Synthesis, characterization, aggregation and thermal properties of a novel polymeric metal-free phthalocyanine and its metal complexes

Polyhedron ◽  
2009 ◽  
Vol 28 (11) ◽  
pp. 2268-2276 ◽  
Author(s):  
Ahmet Bilgin ◽  
Çiğdem Yağcı ◽  
Ufuk Yıldız ◽  
Ersel Özkazanç ◽  
Erdoğan Tarcan
Keyword(s):  
Thermal Properties ◽  
Metal Complexes ◽  
Metal Free

scholarly journals Synthesis, characterization and thermal properties of sodium pyruvate thiosemicarbazone and some of its metal complexes

2012 ◽  
Vol 24 (1) ◽  
pp. 25-31 ◽  
Author(s):  
Ahmed Jasim M. Al-Karawi ◽  
Adil Ahmed A. Al-Dulimi ◽  
Ali Mohamad Ali A. Al-Mokaram
Keyword(s):  
Thermal Properties ◽  
Metal Complexes ◽  
Sodium Pyruvate

Electrodeposition of catalytically active polyporphyrin films of metal complexes of amino-substituted tetraphenylporphyrins

2018 ◽  
Vol 22 (12) ◽  
pp. 1047-1053 ◽  
Author(s):  
Mariya V. Tesakova ◽  
Mitar Lutovac ◽  
Vladimir I. Parfenyuk
Keyword(s):  
Metal Complexes ◽  
Quartz Crystal ◽  
Film Growth ◽  
Metal Free ◽  
Porphyrin Ligand ◽  
Catalytically Active ◽  
Microscopy Method ◽  
Scanning Electron Microscopy Method ◽  
Electron Microscopy Method ◽  
Scanning Electron

The process of electrodeposition of polyporphyrin films based on amino-substituted tetraphenylporphyrins and their metal complexes (CuT([Formula: see text]-NH[Formula: see text]Ph)P, FeClT([Formula: see text]-NH[Formula: see text]Ph)P, MnClT([Formula: see text]-NH[Formula: see text]Ph)P) has been studied by the quartz crystal microbalance method. The surfaces of the films have been characterized by the scanning electron microscopy method and the number of electrons taking part in porphyrin electropolymerization has been determined. It has been established that the most intensive film growth is observed for the metal-free porphyrin ligand. The obtained polyporphyrin films have been analyzed for the catalytic ability in oxygen electroreduction reactions.

scholarly journals RECENTES APLICAÇÕES DO ORGANOFOTOCATALISADOR 1,2,3,5-TETRAQUIS(CARBAZOL-9-IL)-4,6- DICIANOBENZENO EM TRANSFORMAÇÕES QUÍMICAS

Química Nova ◽  
2020 ◽  
Author(s):  
Lucas Pugnal ◽  
Emanuele Pissinati ◽  
Karina Quaglio ◽  
Márcio Paixão
Keyword(s):  
Transition Metal ◽  
Metal Complexes ◽  
Transition Metal Complexes ◽  
Chemical Transformations ◽  
Redox Potentials ◽  
Research Groups ◽  
Organic Fluorophores ◽  
Metal Free ◽  
Polypyridine Complexes ◽  
Distinguished Research

RECENT APPLICATIONS OF THE ORGANIC PHOTOCATALYST 1,2,3,5-TETRAKIS(CARBAZOL-9-YL)- 4,6-DICIANOBENZENE IN CHEMICAL TRANSFORMATIONS. Ruthenium and iridium polypyridine complexes are among the most employed photocatalysts described in literature. The broad applicability is due to the redox potentials and long half-life times of the excited state which these molecules presented. The pursuit for metal-free alternatives has been intensified in the last few years, therefore, many organic fluorophores were successfully employed as photocatalysts. Among them, 1,2,3,5-tetrakis(carbazol-9-yl)- 4,6-dicianobenzene (4CzIPN) recently drawn attention of the community, and it’s been widely employed by distinguished research groups. Recent studies have shown that this catalyst do not only present similar properties to transition metal complexes, but also, its synthesis can be accomplished more easily and less expensive when compared with the metallic photocatalysts above mentioned. Therefore, 4CzIPN constitutes a metal-free alternative to replace transition metal complexes in conventional photochemical protocols. Moreover, it’s as a powerful ally in the development of new photochemical approaches. In this work, we aim to summarize recent applications of 4CzIPN as catalyst in the emerging field of redox photocatalysis.

Recent advances in graphitic carbon nitride as catalyst for heterogeneous Fenton-like reaction

2021 ◽  
Author(s):  
Jia Fei ◽  
Xin Peng ◽  
Longbo Jiang ◽  
Xingzhong Yuan ◽  
Xiangyan Chen ◽  
...  
Keyword(s):  
Thermal Properties ◽  
Carbon Nitride ◽  
Graphitic Carbon ◽  
Graphitic Carbon Nitride ◽  
Heterogeneous Fenton ◽  
Metal Free ◽  
Recent Advances ◽  
Stable Chemical ◽  
Structural Regulation

Graphitic carbon nitride (g-C3N4), an appealing metal-free polymer has gained extensive research in heterogeneous Fenton-like reactions owing to its advantages of stable chemical and thermal properties, easy of structural regulation...

Diverse composites of metal-complexes and PEDOT facilitated by metal-free vapour phase polymerization

2017 ◽  
Vol 116 ◽  
pp. 101-106 ◽  
Author(s):  
Shravan S. Acharya ◽  
Christopher D. Easton ◽  
Thomas M. McCoy ◽  
Leone Spiccia ◽  
C. André Ohlin ◽  
...  
Keyword(s):  
Metal Complexes ◽  
Vapour Phase ◽  
Metal Free

Synthesis, characterization, thermal properties and biological activity of diazine-ring containing hydrazones and their metal complexes

2020 ◽  
Author(s):  
Józef Magyari ◽  
Berta Barta Holló ◽  
Marko V. Rodić ◽  
Ljiljana S. Jovanović ◽  
Katalin Mészáros Szécsényi ◽  
...  
Keyword(s):  
Biological Activity ◽  
Thermal Properties ◽  
Metal Complexes

scholarly journals 1,3-Dioxolan-4-Ones as Promising Monomers for Aliphatic Polyesters: Metal-Free, in Bulk Preparation of PLA

Polymers ◽  
2020 ◽  
Vol 12 (10) ◽  
pp. 2396
Author(s):  
Stefano Gazzotti ◽  
Marco Aldo Ortenzi ◽  
Hermes Farina ◽  
Alessandra Silvani
Keyword(s):  
Molecular Weight ◽  
Thermal Properties ◽  
Acid Catalyst ◽  
Monomer Conversion ◽  
Reaction Conditions ◽  
Aliphatic Polyesters ◽  
Metal Free ◽  
Weight Growth ◽  
Double Activation

The first example of solvent-free, organocatalyzed, polymerization of 1,3-dioxolan-4-ones, used as easily accessible monomers for the synthesis of polylactic acid (PLA), is described here. An optimization of reaction conditions was carried out, with p-toluensulfonic acid emerging as the most efficient Brønsted acid catalyst. The reactivity of the monomers in the tested conditions was studied following the monomer conversion by 1H NMR and the molecular weight growth by SEC analysis. A double activation polymerization mechanism was proposed, pointing out the key role of the acid catalyst. The formation of acetal bridges was demonstrated, to different extents depending on the nature of the aldehyde or ketone employed for lactic acid protection. The polymer shows complete retention of stereochemistry, as well as good thermal properties and good polydispersity, albeit modest molecular weight.

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