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Identification and Characterisation of Carbon Nanotubes Nanospectralyzer - Fluorescence Spectrometer

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Near-infrared band-gap fluorescence from individual semiconducting single-walled carbon nanotubes (SWNT) was discovered in 2002. The near-infrared emission spectra of nanotube samples serve as compositional "fingerprints." One can therefore use spectrofluorimetry to deduce detailed information about the compositions of bulk samples, which invariably contain mixtures of different species.

Applied Nanofluorescence has developed a specialized fluorimetric instrument designed specifically for SWNT analysis. This unique fluorimetric analyzer combines a compact, efficient optical system and sophisticated software that acquires and interprets the data. It allows users to easily and rapidly find the identities and amounts of specific semiconducting nanotubes in their bulk samples.

The Nanospectralyzer works with excitation wavelengths of 658nm and 785nm as standard. A third excitation wavelength can be user selected. NIR fluorescence and absorption are detected using a cooled InGaAs spectrometer. A CCD detector covering the VIS spectral range is available as an option. Minimal sample volume is only 200 µl, typical acquisition is 5 seconds.