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Cross-conjugation increases the conductance of meta-connected fluorenones

Author(s):

Asma Alanazy, Edmund Leary, Takayuki Kobatake, Sara Sangtarash, Maria T. González, Hua-Wei Jiang, Gabino Rubio-Bollinger, Nicolas Agrait, Hatef Sadeghi, Iain Grace, Simon J. Higgins, Harry L. Anderson, Richard J. Nichols, Colin J. Lambert

Journal:

Nanoscale

Year:

2019

Volume:

11

Pages

13720-13724

DOI:

10.1039/C9NR01235D

Abstract:

Charge transport is strongly suppressed by destructive quantum interference (DQI) in meta-connected 1,1′-biphenyl-containing molecules, resulting in low electrical conductance. Surprisingly, we have found that DQI is almost entirely overcome by adding a bridging carbonyl, to yield a cross-conjugated fluorenone. This contrasts with other π-systems, such as para-connected anthraquinone, where cross-conjugation results in low conductance.

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