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On‐Surface Reactive Planarization of Pt(II) Complexes
Author(s) -
Ren Jindong,
Cnudde Marvin,
Brünink Dana,
Buss Stefan,
Daniliuc Constantin G.,
Liu Lacheng,
Fuchs Harald,
Strassert Cristian A.,
Gao HongYing,
Doltsinis Nikos L.
Publication year - 2019
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.201906247
Subject(s) - scanning tunneling microscope , chemistry , chemical mechanical planarization , density functional theory , crystallography , bond cleavage , moiety , metal , monolayer , stereochemistry , materials science , nanotechnology , catalysis , computational chemistry , biochemistry , organic chemistry , layer (electronics)
A series of Pt(II) complexes with tetradentate luminophores has been designed, synthesized, and deposited on coinage metal surfaces with the aim to produce highly planar self‐assembled monolayers. Low‐temperature scanning tunneling microscopy (STM) and density functional theory (DFT) calculations reveal a significant initial nonplanarity for all complexes. A subsequent metal‐catalyzed separation of the nonplanar moiety at the bridging unit via the scission of a C−N bond is observed, leaving behind a largely planar core complex. The activation barrier of this bond scission process is found to depend strongly on the chemical nature of both bridging group and coordination plane, and to increase from Cu(111) through Ag(111) to Au(111).