Facilities available with the Radiation and Macro Molecular Chemistry Group


Fourier Transform Infrared Spectometer

Features
Two temperature-stabilized DTGS (Deuterated Triglycine Sulfate) detectors:
  • one optimized for MIR with an enhanced SNR of 15,000:1 peak-to-peak for a 5 second scan,
  • one suited for NIR with <10µA RMS noise over 250nm range for a 1 minute scan;

Optional liquid nitrogen cooled MCT (Mercury Cadmium Telluride) detector;

Optical system with KBr beam splitter for MIR for a spectral range 8,300 – 350 cm-1  at a best resolution of 0.4 cm-1

CaF2 beam splitter for a spectral range of 14,700 – 2,000 cm-1 at a best resolution of 0.5 cm-1



Standard AVC/APV/AVI; Standard gold optics; Standard KBr windows;

Option to include the Near Infrared Reflectance Accessory (NIRA).

Guidelines


Laser Raman Spectrometer (Model: Lab RAM HR-HORIBA)

Features
  • Laser: He-Ne (17mW), 632.8 nm;
  • Microscope: Olympus optical microscope;
    • Objectives: X10, X50, X100;
    • Detector: CCD;
    • Illumination: 2 modes (transmission & reflection); i
  • Spectrometer: 2 gratings: 600 and 1800


    • Steady-state cum Time Resolved Luminescence Spectrometer (HORIBA)

    		Features

    Fluorescence and Phosphorescence Decay
    Time Domain range: 200 ps to 0.1 ms;


    Time Resolved Emission Spectra (TRES);
    Time Resolved anisotropy;
    Steady state emission (fluorescence and phosphorescence);
    Excitation spectra;
    Polarization/Anisotropy spectra;
    Synchronous fluorescence spectra



    Spectrophotometer



    UV-Vis NIR Spectrophotometer
    • Scan Range: 175-3300 nm;
    • Resolution: 0.05 nm (UV/Vis) & 0.2 nm (NIR);
    • Accurancy: 0.08 nm (UV/Vis) & 0.3 nm (NIR)


    Perkin Elmer LS-55
  • Fluorescence & Phosphorescence;
    • Excitation: 200-800 nm;
    • Emission: 200-900 nm;
  • Accuracy: ±1.0 nm,
  • Bandpass: 2.5-20.0 nm;
  • Synchronous fluorescence;
  • Anisotropy & polarization measurement;
  • Low temperature luminescence


    • Malvern Nano-ZS, Dynamic Light Scattering




    		Features

    Size measurements
    • Size range: 0.6nm-6mm;

    Minimum sample volume: 1.2 ml;
    Concentration Range: 0.1 to 400 mg/ml



    Zeta potential:
    Minimum sample volume: 0.75 ml;
    Molecular weight : 1×103 to 1×107 Da



    PLC based Gamma irradiation System (GC 1200, Supplied by Board of Radiation & Isotope Technology, Mumbai)




    		Specifications
    • Co-source capacity     3700 Ci
    • Dose rate            6.8 kGy/hr
    • Irradiation Volume      1200 cc approx
    • Size of sample chamber   106(dia), 140(ht) mm
    • Shielding material       Lead and stainless Steel
    • Weight of the unit       3.1 tonne
    • Size of the unit         110(l),105(w),158(ht) cm
    • Time Range           6 seconds onwards
    • Dose rate uniformity
      • +25% or better radially;
      • -25% or better axially

    Features


    Safe and self-shielded;
    Automatic control of irradiation time;
    Control of irradiation temperature;
    Dose uniformity;
    Easy loading and unloading of samples


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