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Polymer ring formation by electron/hole injection from an STM tip into a C 60 close‐packed layer
Author(s) -
Nouchi Ryo,
Masunari Kosuke,
Ohta Toshio,
Kubozono Yoshihiro,
Iwasa Yoshihiro
Publication year - 2006
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.200669154
Subject(s) - polymer , depolymerization , polymerization , materials science , electron , scanning tunneling microscope , ring (chemistry) , scanning electron microscope , charge carrier , chemical physics , quantum tunnelling , layer (electronics) , fullerene , molecular physics , analytical chemistry (journal) , chemistry , nanotechnology , polymer chemistry , optoelectronics , composite material , organic chemistry , physics , quantum mechanics
Polymerization and depolymerization of C 60 molecules are induced by charge carrier injection from a scanning tunneling microscope tip into C 60 close‐packed layers. These reactions are hard to be achieved at single molecular precision because of a spatial spread of injected carriers. We report that the carrier‐spreading effect produces a ring‐shaped distribution of C 60 polymers around the carrier injection point. Formation of the polymer ring of C 60 is explained by energy dissipation of spreading carriers. Therefore, the polymer ring can be recognized as a direct reflection of carrier propagation. Subsequent electron or hole injections enlarge the ring. This result shows that both electrons and holes can induce both polymerization and depolymerization of C 60 molecules. (© 2006 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)