Spectroscopic characterizations of the mixed Langmuir-Blodgett (LB) films of 2,2'-biquinoline molecules: evidence of dimer formation

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dc.creatorDeb, S.
dc.creatorBiswas, S.
dc.creatorHussain, S. A.
dc.creatorBhattacharjee, D.
dc.date2008-07-16
dc.date.accessioned2026-07-07T09:50:54Z
dc.date.available2026-07-07T09:50:54Z
dc.descriptionThis communication reports the -A isotherms and spectroscopic characterizations of mixed Langmuir and Langmuir-Blodgett (LB) films of nonamphiphilic 2, -biquinoline (BQ) molecules, mixed with polymethyl methacrylate (PMMA) and stearic acid (SA). The pi-A isotherms and molefraction versus area per molecule studies indicate complete immiscibility of sample (BQ) and matrix (PMMA or SA) molecules. This immiscibility may lead to the formation of microcrystalline aggregates of BQ molecules in the mixed LB films. The scanning electron micrograph gives the visual evidence of microcrystalline aggregates of BQ molecules in the mixed LB films. UV-Vis absorption, fluorescence and excitation spectroscopic studies reveal the nature of these microcrystalline aggregates. LB films lifted at higher surface pressure indicate the formation of dimer or higher order n-mers.
dc.description21 pages, 5 figures
dc.identifierhttps://arxiv.org/abs/0807.2664
dc.identifierhttp://arxiv.org/abs/0807.2664
dc.identifierChemical Physics Letters, Vol 405 (2005) 323-329
dc.identifierdoi:10.1016/j.cplett.2005.02.060
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/165105
dc.subjectMaterials Science
dc.titleSpectroscopic characterizations of the mixed Langmuir-Blodgett (LB) films of 2,2'-biquinoline molecules: evidence of dimer formation
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