Infrared spectroscopy (IR spectroscopy or vibrational spectroscopy)
For determining the molecular structure, functional groups, types of chemical bonds and spatial configuration of chemical compounds.
Service description
Fourier transform infrared spectrometer (FTIR) Invenio-R (Bruker, Germany), covering the mid- and far-infrared regions of the spectrum (8000-80 cm-1) in absorption, transmission or reflection mode, with the capability to examine bulk solids, thin-film materials, powders and liquid samples. The instrument is also equipped with an ATR module with a diamond crystal for the direct examination of materials without sample preparation.
Description of activities
Equipment
BRUKER – INVENIO R infrared spectrometer
Spectrometer:
Computer-controlled FT-IR spectrometer, model INVENIO-R
- Hermetically sealed optics;
- Spectral range 80-6000 cm-1 ;
- Spectral resolution: < 0.4 cm-1 ;
- Signal-to-noise ratio (peak to peak, 1 min measurement time at a spectral resolution of 4 cm-1): >60000:1;
- Wavenumber accuracy: <0.005 cm-1
- Wavenumber precision: < 0.0005 cm-1
- Photometric accuracy / linearity: 0.1 % T;
- Choice of 13 fixed apertures;
- Interferometer scanning speed: 8 selectable speeds from 1 to 5 mm/s;
- Automatic recognition of accessories and modules when they are placed in the sample compartment;
ATR module
- Platinum-ATR module with a diamond crystal for solid, powder and liquid samples;
- Automatic recognition of the accessory type and the crystal;
- Spectral range: 10-10000 cm-1
- Working height: > 20 millimetres
- Adjustable pressure on the sample: 2.5 tonnes
Software
- Licensed SADTLER library with 1105 spectra of inorganic materials
Service location
Acad. G. Bonchev St., Bl. 10
Laboratory: Laboratory of Spectroscopy.
Equipment: BRUKER – INVENIO R infrared spectrometer
Contact persons: Chief Assist. Prof. Dr Denitsa Nicheva, d.vladimirova@iees.bas.bg;
Access to the Infrared Spectroscopy Laboratory
The Infrared Spectroscopy Laboratory is part of the research infrastructure of the National Centre of Excellence “Mechatronics and Clean Technologies” and is located on the Geo Milev campus. Requests for access and for joint research are therefore handled centrally — see Contacts. In addition, a full overview of the Centre’s other laboratories is available on the Infrastructure and Laboratories page.
The infrared spectroscopy equipment was established under project BG16RFPR002-1.014-0006, funded under the Programme “Research, Innovation and Digitalisation for Smart Transformation” 2021–2027 and co-financed by the European Union through the European Regional Development Fund.