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Pinar Sen

Speaker for catalysis conference 2017 - Pinar Sen

Title: Oxidation reactions of hydrogen peroxide catalysed with schiff base-complex substituted tri-nuclear phthalocyanine complexes on oxidative bleaching by online spectrophotometric method

Pinar Sen

Sakarya University, Turkey


Will be updated soon...


Phthalocyanines (Pcs) and metallophthalocyanines (MPcs) have drawn considerable attention as molecular materials. The increasing interest in phthalocyanines arise from their thermal and chemical stability. Moreover, the architectural flexibility that allows the chemical and physical properties of these molecules to be regulated is an extraordinary feature for material science.
In recent years, there has been a continuous interest in the search for new functional molecular materials for catalytic applications. Metallo-Pcs which contain redox active metals having wide range of oxidation states are preferred as the oxidation catalysts. The exceptional catalytic properties of phthalocyanines, such as oxidation of olefins, alkanes, alcohols and aromatic compounds have received considerable attention.
Oxidation reactions are also of great importance in the chemical industry. Molecular oxygen, hydrogen peroxide, sodium hypochlorite, ozone and organic peroxides are used as oxidants frequently in textile industry. Among such oxidizing agents, hydrogen peroxide is the most widely used bleaching agent in textile industry. However, this process requires high energy consumption due to the kinetics of this oxidant.
The corresponding researches are generally focused on the basis of transition metal complexes for the purpose of decreasing the temperature of the bleaching process to the ambient conditions and providing shorter reaction times.
So far, several novel coordination compounds of salen, saltren, terpyridine-type ligands and triazole derivatives have been synthesized and tested, possessing significant potential in activating hydrogen peroxide in bleach process.
In this study we will discuss the described new catalysts for oxygen-based bleaching containing a series of Co and Zn-phthalocyanine complexes having two substituted Schiff base Mn(III), Co(III), Fe(III) and Ni(II) complexes directly linked through oxygen bridges to the phthalocyanine core were synthesized and characterized as the new bleach catalysts class. 

Audience Take away:

The synthesis and characterization of new kind of bleach catalysts
Online spectrophotometric method for determine the activity of catalysts
The comparison of the bleach catalysts with the commercial activators

•    Explain how the audience will be able to use what they learn?
It is use in organic chemistry for oxidation reactions

•    How will this help the audience in their job? Is this research that other faculty could use to expand their research or teaching? Does this provide a practical solution to a problem that could simplify or make a designer’s job more efficient? Will it improve the accuracy of a design, or provide new information to assist in a design problem? List all other benefits.