Online measurement of photoisomerisation efficiency in solution using ion mobility mass spectrometry

James N. Bull, Eduardo Carrascosa, Michael S. Scholz, Neville J.A. Coughlan, Evan J. Bieske

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)


The photoisomerisation of charged molecules in solution is probed directly using ion mobility mass spectrometry with electrospray ionisation. The technique is demonstrated using a prototype azoheteroarene cation in methanol. By scanning the wavelength of the excitation light while monitoring the photoisomer intensity a photoisomerisation action spectrum is generated, which, when compared with a conventional absorption spectrum, allows the relative photoisomerisation quantum yield to be determined across a range of wavelengths.

Original languageEnglish
Pages (from-to)2100-2103
Number of pages4
Issue number12
Early online date17 May 2017
Publication statusPublished - 21 Jun 2017

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