Fail Fourier transformed Infrared spectroscopy

Leufgen et al. [82] reported the investigation of a template-assembled synthetic protein (TASP) conformation and its orientation in self-assembled monolayers (SAM) by means of TOF-SIMS. In this study, both the presence and molecular orientation of the TASP molecule can be monitored by TOF-SIMS, and furthermore, the influence of self-assembly protocols on the TASP molecular surface orientation can be studied by TOF-SIMS, although Fourier transform infrared spectroscopy (FTIR) and surface plasmon resonance (SPR) fail in this case. 

Ceckiewicz, in Fourier transform infrared spectroscopy (FTIR) studies of methanol sorption on zeolite at 25 50°C, observed the propylene band pattern but failed to detect ethylene [96]. Upon temperature-programmed desorption, however, C -C olefins were identified. In the suggested MTO scheme (Fig. 16), the propylene was nominated as a primary product (ie, obtained directly from MeOH or DME), and the formation of the other products occurs via two parallel routes. 

Diffuse reflection spectroscopy, also known as diffuse reflectance infrared Fourier transform (DRIFT) spectroscopy, enables the analysis of many samples for which traditional techniques fail, to be made with little or no sample preparation. Many substances in their natural. state. e.spe-cially powders but also any solid with a rough surface, such as dyed textiles and printed papers, exhibit diffuse reflection, i.e., incident light is... 

While vibrational in situ methods such as Fourier transform infrared (FTIR) and Raman spectroscopy are excellent tools for monitoring the formation of organic intermediates and vibrations of molecular moieties in the catalyst lattice and/or svuface, these techniques usually fail to detect changes of structure and valence states of transition metal ions (TMI), which are very often part of the active sites... 

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