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Higher Acenes by On‐Surface Dehydrogenation: From Heptacene to Undecacene
Author(s) -
Zuzak Rafal,
Dorel Ruth,
Kolmer Marek,
Szymonski Marek,
Godlewski Szymon,
Echavarren Antonio M.
Publication year - 2018
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201802040
Subject(s) - scanning tunneling microscope , dehydrogenation , molecule , chemical physics , chemistry , atomic force microscopy , scanning tunneling spectroscopy , annealing (glass) , spectroscopy , benzene , quantum tunnelling , nanotechnology , pentacene , materials science , optoelectronics , organic chemistry , physics , catalysis , quantum mechanics , composite material , thin film transistor , layer (electronics)
A unified approach to the synthesis of the series of higher acenes up to previously unreported undecacene has been developed through the on‐surface dehydrogenation of partially saturated precursors. These molecules could be converted into the parent acenes by both atomic manipulation with the tip of a scanning tunneling and atomic force microscope (STM/AFM) as well as by on‐surface annealing. The structure of the generated acenes has been visualized by high‐resolution non‐contact AFM imaging and the evolution of the transport gap with the increase of the number of fused benzene rings has been determined on the basis of scanning tunneling spectroscopy (STS) measurements.