The use of the attenuated total reflectance (ATR) technique to perform time-resolved FTIR spectroscopy analysis of the synthesis of SBA-15 silicate is reported. This spectroscopy is a powerful technique to investigate the assembly of surfactants and silicate species as well as surfactant micellization, as infrared bands are sensitive to local polarity and conformation of the surfactant chains. ...

This study aimed to develop an optimized depot injectable atorvastatin (ATR) biodegradable in situ gel (ISG) system with minimum initial burst using a central composite design. The factors selected were poly (d, l-lactide-co-glycolide) (PLGA) concentration (X1), molecular weight of polyethylene glycol (PEG) (X2), and PEG concentration (X3). The independent variables were the initial burst of AT...

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...

Background: The recent development of attenuated total internal reflectionFourier transform infrared (ATR-FTIR) spectroscopy has provided a new avenue for distinguishing cancerous tissue from normal one. The focus of this investigation is to develop a novel spectral discriminant method for thyroid malignant and benign samples, intraoperatively. Methods: A total of 112 cases of human thyroid tis...

purpose: to compare the optical properties of hydrophilic and hydrophobic intraocular lenses (iols) containing uv-absorber and to determine their chemical composition. methods: optical properties of different foldable hydrophilic and hydrophobic as well as non-foldable hydrophobic polymethylmetacrylate (pmma) iols were evaluated in three powers of 15, 22 and 25 diopters. optical properties were...

The objective of this study was to characterize the insoluble and soluble dietary fiber present in Argentine Italian artichoke (Cynara scolymus) by-products by comparing chemical analysis ATR-FTIR spectroscopy. Non-edible bracts (AR) (Benevento (BN) Sicily (SC)) cultivars were employed. fibers extracted physical procedures determined chemical, attenuated total reflection Fourier transform infra...

A novel analytical platform combining infrared attenuated total reflection (IR-ATR) spectroelectrochemistry (SE) with atomic force microscopy (AFM) using a boron-doped diamond (BDD)-modified ATR crystal is presented. The utility of this combination is demonstrated investigating the electrodeposition of a polymer film via IR spectroscopy, while the surface modification is simultaneously imaged b...

This communication presents a novel label-free biosensing method to monitor DNA hybridization via infrared attenuated total reflection (IR-ATR) spectroscopy using surface-modified ZnSe waveguides. Well-defined carboxyl-terminated monolayers were formed at H-terminated ZnSe by direct photochemical activation. Chemical activation of the acidic function was obtained by using succinimide/carbodiimi...