SYNTHESIS, CHARACTERIZATION, THERMAL DEGRADATION AND ELECTROCHEMICAL PROPERTIES OF OLIGO-4-m- TOLYLAZOMETHINEPHENOL
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SYNTHESIS, CHARACTERIZATION, THERMAL DEGRADATION AND ELECTROCHEMICAL PROPERTIES OF OLIGO-4-m- TOLYLAZOMETHINEPHENOL
SYNTHESIS, CHARACTERIZATION, THERMAL DEGRADATION AND ELECTROCHEMICAL PROPERTIES OF OLIGO-4-m- TOLYLAZOMETHINEPHENOL
高分子科学(英文版)2006年第6期 页码:647-656
Affiliations:
1. Department of Chemistry Faculty of Sciences and Arts
2. anakkale Onsekiz Mart University
3. TR- anakkale ,17020
4. Turkey
Author bio:
Funds:
This work was supported by TUBITAK and DPT Grants Commission for a research grant (No. TBAG-2451 (104T062)).()
DOI:
中图分类号:TQ316.3
纸质出版:2006
Accepted:
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[1]smet Kaya,Yasin Bayrakli.SYNTHESIS,CHARACTERIZATION,THERMAL DEGRADATION AND ELECTROCHEMICAL PROPERTIES OF OLIGO-4-m-TOLYLAZOMETHINEPHENOL[J].Chinese Journal of Polymer Science,2006(06):647-656.
SYNTHESIS, CHARACTERIZATION, THERMAL DEGRADATION AND ELECTROCHEMICAL PROPERTIES OF OLIGO-4-m- TOLYLAZOMETHINEPHENOL[J]. 2006, (6): 647-656.
[1]smet Kaya,Yasin Bayrakli.SYNTHESIS,CHARACTERIZATION,THERMAL DEGRADATION AND ELECTROCHEMICAL PROPERTIES OF OLIGO-4-m-TOLYLAZOMETHINEPHENOL[J].Chinese Journal of Polymer Science,2006(06):647-656.DOI:
SYNTHESIS, CHARACTERIZATION, THERMAL DEGRADATION AND ELECTROCHEMICAL PROPERTIES OF OLIGO-4-m- TOLYLAZOMETHINEPHENOL[J]. 2006, (6): 647-656.DOI:
SYNTHESIS, CHARACTERIZATION, THERMAL DEGRADATION AND ELECTROCHEMICAL PROPERTIES OF OLIGO-4-m- TOLYLAZOMETHINEPHENOL
<正>The oxidative polycondensation reaction conditions of 4-m-tolylazomethinephenol (4-TAMP) in the presence of air O2 and NaOCl as oxidants were studied in an aqueous alkaline medium between 50 and 90℃. The structures of the obtained monomer and oligomer were confirmed by FT-IR
UV-Vis
1H- and 13C-NMR and elemental analysis techniques. The physical characterization was made by TG-DTA
size exclusion chromatography (SEC) and solubility tests. At the optimum reaction conditions
the yield of oligo-4-m-tolylazomethinephenol (O-4-TAMP) was found to be 62.50% (for air O2 oxidant) and 90.0% (for NaOCl oxidant)
respectively. According to the SEC analysis
the number-average molecular weight (Mn)
weight-average molecular weight (Mw) and polydispersity index (PDI) values of O-4-TAMP were found to be 2310
2610 g mol-1 and 1.13
respectively
using air O2
and 1390
1710 g mol-1 and 1.23
using NaOCl
respectively. According to TG-DTA analyses
O-4-TAMP was more stable than 4-TAMP against thermal decomposition. The weight losses of 4-TAMP and O-4-TAMP were found to be 68% and 58% at 1000℃. Electrical conductivity of the O-4-TAMP was measured
showing that the polymer is a typical semiconductor. Electrochemically
the highest occupied molecular orbital (HOMO)
the lowest unoccupied molecular orbital (LUMO) and electrochemical energy gaps (E’g) for 4-TAMP are -5.96
-3.22 and 2.74 eV
respectively. The HOMO
LUMO and (E’g) for O-4-TAMP are -5.78
-3.44 and 2.34 eV
respectively. According to UV-Vis measurements
optical band gaps (Eg) of 4-TAMP and O-4-TAMP were found to be 3.45 and 3.10 eV
respectively.
Abstract
The oxidative polycondensation reaction conditions of 4-m-tolylazomethinephenol (4-TAMP) in the presence of air O2 and NaOCl as oxidants were studied in an aqueous alkaline medium between 50 and 90℃. The structures of the obtained monomer and oligomer were confirmed by FT-IR
UV-Vis
1H- and 13C-NMR and elemental analysis techniques. The physical characterization was made by TG-DTA
size exclusion chromatography (SEC) and solubility tests. At the optimum reaction conditions
the yield of oligo-4-m-tolylazomethinephenol (O-4-TAMP) was found to be 62.50% (for air O2 oxidant) and 90.0% (for NaOCl oxidant)
respectively. According to the SEC analysis
the number-average molecular weight (Mn)
weight-average molecular weight (Mw) and polydispersity index (PDI) values of O-4-TAMP were found to be 2310
2610 g mol-1 and 1.13
respectively
using air O2
and 1390
1710 g mol-1 and 1.23
using NaOCl
respectively. According to TG-DTA analyses
O-4-TAMP was more stable than 4-TAMP against thermal decomposition. The weight losses of 4-TAMP and O-4-TAMP were found to be 68% and 58% at 1000℃. Electrical conductivity of the O-4-TAMP was measured
showing that the polymer is a typical semiconductor. Electrochemically
the highest occupied molecular orbital (HOMO)
the lowest unoccupied molecular orbital (LUMO) and electrochemical energy gaps (E’g) for 4-TAMP are -5.96
-3.22 and 2.74 eV
respectively. The HOMO
LUMO and (E’g) for O-4-TAMP are -5.78
-3.44 and 2.34 eV
respectively. According to UV-Vis measurements
optical band gaps (Eg) of 4-TAMP and O-4-TAMP were found to be 3.45 and 3.10 eV
respectively.
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