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Molecular Conductance through a Quadruple‐Hydrogen‐Bond‐Bridged Supramolecular Junction
Author(s) -
Wang Lin,
Gong ZhongLiang,
Li ShuYing,
Hong Wenjing,
Zhong YuWu,
Wang Dong,
Wan LiJun
Publication year - 2016
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.201605622
Subject(s) - conductance , supramolecular chemistry , hydrogen bond , scanning tunneling microscope , electron transport chain , molecule , chemistry , molecular electronics , polarity (international relations) , solvent , break junction , chemical physics , crystallography , quantum tunnelling , nanotechnology , materials science , optoelectronics , condensed matter physics , organic chemistry , physics , biochemistry , cell
A series of self‐complementary ureido pyrimidinedione (UPy) derivatives modified with different aurophilic anchoring groups were synthesized. Their electron transport properties through the quadruple hydrogen bonds in apolar solvent were probed employing the scanning tunneling microscopy break junction (STMBJ) technique. The molecule terminated with a thiol shows the optimal electron transport properties, with a statistical conductance value that approaches 10 −3 G 0 . The 1 H NMR spectra and control experiments verify the formation of quadruple hydrogen bonds, which can be effectively modulated by the polarity of the solvent environment. These findings provide a new design strategy for supramolecular circuit elements in molecular electronics.