electronic absorption spectra and fluorescence spectra reveal that the complex displays strong blue light and fluorescence, which is a good optical material.

Synthesis and Characterization of Binuclear and Trinuclear Cobalt(III) Complexes With Imidazolate Bridges

1986 ◽  
Vol 39 (8) ◽  
pp. 1213 ◽  
Author(s):  
CJ Hawkins ◽  
E Horn ◽  
J Martin ◽  
JAL Palmer ◽  
MR Snow
Keyword(s):  
Crystal Structure ◽  
Absorption Spectra ◽  
Electronic Absorption ◽  
Electronic Absorption Spectra ◽  
The Other ◽  
Synthesis And Characterization ◽  
Ammine Complexes

Two cobalt(III) ammine complexes are described which have an imidazolate ( Im ) ligand bridging cobalt(III) centres . Their electronic absorption spectra, 1H, 13C and 59Co n.m.r . spectra, and electrochemical data are presented. One complex is a bis [ pentaamminecobalt (III)] complex, [(H3N)5Co( Im )Co(NH3)5]5+, and the other has two pentaammineimidazolatocobalt (III) units coordinated in the cis arrangement to tetraamminecobalt (III). The crystal structure of cis - [(NH3)4Co{( Im )Co(NH3)5}2]Cl2(S2O6)2(OH).3.5H2O is reported. The crystals in the form of orange needles are monoclinic: Cc, a 20.18(1), b 17.089(9), c 15.395(7) Ǻ, β 123.76(4)°, Z 4. The structure was refined to R 0.079.

Tetrahalogenomercury(II) complexes. A study of their electronic spectra, formation constants, ionic strength, and cation effects

1991 ◽  
Vol 69 (3) ◽  
pp. 451-457 ◽  
Author(s):  
Trevor R. Griffiths ◽  
Richard A. Anderson
Keyword(s):  
Ionic Strength ◽  
Absorption Spectra ◽  
Electronic Absorption ◽  
Electronic Absorption Spectra ◽  
Linear Regression Analysis ◽  
Multiple Linear Regression Analysis ◽  
Formation Constants ◽  
Cation Effects ◽  
Halide Complexes ◽  
First Time

The unambiguous electronic absorption spectra of HgX42−(X = Cl, Br, or I) in methanol have been determined for the first time. The spectra were resolved into their component Gaussian bands, and assigned using a correlation diagram for Td symmetry. The effects of second-order spin–orbit coupling account satisfactorily for the observed band intensities and splittings. The formation constants, K4, as a function of ionic strength were computed over the complete spectral range by multiple linear regression analysis and were, extrapolated to infinite dilution, 0.4 ± 0.1 for Hgl42− and HgBr42−, and 5.7 ± 0.2 for HgCl42−. Significant cation effects were observed upon the spectra of HgX2 with added X−, and may partially be explained in terms of the extended Debye–Hückel equation. Key words: electronic absorption spectra, mercury(II) halide complexes, formation constants, ionic strength, Gaussian band analysis.

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