Effect of synthesis temperature and alkoxy side chain length on molecular structure and photoelectrochemical properties of terthiophenes
The photoelectrochemical properties of the alkoxy-substituted terthiophenes poly(4,4"dimethoxy-3'-methyl-2,2':5',2" terthiophene) (PDM) and poly(4,4"dipentoxy-3'-methyl-2,2':5',2" terthiophene) (PDP) have been investigated in terms of the influence of side chain length. Cyclic voltammetry and UV-Vis experiments have suggested that the synthesis temperature affects the molecular organization in different ways and, thus it should not be used as a general rule. The more efficient light harvesting of PDM, results from its improved molecular π-stacking. Due to its short side chain, PDM presents a large chain interaction, which favors electron hopping and the polymer conductivity.
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| Main Authors: | , |
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| Format: | Digital revista |
| Language: | English |
| Published: |
Sociedade Brasileira de Química
2009
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| Online Access: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532009000200006 |
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