Journal article
Computational Investigation of the Role of Counterions and Reorganization Energy in a Switchable Bistable [2]Rotaxane
The journal of physical chemistry. A, Molecules, spectroscopy, kinetics, environment, & general theory, v 115(26), pp 7773-7777
07 Jul 2011
PMID: 21595443
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Switchable bistable [2]rotaxanes, such as those of the Stoddart-Heath-type, show promise for the development of molecular electronic devices and functional prototypes have been demonstrated. Herein, one such switchable rotaxane system is studied computationally at the AM1-FS1 and DFT levels of theory. The results show that the computationally efficient AM1-FS1 method, (efficient relative to DFT) is capable of reliably predicting properties such as binding site preference and coconformational relative stabilities as well as the barrier to isomerization between the different coconformational states. These properties play important roles in the functionality of rotaxane-based molecular electronic devices. In addition, the role of the counterions is assessed from a computational standpoint. The results reveal that inclusion of counterions is not as significant as has been previously suggested. Finally, the reorganization energy associated with oxidation/reduction of the complex is studied. This provides a possible link to the origin of the observed conductivity difference between the two coconformational states, the property upon which device functionality is based.
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Details
- Title
- Computational Investigation of the Role of Counterions and Reorganization Energy in a Switchable Bistable [2]Rotaxane
- Creators
- Michael E. Foster - Drexel UniversityKarl Sohlberg - Drexel University
- Publication Details
- The journal of physical chemistry. A, Molecules, spectroscopy, kinetics, environment, & general theory, v 115(26), pp 7773-7777
- Publisher
- American Chemical Society; Washington, DC
- Number of pages
- 5
- Grant note
- CHE0449595 / National Science Foundation; National Science Foundation (NSF)
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Chemistry
- Web of Science ID
- WOS:000292281300041
- Scopus ID
- 2-s2.0-79959799334
- Other Identifier
- 991019169647504721
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InCites Highlights
Data related to this publication, from InCites Benchmarking & Analytics tool:
- Web of Science research areas
- Chemistry, Physical
- Physics, Atomic, Molecular & Chemical