Variable-angle time-resolved evanescent wave-induced fluorescence spectroscopy (VATR-EWIFS): a technique for concentration profiling fluorophores at dielectric interfaces

Article Abstract:

A study was conducted to analyze the concentration distributions of fluorescein and acridine orange at a water/silica interface using variable-angle time-resolved evanescent wave-induced fluorescence spectroscopy. The aqueous solutions were prepared using distilled deionized water while concentrations were determined from absorbance measurements. Results indicated that the spectroscopy technique can be utilized to quantitatively determine the concentration depth distribution of simple dye molecules at water/silica interfaces.

Research, Stains (Microscopy), Molecular dynamics, Fluorescein, Acridine orange

---

Electric field effects on absorption and fluorescence spectra of trimethylsilyl- and trimethylsilylethynyl-substituted compounds of pyrene in a PMMA film

Article Abstract:

The electric field effects on absorption and fluorescence spectra of 1,3,6,8-tetrakis(trimethylsilyl)pyrene (TMSPy) and 1,3,6,8-tetrakis(trimethylsilylethynyl)pyrene (TMS(E)Py) in a poly(methyl methacrylate) (PMMA) film with varying temperatures and concentrations are examined. Studies have shown that only one species of the partially overlapping excimer is confirmed in TMSPy, whereas no partially overlapping excimer is confirmed in TMS(E)Py.

Spectra, Methyl groups, Methyl compounds

---

Dynamic and static fluorescence spectroscopy applied to miscibility of poly (n-butylmethacrylate-co-styrene) with polystyrene and morphological analysis by epifluorescence microscopy

Article Abstract:

An investigation was carried out to examine the microphase structure in blends of poly (n-butylmethacrylate-co-styrene) (nBMAS) and polystyrene (PS) by nonradiative energy transfer (NRET) using both steady-state fluorescence and time correlated single-photon counting (TCSPC) measurements. Intermolecular correlation among the donors and traps used to analyze the interchain structures in homogenous blends and in blends with phase separation.

Analysis, Methane, Intermolecular forces, Chemical properties

Similar abstracts:

• Abstracts: Combining optical trapping and single molecule fluorescence spectroscopy: enhanced photobleaching of fluorophores
• Abstracts: Simultaneous time- and wavelength-resolved fluorescence microscopy of single molecules. Diffusion bias and photophysical dynamics of single molecules in unsupported lipid bilayer membranes probed with confocal microscopy
• Abstracts: Micro-Raman spectroscopy of meso-tetrakis(p-sulfonatophenyl)porphine at electrode surfaces. Novel chemical sensor for cyanides: Boron-doped carbon nanotubes
• Abstracts: Electron magnetic resonance studies on the photoinduced charge separation of N-methylphenothiazine in the gel matrixes of phenyltriethoxysilane, vinyltriethoxysilane, and methyltriethoxysilane
• Abstracts: Catalytic reduction of alpha,omega-dihaloalkanes, X(CH2)mX (X = Cl, Br, or I and m + 2-8), by electrochemically generated C(sub 70)(super n-) (n = 2 or 3) in benzonitrile solutions

This website is not affiliated with document authors or copyright owners. This page is provided for informational purposes only. Unintentional errors are possible.