1. Division of Applied Physical Chemistry, Department of Chemistry, KTH Royal Institute of Technology, SE-100 44 Stockholm, Sweden
2. Department of Chemistry, Ångström Laboratory, Uppsala University, Box 523, SE-75120 Uppsala, Sweden
3. Flinders Centre for NanoScale Science and Technology (CNST), Flinders University, Adelaide 5042, Australia
4. Dyenamo AB, Greenhouse Labs, Teknikringen 38A, SE-114 28 Stockholm, Sweden