Professor Heeney is a Professor of Organic Materials Chemistry and Royal Society Wolfson Fellow at Imperial College London. He is a graduate of the University of East Anglia and received his PhD from the same institution in 1999 under the supervision of Professor Michael Cook. Following a postdoctoral position with a start-up company in the area of photodynamic therapy, he joined Merck Chemicals in 2000, eventually becoming project leader for the organic electronics team. He made the move to academia in 2007, joining the Materials Department at Queen Mary University of London as a senior lecturer. In 2009 he moved across London to join the Chemistry Department at Imperial College London.
His research interests are mainly in the area of organic electronics, with a focus on the design, synthesis and characterisation of solution processed materials for a variety of applications. He has published over 300 research papers, six book chapters and over 100 patents. In 2013 he was awarded the RSC Corday-Morgan Prize and from 2014–2018 he was named by Thomson Reuters as a HighlyCited researcher in the field of Materials Science.