Journal
DESIGNED MONOMERS AND POLYMERS
Volume 15, Issue 2, Pages 159-174Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1163/156855511X615047
Keywords
Azo-polymers; amino-nitro-substituted azobenzene unit; oligo(ethylene glycol) spacers; Langmuir films
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Funding
- PAPIIT-DGAPA [IN105610, IN-118808]
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Four novel azo-polymers bearing oligo(ethylene glycol) spacers were synthesized and characterized. Monomers were prepared by esterification of the RED-PEG dyes previously synthesized by us: N-methyl-N-{4-[(E)-(4-nitrophenyl)diazenyl]phenyl}-N-(5-hydroxy-3-oxapentas-1-yl)amine (RED-PEG-2), N-methyl-N-{4-[(E)-(4-nitrophenyl) diazenyl] phenyl}-N-(8-hydroxy-3,6-dioxaoctas-1-yl)amine (RED-PEG-3), N-methyl-N-{4-[(E)-(4-nitrophenyl) diazenyl] phenyl}-N-(11-hydroxy-3,6,9-trioxaundecas-1-yl)amine (RED-PEG-4) and N-methyl-N-{4-[(E)-(4-nitrophenyl) diazenyl] phenyl}-N-(17-hydroxy-3,6,9,12,15-pentaoxaheptadecas-1-yl)amine (RED-PEG-6) with methacryloyl chloride. The obtained monomers (nPEGMAN series) were polymerized in the presence of AIBN in THF to give the corresponding azo-polymers (pnPEGMAN series). Also, Langmuir films were prepared with these polymers; the obtained monolayers exhibited good reversible behavior upon successive compression/expansion cycles. (C) Koninklijke Brill NV, Leiden, 2012
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