Engineering Multi-arm Homopolymer using Cyclopolymerization for Enhancing Conductivity and Hydrophobicity

Manikandan, M. (2018) Engineering Multi-arm Homopolymer using Cyclopolymerization for Enhancing Conductivity and Hydrophobicity. Masters thesis, Indian Institute of Science Education and Research Kolkata.

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Abstract

A new multi-arm homopolymer based on 1,6-heptadiyne derivative to with a conjugated polyacetylene backbone targeting higher conductivity and enhanced hydrophobicity has been synthesized by cyclopolymerization using Hoveyda Grubbs’ 2nd generation catalyst. 4-aminomethyl benzoate was attached to both the arms of 1,6-heptadiyne backbone through an amide bond to enhance the hydrophobicity of the material. Even though various techniques were reported for improving hydrophobicity of conducting polymers, direct incorporation a hydrophobic moiety covalently to the polymer side chain opens up the possibility of tuning hydrophobicity inherently by controlling the micro and nano structure of the material more effectively. The extra electron density produced by the bulky substituents and the amide bond is expected to enhance the conductivity also. All synthesized compounds were characterized using ¹H NMR, ¹³C NMR and FT-IR spectroscopy. Polymerization was confirmed through APC and studied the polymer properties using FT-IR spectroscopy, UV-vis spectroscopy and FE-SEM.

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