dear colleague

i am not specialist in this technique but i know it is very powerful as it allows obtaining of absorption spectra, Raman spectra (IR), photoconductivity and so on. then please give more details may be one can help you

regards

Dear Rakibul Hassan , the peaks or bands of a FTIR spectrum provide information about the vibrational modes of chemical groups present on your sample. FTIR is useful to identify new or unknown materials based on their spectra and also to detect contaminants, additives or to detect decomposition products of your material caused by material use or exposure to environmental conditions or working conditions.

The technique is also useful to study structural variations of semicrystalline polymers and to identify polymorphic materials among many other applications.

Hope it helps.

DEAR RAKIBUL HASSAN, AS MANUEL GÓMEZ SAID, THE FTIR TECHNIQUE HELPS TO IDENTIFY FUNCTIONAL GROUPS OF COMPOUND WHICH GIVE YOU TO KNOW THE COMPOSITION BASED ON VIBRATIONAL MODES THAT MOLECULE EXPERIMENT WHEN INFRARED RADIATION IS APPLIED TO A MATERIAL, ABOUT OTHER INFORMATION THAT CAN BE OBTAINED, THE STEREOCHEMISTRY OF SOME COMPOUNDS CAN BE DEFINED, FOR INSTANCE IN A DIENE THE CIS OR TRANS CONFIGURATION OR SOME CRYSTALLINITY CAN BE DETERMINED BY MEANS FTIR.

FTIR peaks arise from vibration of bonded atoms or molecules .. you can find spring constant for the bonds ... Using frequency relation

Dear R. Hasan FT-IR conveys mostly about the functional groups present (by means mode of vibrations)but apart from that this technique can be used for various field as per requirement like food,pharmaceutical,geology,chemistry,materials etc.

Kindly refer following paper

Article Application of Fourier transform infrared (FTIR) spectroscop...

FTIR spectroscopy is the one of best method to characterize functional groups, bonding types, nature of compounds and lot more information.

FTIR spectroscopy most frequently used for characterize bonding type of molecules and also some organic material with nanoparticles.

FTIR is a technique used to obtain an infrared spectrum of absorption or emission of your material and used to identify organic, polymeric, inorganic like chemical properties of your sample.

FTIR technique is used to analyze functional groups and chemicals present in the prepared samples.

Dear

Every molecule has its on vibrational frequency based on its interaction with infrared rays. This uniqueness of this method helps us to identify the different types of functional groups present in our sample. It gives the data in between wavenumber corresponding to the molecules vibrational frequency upon transmittance through them.

Thanks