The cellulosic fabrics bearing the porphyrin as a photo-sensitizer were done in order to prepare efficient polymeric materials for antimicrobial applications. The obtained porphyrin-grafted cellulosic fabrics were characterized by ATRFTIR, DRUV spectroscopy, TG and SEM image. The antimicrobial activity of the products was tested under visible light irradiation against Staphylococcus aureus, Pse...

Modifications of phenylalanine amino acid after its exposure to near-infrared (NIR) radiation have been investigated using ATRFTIR (Attenuated Total Reflectance-Fourier Transform Infrared Spectroscopy). The process of amino acid aggregation after its exposure to NIR has been observed. A possible mechanism of amino acid dimer formation has been proposed with the help of theoretical calculations ...

Gelatin-eudragit L100 nanoparticles of wet size range 170-563nm were prepared by two step dissolvation method and the effect of different concentrations of eudragit L100 and emulsifying agent sodium lauryl sulphate (SLS) on the particle size were studied. Synthesized nanoparticles were characterized by attenuated total reflectance-fourier transform infrared spectroscopy (ATRFTIR) and the mean s...

Esterified kraft lignins (KL) were prepared by reaction with maleic anhydride (MA), succinic anhydride (SA), and phthalic anhydride (PA) in acetone solutions. The esterified lignins were characterized using ATRFTIR, solid state CP-MAS 13C NMR spectroscopy, thermogravimetric analysis (TGA), and differential scanning calorimetry (DSC). PA modification resulted in the highest weight gain percent (...

The cationic (1,3,5-triazapentadiene)Pt(II) complex [Pt{NH[double bond, length as m-dash]C(N(CH2)5)N(Ph)C(NH2)[double bond, length as m-dash]NPh}2]Cl2 ([]Cl2) was crystallized from four haloalkane solvents giving [][Cl2(CDCl3)4], [][Cl2(CHBr3)4], [][Cl2(CH2Cl2)2], and [][Cl2(C2H4Cl2)2] solvates that were studied by X-ray diffraction. In the crystal structures of [][Cl2(CDCl3)4] and [][Cl2(CHBr3...

The Attenuated Total Reflectance Fourier Transform InfraRed (ATR-FTIR) spectroscopy has been very early applied for studying biofilms, in situ, nondestructively, in real time, and under fully hydrated conditions. Because its analysis depth is very thin, typically of the order of 1-2 μm, the ATR-FTIR technique is an interesting tool for monitoring in situ, via the ATR-FTIR fingerprints of biomol...

Objective: To study the role of peroxynitrite-modified human serum albumin (nitroxidized-albumin) in rheumatoid arthritis. Methods: Human serum albumin was exposed to peroxynitrite and changes in albumin structure were monitored by UV-visible, fluorescence and circular dichroism spectroscopy, thioflavin T, Congo red binding and attenuated total reflection-Fourier transformed infrared spectrosco...

A rapid method for the quantitative determination of iodine value (IV) and acid value (AV) of red fruit oil (RFO) using FTIR spectroscopy and multivariate calibration of partial least square (PLS) is described. A calibration standard was developed using a series of RFO subjected to thermal treatment at without heating (ambient temperature); 100oC, 150oC, 180oC, 200oC and 300oC, respectively. Ba...

This work focuses on the interaction of water vapor with ionic liquids (ILs) consisting of [CnMIM] + (n = 2, 4, or 6) cations paired with Cl− or BF4 − anions to examine the effect of alkyl chain length on IL hygroscopicity. Tandem nanodifferential mobility analysis (TDMA) and attenuated total reflectance-Fourier transform infrared (ATRFTIR) spectroscopy were used to study IL nanoparticles and t...