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Routine DART-MS analysis of low solubility, high molecular weight compounds

BioChromato show how their ionRocket sample preparation device, used in combination with Direct Analysis in Real Time Mass Spectrometry (DART®-MS), enables routine analysis of low solubility, high molecular weight compounds. Phthalocyanine-based pigments are widely used for organic semiconductors and organic electroluminescence displays due to their clearness, high light stability and durability. However, the chemical structure of phthalocyanine-based pigments is difficult to analyse due to their high molecular weight and low solubility. This application report provides data illustrating how DART®-MS with ionRocket sample introduction enabled structural information to be determined concisely and rapidly. The analysis was done under atmospheric conditions, and without pre-treatment.

The BioChromato ionRocket is a temperature-heating device for direct thermal desorption and pyrolysis of samples, prior to ionisation and analysis by mass spectrometry. Using ionRocket a temperature gradient from ambient up to 600 °C can be achieved in just a few minutes. This enables insoluble, high molecular weight materials to be pyrolysed and then introduced into the DART®-MS gas stream.