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Surendra Institute of Engineering and Management
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... By NIVEDITA BOSE Under the Guidance of Dr. USHARANI SUBUDDHI ... Page 2. CERTIFICATE This is ... more ... By NIVEDITA BOSE Under the Guidance of Dr. USHARANI SUBUDDHI ... Page 2. CERTIFICATE This is to certify that the dissertation entitled Interaction of a Cationic Dye Nile Bule A with Bile Salts being submitted by Nivedita Bose to the Department of Chemistry, National ...
Chemical Communications, 2011
Materials and methods: All the reagents and solvents were purchased from commercial sources and p... more Materials and methods: All the reagents and solvents were purchased from commercial sources and purified by standard protocol. [1] 1 H NMR spectra were obtained on a Bruker DPX-300 MHz NMR spectrometer and spectra were calibrated using TMS as the internal standard. TEM measurements were carried out in a JEOL-2010EX machine operating at an accelerating voltage of 200KV. Dynamic Light Scattering (DLS) measurements were carried out in Malvern instrument. Fluorescence emission spectra were recorded in a FluoroMax-3 spectrophotometer from Horiba Jobin Yvon. Molecular weight of a polymer was estimated in a Waters GPC machine with respect to polystyrene standard using RI detector and THF as eluent. Physical Studies: Determination of Critical Aggregation Concentration (CAC) of Polymer P2: CAC of P2 was estimated by fluorescence method using pyrene as a probe. Measured amount (20 μL) of stock solution of pyrene (0.1mM) in CH 2 Cl 2 was taken in different glass vials and the solvent was removed by blowing air. To each of these pyrene containing vials, varying amount of aqueous P2 solution (1mM) was added and then the final volume was adjusted with distilled H 2 O to get a series of solutions with constant pyrene concentration (1 x 10-6 M) and varying polymer concentration (0.3 mM to 0.002 mM). Each vial was sonicated for approximately 4-5 minutes and then allowed stand for 3 h before the emission spectra were recorded ( ex = 337nm, excitation band width 2.5 nm, emission band width 2.5 nm). The ratio of the emission intensities of the first (373 nm) and the
... By NIVEDITA BOSE Under the Guidance of Dr. USHARANI SUBUDDHI ... Page 2. CERTIFICATE This is ... more ... By NIVEDITA BOSE Under the Guidance of Dr. USHARANI SUBUDDHI ... Page 2. CERTIFICATE This is to certify that the dissertation entitled Interaction of a Cationic Dye Nile Bule A with Bile Salts being submitted by Nivedita Bose to the Department of Chemistry, National ...
Chemical Communications, 2011
Materials and methods: All the reagents and solvents were purchased from commercial sources and p... more Materials and methods: All the reagents and solvents were purchased from commercial sources and purified by standard protocol. [1] 1 H NMR spectra were obtained on a Bruker DPX-300 MHz NMR spectrometer and spectra were calibrated using TMS as the internal standard. TEM measurements were carried out in a JEOL-2010EX machine operating at an accelerating voltage of 200KV. Dynamic Light Scattering (DLS) measurements were carried out in Malvern instrument. Fluorescence emission spectra were recorded in a FluoroMax-3 spectrophotometer from Horiba Jobin Yvon. Molecular weight of a polymer was estimated in a Waters GPC machine with respect to polystyrene standard using RI detector and THF as eluent. Physical Studies: Determination of Critical Aggregation Concentration (CAC) of Polymer P2: CAC of P2 was estimated by fluorescence method using pyrene as a probe. Measured amount (20 μL) of stock solution of pyrene (0.1mM) in CH 2 Cl 2 was taken in different glass vials and the solvent was removed by blowing air. To each of these pyrene containing vials, varying amount of aqueous P2 solution (1mM) was added and then the final volume was adjusted with distilled H 2 O to get a series of solutions with constant pyrene concentration (1 x 10-6 M) and varying polymer concentration (0.3 mM to 0.002 mM). Each vial was sonicated for approximately 4-5 minutes and then allowed stand for 3 h before the emission spectra were recorded ( ex = 337nm, excitation band width 2.5 nm, emission band width 2.5 nm). The ratio of the emission intensities of the first (373 nm) and the