TY - GEN AU - Sung,Jooyoung AU - Kim,Pyosang AU - Fimmel,Benjamin AU - Würthner,Frank AU - Kim,Dongho TI - Direct observation of ultrafast coherent exciton dynamics in helical π-stacks of self-assembled perylene bisimides SN - 2041-1723 PY - 2016///0125 N1 - Publication Type: Journal Article; Research Support, Non-U.S. Gov't UR - https://doi.org/10.1038/ncomms9646 ER -