Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/94382
Title: Novel heteroarylene polyazomethines: Their syntheses and characterizations
Authors: Ng, S.C. 
Chan, H.S.O. 
Wong, P.M.L.
Tan, K.L. 
Tan, B.T.G. 
Keywords: Furan
Polyazomethines
Thiophene
Issue Date: Sep-1998
Source: Ng, S.C.,Chan, H.S.O.,Wong, P.M.L.,Tan, K.L.,Tan, B.T.G. (1998-09). Novel heteroarylene polyazomethines: Their syntheses and characterizations. Polymer 39 (20) : 4963-4968. ScholarBank@NUS Repository.
Abstract: Novel thiophene or furan-containing polyazomethines were synthesized by chemical oxidative polymerization with ferric(III) chloride. The structures of the undoped and doped polymers were evaluated by FTir., elemental analysis, u.v.-vis spectrometry, X-ray photoelectron spectroscopy (XPS) and their thermal stability determined using thermogravimetric analysis (t.g.a.). The conductivities of the undoped polymers were less than 10-8 S cm-1, while those of the doped ones were in the range of 10-7 to 10-6 S cm-1. The low conductivity values were attributed to the low degree of conjugation in the polymers caused by non-planarity of the polymer chains. The thiophene-containing polymers underwent sulfur extrusion during polymerization, resulting in an interruption of conjugation in the polymer backbone with consequent diminished electrical conductivity. © 1998 Elsevier Science Ltd. All rights reserved.
Source Title: Polymer
URI: http://scholarbank.nus.edu.sg/handle/10635/94382
ISSN: 00323861
Appears in Collections:Staff Publications

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