Depend of what you want, and what you have... IR is a molecular spectroscopy, so you can have information about the vibrational contributions of the nanomaterial, usually you will get a lot of info about the functional groups presents and the interaction of them. But you need to explore better you question, maybe even red some spectroscopy books... I would suggest Modern Spectroscopy, Hollas
Addition to Sergio's answer, The sample preparation (could be solid, liquid and gas....), for example solid material...it means you have to mix a small quantity of sample (1%) with KBr powder (99%) due to making a transparant - pellet before running IR test. In order to interpret the results someone need to know the functional groups appeared from the sample (kinds of bond in the sample) and also in the region of finger print (below 700 cm-1) ...you can implied the formation of metal - o - metal bond from your material prepared by comparing your data to IR reference's data. These information data can be used to conclude your aims were achieved.
normally for an compound, there is some of its own characteristic vibrational peaks in certain regions. when we synthesize the same compound in nanoscale there is a slight change in the bonding nature of the compound. this causes a shift in the FTIR peaks on comparison with bulk compound.
I supposed your sample is nanomaterial in solid phase. In this situation, better you prepare it as solid thin film coated on a solid support material (silicon wafer, glass etc) and then you employ ATR-FTIR to analyze it. After that, you can fallow a book of Spectrometric Identification of Organic Compounds, 4th.Edition, John Wiley & Sons, New York written by Silverstein, R.M.; Bassler, G.C. and Morril, T.C (1981) or the newest edition to interpret the generated spectra.
From this, you can get functional groups constructed the synthesized nanomaterial. The generated spectra can be interpret well without software at all, just follow the books and the similar references.
I agree with Dr. Kogikoski, it depends on what you want and what you have.
For example if you use any organic template for preparation of your sample, after completion of reaction you can find out is there any impurity or template left in your sample or not.
I suggest that you read some articles concerning the synthesis and characterization of nano materials.
Article A facile and eco-friendly synthesis of imidazo[1,2-a]pyridin...
Article Synthesis and characterization of micro-mesoporous MCM-41 us...