1 Institute of Chemistry, College of Science, University of the Philippines Diliman, 1101, Quezon City, Philippines.
2 Department of Macromolecular Science and Engineering, Case Western Reserve University, Cleveland, OH, 44106, USA.
3 Department of Biomedical Engineering, Case Western Reserve University, Cleveland, OH, 44106, USA.
4 Department of Bioengineering, University of California, Berkeley, CA, 94720-1762, USA.
5 Department of Chemical and Biomolecular Engineering and Joint Institute for Advanced Materials, University of Tennessee, Knoxville, TN, 37996, USA.
6 Department of Macromolecular Science and Engineering, Case Western Reserve University, Cleveland, OH, 44106, USA. rca41@case.edu.
7 Department of Chemical and Biomolecular Engineering and Joint Institute for Advanced Materials, University of Tennessee, Knoxville, TN, 37996, USA. rca41@case.edu.
8 Center for Nanophase Materials and Sciences, Oak Ridge National Laboratory, Oak Ridge, TN, 37830, USA. rca41@case.edu.