Cross-conjugation increases the conductance of meta-connected fluorenones

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-conju...

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Bibliographic Details
Published in:Nanoscale 2019-08, Vol.11 (29), p.13720-13724
Main Authors: Alanazy, Asma, Leary, Edmund, Kobatake, Takayuki, Sangtarash, Sara, González, M Teresa, Jiang, Hua-Wei, Bollinger, Gabino Rubio, Agräit, Nicolás, Sadeghi, Hatef, Grace, Iain, Higgins, Simon J, Anderson, Harry L, Nichols, Richard J, Lambert, Colin J
Format: Article
Language:English
Subjects:
Anthraquinones
Carbonyls
Charge transport
Conjugation
Resistance
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Summary: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.
ISSN:2040-3364
2040-3372
DOI:10.1039/c9nr01235d