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Laboratory of Optical Spectroscopy
(ECD, ORD, VCD, UV-VIS-NIR, IR)

 
Head: Prof. Jadwiga Frelek
 
phone (022) 343 22 15, jadwiga.frelek@icho.edu.pl


ELECTRONIC CIRCULAR DICHROISM SPECTROSCOPY (ECD)

Analytical capabilities

  • Electronic circular dichroism measurements in solution, in nujol or in a solid state (KCl, KBr or CsI pellets) within the 163 nm to 1100 nm spectral range;
  • Solid-state measurements in reflectance and transmittance circular dichroism (DRCD/DTCD) mode;
  • Measurements of fluorescence detected circular dichroism (FDCD) at the constant temperature within the -10 °C to +110 °C temperature range with an accuracy of ± 0.1 °C;
  • Titration measurement with the ECD/UV-VIS and fluorescence detection (at the constant temperature);
  • Linear dichroism spectroscopy (LD);
  • HPLC separations with ECD (or OR) and UV-VIS (or RI) detection;
  • Measurements within the 50 °C to -196 °C temperature range, with ±0.1 °C stability and accuracy;
  • Measurements within the 25 °C to 250 °C temperature range, with ±1 °C stability and accuracy;
  • ECD kinetics measurements at the constant temperature within pre-assigned spectral range or at the selected wavelength.

Equipment

  • Spectropolarimeter ECD Jasco J-715;
  • Spectropolarimeter ECD Jasco J-815, for solid state measurements;
  • Peltier Cell Holder with Fluorescence Capability (-10 °C to 110 °C temperature range w/accuracy up to ±0.1 °C);
  • Automatic Titrator;
  • Cryostat Optistat, Oxford Instruments (-196 °C to 50 °C temperature range w/accuracy up to ±0.1 °C);
  • Thermostat Specac (25 °C to 250 °C temperature range w/accuracy up ±1 °C);
  • Recirculating thermostat Julabo (-88 °C to 100 °C temperature range w/accuracy up ±0.1 °C).


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OPTICAL ROTATORY DISPERSION (ORD)

Analytical capabilities

  • Optical rotatory dispersion measurements in solution within the 185 nm to 700 nm spectral range at the constant temperature;
  • Measurements within the -10 °C to 110 °C temperature range, with ±0.1 °C stability and accuracy;
  • ORD kinetics measurements at the constant temperature within pre-assigned spectral range or at the selected wavelength.

Equipment

  • Spectropolarimeter ORD Jasco J-815


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VIBRATIONAL CIRCULAR DICHROISM (VCD)

Analytical capabilities

  • Vibrational circular dichroism measurments in solution within the 4000 nm to 850 cm-1 spectral range;
  • Mesurment in solid-state (KBr/KCl pellet), in nujol mull or in form of a solution-deposited thin-film using rotating holder (SyncRoCell);
  • Temperature measurement in aqueous solution within the -4 °C to +80 °C temperature range, with ±0.1 °C stability and accuracy.

Equipment

  • ChiralIR-2X TM DualPEM BioTools spectrometer


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ULTRAVIOLET-VISIBLE AND NEAR-INFRARED SPECTROSCOPY (UV-VIS-NIR)

Analytical capabilities

  • Qualitative and quantitative measurements within 190 to 2700 nm (standard 190-900 nm) spectral range in solution, in nujol and in solid state (KCl, KBr or CsI pellet);
  • Measurements for solid state (powder, paste, thin film) and liquid samples, using integrating sphere attachement for both the diffuse-transmitted or diffuse-reflected light;
  • UV-VIS-NIR spectral measurements of kinetics within a defined spectral range or at a defined wavelength.
Equipment
  • Spectrophotometer UV-VIS-NIR Jasco V-670 (190-2700 nm spectral range);
  • Spectrophotometer UV-VIS Carry 100E (190-900 nm spectral range).


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INFRARED SPECTROSCOPY (IR)

Analytical capabilities

  • Qualitative and quantitative IR spectroscopy in 7800 to 350 cm-1 (standard 4000-400 cm-1) spectral range for samples in form of a solution-deposited thin-film, a liquid thin-film, a solution (IR cell), a nujol mull or KBr pellet.
  • Reflectance IR spectroscopy for liquid or solid samples using ATR accessory with diamond or zinc selenide crystal.
Equipment
  • Spectrophotometer FTIR Jasco 6200;
  • Spectrophotometer FTIR Spectrum 2000 Perkin Elmer.


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We offer also a possibility to carry out a non-standard measurements at Client's request after prior case-by-case consultation with our analytical staff. The analytical reports are delivered as a hard-copy printouts and/or as a computer files, in format acceptable to our Clients (such as txt, rtf, pdf or doc).