2005/03/11 by Suman Deb, S. Deb, S. Biswas +5 · 1 citation
Biochemistry, Genetics and Molecular Biology · Engineering · Materials Science · Physics and Astronomy · #Lipid Membrane Structure and Behavior #Organic Electronics and Photovoltaics #Porphyrin and Phthalocyanine Chemistry #cond-mat.mtrl-sci
paper · pdf · doi:10.1016/j.cplett.2005.02.060
published as Chemical Physics Letters, Vol 405 (2005) 323-329 · 21 pages, 5 figures
openalex publication_date 2005/03/11 · arxiv created 2008/07/16 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
This 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.