Helical molecular redox actuators with pancake bonds?

Verfasser / Beitragende:
[Pierre Beaujean, Miklos Kertesz]
Ort, Verlag, Jahr:
2015
Enthalten in:
Theoretical Chemistry Accounts, 134/12(2015-12-01), 1-10
Format:
Artikel (online)
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024 7 0 |a 10.1007/s00214-015-1750-3  |2 doi 
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245 0 0 |a Helical molecular redox actuators with pancake bonds?  |h [Elektronische Daten]  |c [Pierre Beaujean, Miklos Kertesz] 
520 3 |a In an attempt to design molecular electromechanical actuators with large deformation response, we present here three helicene-like compounds, which offer significant strain above 5% due to two-electron charge transfer (CT). The shrinking induced by CT is a quantum mechanical orbital effect. A good π-π overlap across the helical pitch is critical for this type of actuation. The relevant overlap refers to frontier orbitals that are involved in the CT, and it has some features common with π-π stacking pancake bonds; however, these molecules do not represent all aspects of typical pancake bonding. This overlap is accompanied by a change in the bond length alternation pattern indicating significant change in π-conjugation. Additionally, two further helicene-like molecules included in this study also indicate large electromechanical actuation, but a simple orbital interpretation is not available in those cases. 
540 |a Springer-Verlag Berlin Heidelberg, 2015 
690 7 |a Molecular actuators  |2 nationallicence 
690 7 |a Charge transfer  |2 nationallicence 
690 7 |a Helical structure  |2 nationallicence 
690 7 |a π-π Overlap  |2 nationallicence 
690 7 |a Density functional theory computations  |2 nationallicence 
700 1 |a Beaujean  |D Pierre  |u Laboratoire de Chimie Théorique, Unité de Chimie Physique Théorique et Structurale, Université de Namur, rue de Bruxelles 61, 5000, Namur, Belgium  |4 aut 
700 1 |a Kertesz  |D Miklos  |u Department of Chemistry and Institute of Soft Matter, Georgetown University, 37th and O Streets, NW, 20057-1227, Washington, DC, USA  |4 aut 
773 0 |t Theoretical Chemistry Accounts  |d Springer Berlin Heidelberg  |g 134/12(2015-12-01), 1-10  |x 1432-881X  |q 134:12<1  |1 2015  |2 134  |o 214 
856 4 0 |u https://doi.org/10.1007/s00214-015-1750-3  |q text/html  |z Onlinezugriff via DOI 
898 |a BK010053  |b XK010053  |c XK010000 
900 7 |a Metadata rights reserved  |b Springer special CC-BY-NC licence  |2 nationallicence 
908 |D 1  |a research-article  |2 jats 
949 |B NATIONALLICENCE  |F NATIONALLICENCE  |b NL-springer 
950 |B NATIONALLICENCE  |P 856  |E 40  |u https://doi.org/10.1007/s00214-015-1750-3  |q text/html  |z Onlinezugriff via DOI 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Beaujean  |D Pierre  |u Laboratoire de Chimie Théorique, Unité de Chimie Physique Théorique et Structurale, Université de Namur, rue de Bruxelles 61, 5000, Namur, Belgium  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Kertesz  |D Miklos  |u Department of Chemistry and Institute of Soft Matter, Georgetown University, 37th and O Streets, NW, 20057-1227, Washington, DC, USA  |4 aut 
950 |B NATIONALLICENCE  |P 773  |E 0-  |t Theoretical Chemistry Accounts  |d Springer Berlin Heidelberg  |g 134/12(2015-12-01), 1-10  |x 1432-881X  |q 134:12<1  |1 2015  |2 134  |o 214