scholarly journals Carborane–stilbene dyads: the influence of substituents and cluster isomers on photoluminescence properties

2017 ◽  
Vol 46 (7) ◽  
pp. 2091-2104 ◽  
Author(s):  
A. Ferrer-Ugalde ◽  
J. Cabrera-González ◽  
E. J. Juárez-Pérez ◽  
F. Teixidor ◽  
E. Pérez-Inestrosa ◽  
...  
Keyword(s):  
Photophysical Properties ◽  
Carbon Cluster ◽  
Photoluminescence Properties ◽  
Cluster Atom ◽  
Influence Of Substituents

A family of stilbene-containing meta- and ortho-carborane derivatives substitute at the second carbon cluster atom are synthesised and their photophysical properties evaluated.

scholarly journals Indenopyrans – synthesis and photoluminescence properties

2016 ◽  
Vol 12 ◽  
pp. 825-834 ◽  
Author(s):  
Andreea Petronela Diac ◽  
Ana-Maria Ţepeş ◽  
Albert Soran ◽  
Ion Grosu ◽  
Anamaria Terec ◽  
...  
Keyword(s):  
Solid State ◽  
Emission Band ◽  
Fluorescence Spectra ◽  
Photophysical Properties ◽  
Quantum Yields ◽  
Band Broadening ◽  
Photoluminescence Properties ◽  
Fluorescence Quantum Yields ◽  
Blue Emitters ◽  
Solid State Fluorescence

New indeno[1,2-c]pyran-3-ones bearing different substituents at the pyran moiety were synthesized and their photophysical properties were investigated. In solution all compounds were found to be blue emitters and the trans isomers exhibited significantly higher fluorescence quantum yields (relative to 9,10-diphenylanthracene) as compared to the corresponding cis isomers. The solid-state fluorescence spectra revealed an important red shift of λmax due to intermolecular interactions in the lattice, along with an emission-band broadening, as compared to the solution fluorescence spectra.

Synthesis and Characterization of Luminescent Rod-Coil Poly[2,7-(9,9- Dihexylfluorene)] - Block-Poly(2-(Dimethylamino) Ethyl Methacrylate) by Atom Transfer Radical Polymerization

2008 ◽  
Vol 47-50 ◽  
pp. 642-645
Author(s):  
Yang Yen Yu ◽  
Wen Chen Chien ◽  
Chia Liang Tsai
Keyword(s):  
Atom Transfer Radical Polymerization ◽  
Radical Polymerization ◽  
Photophysical Properties ◽  
Mixed Solvents ◽  
Solvent System ◽  
Synthesis And Characterization ◽  
Photoluminescence Properties ◽  
Ethyl Methacrylate ◽  
Large Compound

The synthesis, morphology, and photophysical properties of Poly[2,7-(9,9-dihexyl fluorene)]- block-poly(2-(Dimethylamino) ethyl methacrylate) (PF-b-PDMAEMA) copolymers in various mixed solvents, i.e., THF/MeOH, DMF/MeOH, and 1,4-Dioxane/MeOH, with methanol contents of 0, 10, 25, 50, 75, 90 vol.% were reported. TEM images showed that different aggregate morphologies of PF-b-PDMAEMA, including spherical and large compound micelles, cylinder, nanorods, long stick-like structure, could be prepared by introducing different amount of methanol into the copolymer/solvent system. The results indicated that aggregate morphologies of PF-b-PDMAEMA, which obtained from various coil lengths and mixed solvents, had a great influenced on the optical and photoluminescence properties of the prepared PF-b-PDMAEMA copolymers.

Polynuclear Cu(i) and Ag(i) phosphine complexes containing multi-dentate polytopic ligands: syntheses, crystal structures and photoluminescence properties

2019 ◽  
Vol 48 (2) ◽  
pp. 741-750 ◽  
Author(s):  
Jing Xiang ◽  
Shun-Cheung Cheng ◽  
Xin-Xin Jin ◽  
Qian-Qian Su ◽  
Xin Zhou ◽  
...  
Keyword(s):  
Crystal Structures ◽  
Photophysical Properties ◽  
Photoluminescence Properties ◽  
Phosphine Complexes

A series of polynuclear Cu(i)/Ag(i) complexes have been obtained on the basis of three polytopic ligands. Their structures and photophysical properties have been investigated in detail.

Transition metal based single chained surfactants: synthesis, aggregation behavior and enhanced photoluminescence properties of fluorescein

RSC Advances ◽  
2016 ◽  
Vol 6 (110) ◽  
pp. 108573-108582 ◽  
Author(s):  
Preeti Garg ◽  
Gurpreet Kaur ◽  
Ganga Ram Chaudhary
Keyword(s):  
Transition Metal ◽  
Photophysical Properties ◽  
Aggregation Behavior ◽  
Photoluminescence Properties ◽  
Enhanced Photoluminescence ◽  
Counter Ion ◽  
Aggregation Behaviour

Four different transition metal based surfactants were synthesized. The effect of presence of metal as a part of counter ion on the aggregation behaviour of metallosurfactants and on the photophysical properties of fluorescein was explored.

Structural Properties of Ruthenium Biimidazole Complexes Determining the Stability of their Supramolecular Aggregates

2010 ◽  
Vol 65 (3) ◽  
pp. 281-290 ◽  
Author(s):  
Nils Rockstroh ◽  
Katrin Peuntinger ◽  
Helmar Görls ◽  
Dirk M Guldi ◽  
Frank W. Heinemann ◽  
...  
Keyword(s):  
Structural Properties ◽  
Ruthenium Complex ◽  
Photophysical Properties ◽  
Visible Range ◽  
X Ray ◽  
Bond Lengths ◽  
Amine Function ◽  
The Stability ◽  
Supramolecular Aggregates ◽  
Influence Of Substituents

The results of a detailed investigation of the influence of substituents in a variety of ruthenium biimidazole-type complexes [Ru(R-bpy)2(R´-bi(bz)imH2)]2+ (R = H, tBu; R´ = H,Me; bi(bz)imH2 = 2,2´-bi(benz)imidazole) on selected structural and photophysical properties is reported. The photophysical properties are only marginally influenced by the substituents at the bipyridine and the biimidazole core. All complexes show intense absorptions in the visible range of the spectrum with maxima around 475 nm, and emission from the formed excited state occurs at wavelengths between 650 and 670 nm. The comparison of structural properties determined by X-ray analysis within a series of related complexes shows that the Ru-N bond lengths to the coordinated bipyridines are not significantly influenced by the substituents, but slight differences in the Ru-N bond lengths to the biimidazole-type ligands can be detected. The reactions between ruthenium complexes containing different biimidazole-type ligands with the sulfate dianion, however, show a strong correlation between the substituents at the biimidazole core and the solubility of the product. The bibenzimidazolecontaining complexes precipitate from aqueous solution whereas the ruthenium complex containing unsubstituted biimidazole stays in solution. The solid-state structure of one example of the sulfatecontaining products (2b) shows that strong hydrogen bonds between the secondary amine function of the bibenzimidazole and the oxygen functionalities of the sulfate contribute to this unexpected behavior.

Influence of substituents in the phenyl ring on photophysical properties of 3-[2-(phenyl)benzoxazol-5-yl]alanine derivatives

2005 ◽  
Vol 175 (1) ◽  
pp. 57-68 ◽  
Author(s):  
Katarzyna Guzow ◽  
Justyna Zielińska ◽  
Kamil Mazurkiewicz ◽  
Jerzy Karolczak ◽  
Wiesław Wiczk
Keyword(s):  
Phenyl Ring ◽  
Photophysical Properties ◽  
Influence Of Substituents

Photoluminescence properties of tetrahedral zinc(ii) complexes supported by calix[4]arene-based salicylaldiminato ligands

2018 ◽  
Vol 47 (16) ◽  
pp. 5801-5811 ◽  
Author(s):  
Steve Ullmann ◽  
René Schnorr ◽  
Christian Laube ◽  
Bernd Abel ◽  
Berthold Kersting
Keyword(s):  
Photophysical Properties ◽  
Photoluminescence Properties ◽  
Arene Complexes

The photophysical properties of zinc salicylaldiminato calix[4]arene complexes can be fine-tuned by the salicylaldiminato substituents and the calix[4]arene conformation.

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