Synthesis and nonlinear optical properties of functionalised polydiacetylenes and their complexes with transition metals

M. A. Camacho, Ajoy K. Kar, W. Edward Lindsell, Christopher Murray, Peter N. Preston, Brian S. Wherrett

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New polydiacetylenes (PDAs) have been prepared in which a ligating 2,2'- bipyridyl substituent is incorporated in the side-chain, 3a-d. The formation of complexes of these polymers, and of a related (diethylamino)alkyl substituted PDA 4, with transition metals has been studied. Coordination polymers containing nickel(II) 5a,b, copper(II) 5c,d, ruthenium(II) 6 and molybdenum(o) 7a-c have been formed and characterised spectroscopically by comparison with appropriate model coordination compounds, including species derived from corresponding monomeric 1,3-diynes 1. The nonlinear optical properties of PDA 4 and the coordination polymers 5-7 in solution have been investigated by the z-scan procedure. Values for the nonlinear absorption coefficient, a2, and the nonlinear refractive index, n2, have been derived and these are discussed in relation to the structures of the PDAs.

Original languageEnglish
Pages (from-to)1251-1256
Number of pages6
JournalJournal of Materials Chemistry
Issue number6
Publication statusPublished - 1999

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