1. Centre
for Plastic Electronics, Department of Chemistry, Imperial College London, Exhibition Road, London SW7 2AZ, U.K.
2. Department
of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts
Avenue, Cambridge, Massachusetts 02139, United States
3. SPECIFIC,
College of Engineering, Swansea University, Bay Campus, Swansea SA1
8EN, U.K.
4. Department
of Chemical Engineering, Stanford University, 443 Via Ortega, Stanford, California 94305, United States
5. SPERC,
Physical Sciences and Engineering Division, King Abdullah, University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia