Berhane, Atsebaha (2008) Electrochemical Polymerization of Metal Chelates Derived from Multidentate Thiophenes. Masters thesis, Addis Ababa University.
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PDF (Electrochemical Polymerization of Metal Chelates Derived from Multidentate Thiophenes)
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Abstract
The electrochemical polymerization and characterization studies were made for monomers: 3',4'-Diamino-2,2':5',2''-terthiopene (L1), 3',4'-bis(2-iminomethylphenol)- 2,2':5',2''-terthiopene (L2), [NiCl(H2O)3{3',4'-diamino-2,2':5',2''-terthiopene }] chloride hexahydrate (C1), [ZnCl2(H2O)2{3',4'-diamino-2,2':5',2''-terthiopene }] dehydrate (C2), [2NiCl2H2O {3',4'-bis(2-iminomethylphenol)-2,2':5',2''-terthiopene}]tetrahydrate (C3) and [Zn(NH3)2{3',4'-bis(2-iminomethylphenol)- 2,2':5',2''-terthiopene}] (C4) in Et4NBF4/CH3CN solution using glassy carbon and platinum as working electrodes, Ag/AgCl as reference electrode and platinum as counter electrode. When the potential was scanned between 0.0 and1.6 V for L1 and L2 as well as -0.3 to 1.1V for C1 and C2, they polymerize in ,''-linked polyterthiophene systems except L2 which displays both phenylene and thienylene linkages. However, C3 and C4 do not polymerize between 0.0 and 1.6V. The polyterthiophene films prepared have further been cycled in Et4NBF4/CH3CN solution to check their electrochemical stability. Metal containing polymer films (C1 and C2) exhibit better cycling behavior than polymers of L1, and L2. Reduction of nickel from Ni+2 to Ni+1 was proposed during the first five cycles.
| Item Type: | Thesis (Masters) |
|---|---|
| Uncontrolled Keywords: | Et4NBF4/CH3CN, , ''-linked polyterthiophene, 3',4'-Diamino-2,2':5',2''- terthiopene(L1), 3',4'-bis(2-iminomethylphenol)- 2,2':5',2''-terthiopene(L2), [NiCl(H2O)3 {3',4'-diamino-2,2':5',2''-terthiopene}] chloridehexahydrate(C1), [ZnCl2(H2O)2{3',4'diami no-2,2':5',2''-terthiopene }] dihydrate(C2), [2NiCl2H2O{3',4'-bis(2-iminomethylphenol)- 2,2':5',2''-terthiopene}] tetrahydrate(C3) and [Zn(NH3)2{3',4'-bis(2-iminomethylphenol)- 2,2':5',2''-terthiopene}] (C4 |
| Subjects: | Q Science > Q Science (General) Q Science > QD Chemistry |
| Divisions: | Africana |
| Depositing User: | Selom Ghislain |
| Date Deposited: | 18 Sep 2018 09:05 |
| Last Modified: | 18 Sep 2018 09:05 |
| URI: | http://thesisbank.jhia.ac.ke/id/eprint/5278 |
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