title: Spectroscopic studies of 2-(2-bromo-ethyl)-6-nitro-benzo[de]isoquinolene-1,3-dione in water/alkanol mixed solvents and nonionic micelle of Igepal CO series.
abstract: Spectroscopic studies of newly synthesized bioactive compound 2-(2-bromo-ethyl)-6-nitro-benzo[de]isoquinolene-1,3-dione (BNBIO) have been carried out in polar aprotic solvent, viz. acetonitrile, tetrahydrofuran, 1,4-dioxan, ethylene glycol, dimethyl formamide, and polar protic solvent, viz. methanol, ethanol, propanol, water. Variation in absorbance of BNBIO in water-methanol, water-ethanol and water-propanol mixtures at their different compositions have been observed. Absorption behaviour of the dye has been studied in poly(oxyethylene) nonylphenol surfactants Igepal CO 630, Igepal CO 720 and Igepal CO 890 containing same hydrophobic tail and different numbers of poly(oxyethylene) groups. Experimental results of the BNBIO nonionic micelles have been explained in terms of 1:1 electron donor-acceptor (EDA) complexation and the complexation equilibrium becomes suppressed with increasing number of poly(oxyethylene) residue on the Igepal surfactant. Variation in binding constant of dye-micelle complexation has been rationalized considering a competitive equilibrium process between the BNBIO-water interactions.
authors.affiliation: Department of Chemistry, Jadavpur University, Kolkata 700032, India.
authors.forename: Paltu
authors.initials: P
authors.lastname: Banerjee
authors.forename: Sujan
authors.initials: S
authors.lastname: Chatterjee
authors.forename: Smritimoy
authors.initials: S
authors.lastname: Pramanik
authors.forename: Sk Ugir
authors.initials: SU
authors.lastname: Hossain
authors.forename: Sudin
authors.initials: S
authors.lastname: Bhattacharya
authors.forename: Subhash Chandra
authors.initials: SC
authors.lastname: Bhattacharya
mesh_terms: D000438:Alcohols / Q000737:chemistry*; D007700:Kinetics; D008823:Micelles; D009574:Nitro Compounds / Q000737:chemistry*; D011092:Polyethylene Glycols / Q000737:chemistry*; D015363:Quinolones / Q000737:chemistry*; D012997:Solvents / Q000737:chemistry*; D013056:Spectrophotometry, Ultraviolet; D013696:Temperature; D014867:Water / Q000737:chemistry*
chemical_list: C519784:2-(2-bromo-ethyl)-6-nitro-benzo(de)isoquinolene-1,3-dione; D000438:Alcohols; D008823:Micelles; D009574:Nitro Compounds; D015363:Quinolones; D012997:Solvents; D014867:Water; D011092:Polyethylene Glycols