نتایج جستجو برای: atr ftir

تعداد نتایج: 23635  

Journal: :Journal of the American Chemical Society 2004
Yongseok Jun X-Y Zhu

We demonstrate that ATR-FTIR spectroscopy can be used to record high-quality vibrational spectra of molecules at buried interfaces in metal-molecule-silicon and metal-molecule-metal junctions. This provides quantitative information on the structure and conformation of molecules at buried interfaces, an issue of critical importance to molecular electronics. In the model systems of Au on octadecy...

Journal: :Journal of colloid and interface science 2009
Sabrina Devouge Joséphine Conti Andréa Goldsztein Emmanuel Gosselin Alain Brans Michel Voué Joël De Coninck Fabrice Homblé Erik Goormaghtigh Jacqueline Marchand-Brynaert

Biosensors based on intrinsic detection methods have attracted growing interest. The use of Fourier transform infra-red (FTIR) spectroscopy with the attenuated internal total reflection (ATR) mode, in the biodetection context, requires appropriate surface functionalization of the ATR optical element. Here, we report the direct grafting of a thin organic layer (about 20 A depth) on the surface o...

2018

Submit Manuscript | http://medcraveonline.com Abbreviations: PMMA: Poly Methyl Methacrylate; TSMR: Thickness Shear Mode Resonator; IECOFS: Intrinsic Exposed Core Optical Fiber Sensor; ATR: Attenuated Total Reflectance; DTS: Distributed Temperature Sensor; CPSM: Cylindrical Phase Shift Migration Algorithm; ANNs: Artificial Neural Networks; MFL: Magnetic Flux Leakage; ICS: Internal Corrosion Sens...

2018

Submit Manuscript | http://medcraveonline.com Abbreviations: PMMA: Poly Methyl Methacrylate; TSMR: Thickness Shear Mode Resonator; IECOFS: Intrinsic Exposed Core Optical Fiber Sensor; ATR: Attenuated Total Reflectance; DTS: Distributed Temperature Sensor; CPSM: Cylindrical Phase Shift Migration Algorithm; ANNs: Artificial Neural Networks; MFL: Magnetic Flux Leakage; ICS: Internal Corrosion Sens...

2016
Katherine V. Oliver Annalisa Vilasi Amandine Maréchal Shabbir H. Moochhala Robert J. Unwin Peter R. Rich

Cystinuria is the commonest inherited cause of nephrolithiasis (~1% in adults; ~6% in children) and is the result of impaired cystine reabsorption in the renal proximal tubule. Cystine is poorly soluble in urine with a solubility of ~1 mM and can readily form microcrystals that lead to cystine stone formation, especially at low urine pH. Diagnosis of cystinuria is made typically by ion-exchange...

2016
Olimpio Montero Marta Velasco Aurelio Sanz-Arranz Fernando Rull

Differential profile of membrane lipids and pigments of a Synechococcus sp. cyanobacterial strain cells exposed to blue, green, red and white light are determined by means of liquid chromatography and mass spectrometry or diode array detection. Raman and ATR-IR spectra of intact cells under the diverse light wavebands are also reported. Blue light cells exhibited an increased content of photosy...

Journal: :Chemical communications 2005
Robin H A Ras Cliff T Johnston Robert A Schoonheydt

Octadecylammonium in monolayers transforms into a carbamate derivative, as observed by attenuated total reflection Fourier transform infrared (ATR-FTIR) spectroscopy and 13C nuclear magnetic resonance (NMR) spectroscopy.

Journal: :International Journal of Food Properties 2021

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...

Journal: :The Analyst 2015
Rui Lu Wen-Wei Li Abraham Katzir Yosef Raichlin Han-Qing Yu Boris Mizaikoff

Attenuated total reflection Fourier transform infrared (ATR-FTIR) spectroscopy using a special waveguide based on a silver halide fiber was used for probing the heat-induced secondary structure and conformation changes of bovine serum albumin (BSA). From the secondary derivative and the curve fitting of the obtained ATR-FTIR spectra, the changes of the BSA secondary structure with temperature w...

1999
Teketel Yohannes H. Neugebauer Niyazi S. Sariciftci S. Yi Samson A. Jenekhe

Fourier transform infrared (FTIR) spectroscopy is a powerful method to determine the doping induced structural changes and electronic band structure modifications of conjugated polymer films. Here, we report in situ attenuated total reflection (ATR) FTIR spectroelectrochemical results of reduction reactions (n-doping) of the conjugated ladder polymer polybenzimidazophenanthroline, BBL. The ATR-...

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