Synthesis, electrical and optical properties of 5-indoline-2,3-dione derivatives with Co(II), Ni(II), Cu(II) metal complexes / Muneera Fatin Manan

Molecular organic semiconductor has attracted much attention because of its easy to synthesize but it has a weakness in terms of solubility. To overcome, Schiff base ligands and their metal complexes have been selected to test their electrical conductivity values as they are soluble in most organic...

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Main Author:	Manan, Muneera Fatin
Format:	Thesis
Language:	English
Published:	2014
Online Access:	http://ir.uitm.edu.my/id/eprint/17381/ http://ir.uitm.edu.my/id/eprint/17381/2/TM_MUNEERA%20FATIN%20MANAN%20AS%2014_5.pdf

id	uitm-17381
recordtype	eprints
spelling	uitm-173812018-10-25T02:08:54Z http://ir.uitm.edu.my/id/eprint/17381/ Synthesis, electrical and optical properties of 5-indoline-2,3-dione derivatives with Co(II), Ni(II), Cu(II) metal complexes / Muneera Fatin Manan Manan, Muneera Fatin Molecular organic semiconductor has attracted much attention because of its easy to synthesize but it has a weakness in terms of solubility. To overcome, Schiff base ligands and their metal complexes have been selected to test their electrical conductivity values as they are soluble in most organic solvents, facile synthesis and variety of economical starting materials. Yet, until now there are few reports on Schiff base metal complexes that have such properties and the involvement of the effects of substituted group towards the electrical conductivity. In this study, nine Schiff base ligands abbreviated as LI to L9 were synthesize from diketone precursors of isatin, 5- chloroisatin and 5-bromoisatin with different diamine. L1 to L3, L4 to L6 and L5 to L9 were derived from o-phenylenediamine, 4-nitro-o-phenylenediamine, and 4- chloro-o-phenylenediamine respectively. Six metal complexes which are CoL1, NiL1, CuL1, CoL2, CuL2 and CoL3 have been successfully synthesized. All the synthesized compounds were characterized by elemental analysis, NMR spectroscopy, Infrared spectroscopy, molar conductivity and magnetic susceptibility measurement. The Schiff base ligands behave as uninegatively charged bidendate ligands in metal complexes which coordinated to the metal via the azomethine nitrogen and the imino nitrogen atoms. Conductivity studies and the optical properties of these compounds were investigated to determine their conductivity value and energy band gap. The conductivity values obtained were placed between 10¯⁵10¯⁸Ω¯¹cm¯¹which in the range of semiconductor compound and the energy band gap of current OLED material, AIQ₃ (2.70eV) has been selected as a standard value. Based on the result, LI gives the lowest conductivity value (5.3416x10¯⁸Ω¯¹cm¯¹) and highest energy band gap (2.8826eV), while L5 gives highest conductivity value (1.5596x10¯⁶Ω¯¹cm¯¹) and lowest energy band gap (2.1903eV). L4 to L6 series gave high conductivity value and lowest energy band gap because the presence of nitro group. All metal complexes exhibit higher conductivity value and lower energy band gap compared with their respective Schiff base ligand. These findings present a beneficial basis to further apply in electronic industrial application as it will give a better or equivalence quality to improve the current semiconductor problems in terms of solubility and cost. Attempted works on synthesis of metal complexes from remaining Schiff base ligands were also reported. 2014 Thesis NonPeerReviewed text en http://ir.uitm.edu.my/id/eprint/17381/2/TM_MUNEERA%20FATIN%20MANAN%20AS%2014_5.pdf Manan, Muneera Fatin (2014) Synthesis, electrical and optical properties of 5-indoline-2,3-dione derivatives with Co(II), Ni(II), Cu(II) metal complexes / Muneera Fatin Manan. Masters thesis, Universiti Teknologi MARA.
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Teknologi MARA
building	UiTM Institutional Repository
collection	Online Access
language	English
description	Molecular organic semiconductor has attracted much attention because of its easy to synthesize but it has a weakness in terms of solubility. To overcome, Schiff base ligands and their metal complexes have been selected to test their electrical conductivity values as they are soluble in most organic solvents, facile synthesis and variety of economical starting materials. Yet, until now there are few reports on Schiff base metal complexes that have such properties and the involvement of the effects of substituted group towards the electrical conductivity. In this study, nine Schiff base ligands abbreviated as LI to L9 were synthesize from diketone precursors of isatin, 5- chloroisatin and 5-bromoisatin with different diamine. L1 to L3, L4 to L6 and L5 to L9 were derived from o-phenylenediamine, 4-nitro-o-phenylenediamine, and 4- chloro-o-phenylenediamine respectively. Six metal complexes which are CoL1, NiL1, CuL1, CoL2, CuL2 and CoL3 have been successfully synthesized. All the synthesized compounds were characterized by elemental analysis, NMR spectroscopy, Infrared spectroscopy, molar conductivity and magnetic susceptibility measurement. The Schiff base ligands behave as uninegatively charged bidendate ligands in metal complexes which coordinated to the metal via the azomethine nitrogen and the imino nitrogen atoms. Conductivity studies and the optical properties of these compounds were investigated to determine their conductivity value and energy band gap. The conductivity values obtained were placed between 10¯⁵10¯⁸Ω¯¹cm¯¹which in the range of semiconductor compound and the energy band gap of current OLED material, AIQ₃ (2.70eV) has been selected as a standard value. Based on the result, LI gives the lowest conductivity value (5.3416x10¯⁸Ω¯¹cm¯¹) and highest energy band gap (2.8826eV), while L5 gives highest conductivity value (1.5596x10¯⁶Ω¯¹cm¯¹) and lowest energy band gap (2.1903eV). L4 to L6 series gave high conductivity value and lowest energy band gap because the presence of nitro group. All metal complexes exhibit higher conductivity value and lower energy band gap compared with their respective Schiff base ligand. These findings present a beneficial basis to further apply in electronic industrial application as it will give a better or equivalence quality to improve the current semiconductor problems in terms of solubility and cost. Attempted works on synthesis of metal complexes from remaining Schiff base ligands were also reported.
format	Thesis
author	Manan, Muneera Fatin
spellingShingle	Manan, Muneera Fatin Synthesis, electrical and optical properties of 5-indoline-2,3-dione derivatives with Co(II), Ni(II), Cu(II) metal complexes / Muneera Fatin Manan
author_facet	Manan, Muneera Fatin
author_sort	Manan, Muneera Fatin
title	Synthesis, electrical and optical properties of 5-indoline-2,3-dione derivatives with Co(II), Ni(II), Cu(II) metal complexes / Muneera Fatin Manan
title_short	Synthesis, electrical and optical properties of 5-indoline-2,3-dione derivatives with Co(II), Ni(II), Cu(II) metal complexes / Muneera Fatin Manan
title_full	Synthesis, electrical and optical properties of 5-indoline-2,3-dione derivatives with Co(II), Ni(II), Cu(II) metal complexes / Muneera Fatin Manan
title_fullStr	Synthesis, electrical and optical properties of 5-indoline-2,3-dione derivatives with Co(II), Ni(II), Cu(II) metal complexes / Muneera Fatin Manan
title_full_unstemmed	Synthesis, electrical and optical properties of 5-indoline-2,3-dione derivatives with Co(II), Ni(II), Cu(II) metal complexes / Muneera Fatin Manan
title_sort	synthesis, electrical and optical properties of 5-indoline-2,3-dione derivatives with co(ii), ni(ii), cu(ii) metal complexes / muneera fatin manan
publishDate	2014
url	http://ir.uitm.edu.my/id/eprint/17381/ http://ir.uitm.edu.my/id/eprint/17381/2/TM_MUNEERA%20FATIN%20MANAN%20AS%2014_5.pdf
first_indexed	2023-09-18T22:58:11Z
last_indexed	2023-09-18T22:58:11Z
_version_	1777417995044257792

Synthesis, electrical and optical properties of 5-indoline-2,3-dione derivatives with Co(II), Ni(II), Cu(II) metal complexes / Muneera Fatin Manan

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