Conjugated organic and organoboron materials

A series of compounds containing one or more dimesitylboryl groups (mesityl = 2,4,6-trimethylphenyl) has been synthesised. Triarylboranes were synthesised by reaction of dimesitylfluoroborane with an appropriate lithium reagent. Dimesitylvinyl boranes were synthesised by the hydroboration of an appropriate terminal alkyne with dimesitylborane. Compounds were characterised by standard analytical techniques, and investigated by single crystal X-ray diffraction, optical, thermal and electrochemical methods. The aim of the research was to determine whether such compounds might be useful in the field of organic electronics. In addition, the compound dimesitylborane has been investigated by NMR techniques, which have shown it to exist as a monomer 一 dimer equilibrium in solution, and the structure of the dimer in the solid state has been more accurately determined using neutron diffraction.