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Electron-Transfer Dynamics for a Donor–Bridge–AcceptorComplex in Ionic Liquids.

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Title: Electron-Transfer Dynamics for a Donor–Bridge–AcceptorComplex in Ionic Liquids.
Authors: DeVine, Jessalyn A.1, Labib, Marena2, Harries, Megan E.2, Rached, Rouba Abdel Malak2, Issa, Joseph1, Wishart, James F.3 wishart@bnl.gov, Castner, Edward W.1 ed.castner@rutgers.edu
Source: Journal of Physical Chemistry B. Aug2015, Vol. 119 Issue 34, p11336-11345. 10p.
Subjects: Charge exchange, Ionic liquids, Photoinduced electron transfer, Phenylenediamines, Proline
Abstract: Intramolecular photoinduced electrontransfer from an N,N-dimethyl-p-phenylenediaminedonor bridged by a diproline spacer to a coumarin 343 acceptor wasstudied using time-resolved fluorescence measurements in three ionicliquids and in acetonitrile. The three ionic liquids have the bis[(trifluoromethyl)sulfonyl]amideanion paired with the tributylmethylammonium, 1-butyl-1-methylpyrrolidinium,and 1-decyl-1-methylpyrrolidinium cations. The dynamics in the two-prolinedonor–bridge–acceptor complex are compared to thoseobserved for the same donor and acceptor connected by a single prolinebridge, studied previously by Lee et al. (J. Phys. Chem. C2012, 116, 5197). The increasedconformational freedom afforded by the second bridging proline resultedin multiple energetically accessible conformations. The multiple conformationshave significant variations in donor–acceptor electronic coupling,leading to dynamics that include both adiabatic and nonadiabatic contributions.In common with the single-proline bridged complex, the intramolecularelectron transfer in the two-proline system was found to be in theMarcus inverted regime. [ABSTRACT FROM AUTHOR]
Copyright of Journal of Physical Chemistry B is the property of American Chemical Society and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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DbLabel: Engineering Source
An: 109187680
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  Data: Electron-Transfer Dynamics for a Donor–Bridge–AcceptorComplex in Ionic Liquids.
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  Data: <searchLink fieldCode="AR" term="%22DeVine%2C+Jessalyn+A%2E%22">DeVine, Jessalyn A.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Labib%2C+Marena%22">Labib, Marena</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Harries%2C+Megan+E%2E%22">Harries, Megan E.</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Rached%2C+Rouba+Abdel+Malak%22">Rached, Rouba Abdel Malak</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Issa%2C+Joseph%22">Issa, Joseph</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Wishart%2C+James+F%2E%22">Wishart, James F.</searchLink><relatesTo>3</relatesTo><i> wishart@bnl.gov</i><br /><searchLink fieldCode="AR" term="%22Castner%2C+Edward+W%2E%22">Castner, Edward W.</searchLink><relatesTo>1</relatesTo><i> ed.castner@rutgers.edu</i>
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+Physical+Chemistry+B%22">Journal of Physical Chemistry B</searchLink>. Aug2015, Vol. 119 Issue 34, p11336-11345. 10p.
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  Data: <searchLink fieldCode="DE" term="%22Charge+exchange%22">Charge exchange</searchLink><br /><searchLink fieldCode="DE" term="%22Ionic+liquids%22">Ionic liquids</searchLink><br /><searchLink fieldCode="DE" term="%22Photoinduced+electron+transfer%22">Photoinduced electron transfer</searchLink><br /><searchLink fieldCode="DE" term="%22Phenylenediamines%22">Phenylenediamines</searchLink><br /><searchLink fieldCode="DE" term="%22Proline%22">Proline</searchLink>
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  Data: Intramolecular photoinduced electrontransfer from an N,N-dimethyl-p-phenylenediaminedonor bridged by a diproline spacer to a coumarin 343 acceptor wasstudied using time-resolved fluorescence measurements in three ionicliquids and in acetonitrile. The three ionic liquids have the bis[(trifluoromethyl)sulfonyl]amideanion paired with the tributylmethylammonium, 1-butyl-1-methylpyrrolidinium,and 1-decyl-1-methylpyrrolidinium cations. The dynamics in the two-prolinedonor–bridge–acceptor complex are compared to thoseobserved for the same donor and acceptor connected by a single prolinebridge, studied previously by Lee et al. (J. Phys. Chem. C2012, 116, 5197). The increasedconformational freedom afforded by the second bridging proline resultedin multiple energetically accessible conformations. The multiple conformationshave significant variations in donor–acceptor electronic coupling,leading to dynamics that include both adiabatic and nonadiabatic contributions.In common with the single-proline bridged complex, the intramolecularelectron transfer in the two-proline system was found to be in theMarcus inverted regime. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of Journal of Physical Chemistry B is the property of American Chemical Society and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1021/acs.jpcb.5b03320
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      – Code: eng
        Text: English
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        PageCount: 10
        StartPage: 11336
    Subjects:
      – SubjectFull: Charge exchange
        Type: general
      – SubjectFull: Ionic liquids
        Type: general
      – SubjectFull: Photoinduced electron transfer
        Type: general
      – SubjectFull: Phenylenediamines
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      – SubjectFull: Proline
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      – TitleFull: Electron-Transfer Dynamics for a Donor–Bridge–AcceptorComplex in Ionic Liquids.
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            NameFull: Issa, Joseph
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              Text: Aug2015
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