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Unformatted text preview: LDIAZENYL)PHENYLLIMINO)METHYL)PHENOL AND THEIR COPPER(II) COMPLEXES Boon-Teck Heng and Guan-Yeow Yeap Liquid Crystal Research Laboratory, School of Chemical Sciences, Universiti Sains Malaysia, 1180 0 Pulau Pinang, Malaysia E-mail: [email protected] A new homologous series of bidentate Schiff base ligands, 5 -(alkoxy)-2-((4(phenyldiazenyl)phenylimino)methyl)phenol and their copper(II) complexes have been synthesized and characterized by elemental analysis, FT-IR, and 1D NMR spectroscopy. The ligands are subsequently reacted with copper(II) acetate monohydrate leading to the formation of copper(II) complexes. Spectrocopy studies have proposed the presence of Cu -O and Cu-N coordination modes in these complexes. The mesomorphic behavior of these compounds was studied by using polarizing optical microscope equipped with a heating and cooling stage. All the ligands and copper(II) complexes in this series are enantiotropic. The ligands with n -octyloxy and n-decyloxy flexible chains are found to exhibit interesting nematic (N) and orthogonal smectic A (SmA) phase, while the complexes showed orthogonal SmA phase only. Besides that, the coordination with copper leads to thermally stable metallomesogens possessing larger mesomorphic range in comparison to that observed for uncoordinated ligands. ORG-P22 THE EFFECT OF BALAU WOOD EXTRACT ON THE WHITE ROT FUNGI ( Phanerochaete chrysosporium)
1 Iskandar, Ahmad Md. Nor, Abdul Khalil Shawkatali 2 3 Faculty of Mechanical Engineering, Syiah Kuala University, Aceh School of Chemical Sciences, Universiti Sains Malaysia, 11800 Pulau Pinang, Malaysia 3 School of Technology Industry, Universiti Sains Malaysia, 11800 Pulau Pinang, Malaysia E-mail: [email protected]
2 1 The objective of this research was to study the effect of the balau wood ( Shorea spp.) extract using different solvent with different concentration on the white rot fungi (Phanerochaete chrysosporium). For that purpose 3 solvents were used in sequence to extract the wood that are acetone, pentane and mixture of hexane: acetone: water (HAW) with v...
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This note was uploaded on 02/17/2011 for the course CHEMISTRY 101 taught by Professor Csr during the Spring '11 term at University of Louisville.
- Spring '11