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dc.contributor.authorAlsam, Amani Abdu
dc.contributor.authorAly, Shawkat Mohammede
dc.contributor.authorParida, Manas R.
dc.contributor.authorAlarousu, Erkki
dc.contributor.authorCao, Zhen
dc.contributor.authorCavallo, Luigi
dc.contributor.authorMohammed, Omar F.
dc.date.accessioned2017-01-02T08:42:39Z
dc.date.available2017-01-02T08:42:39Z
dc.date.issued2016-09-21
dc.identifier.citationAlsam AA, Aly SM, Parida MR, Alarousu E, Cao Z, et al. (2017) Real-time observation of intersystem crossing induced by charge recombination during bimolecular electron transfer reactions. Dyes and Pigments 136: 881–886. Available: http://dx.doi.org/10.1016/j.dyepig.2016.09.049.
dc.identifier.issn0143-7208
dc.identifier.doi10.1016/j.dyepig.2016.09.049
dc.identifier.urihttp://hdl.handle.net/10754/622240
dc.description.abstractReal-time probing of intersystem crossing (ISC) and triplet-state formation after photoinduced electron transfer (ET) is a particularly challenging task that can be achieved by time-resolved spectroscopy with broadband capability. Here, we examine the mechanism of charge separation (CS), charge recombination (CR) and ISC of bimolecular photoinduced electron transfer (PET) between poly[(9,9-di(3,3′-N,N’-trimethyl-ammonium) propyl fluorenyl-2,7-diyl)-alt-co-(9,9-dioctyl-fluorenyl-2,7-diyl)] diiodide salt (PFN) and dicyanobenzene (DCB) using time-resolved spectroscopy. PET from PFN to DCB is confirmed by monitoring the transient absorption (TA) and infrared spectroscopic signatures for the radical ion pair (DCB─•-PFN+•). In addition, our time-resolved results clearly demonstrate that CS takes place within picoseconds followed by CR within nanoseconds. The ns-TA data exhibit the clear spectroscopic signature of PFN triplet-triplet absorption, induced by the CR of the radical ion pairs (DCB─•-PFN+•). As a result, the triplet state of PFN (3PFN*) forms and subsequently, the ground singlet state is replenished within microseconds. © 2016
dc.description.sponsorshipThis work was supported by King Abdullah University of Science and Technology (KAUST). This work is also supported by Saudi Arabia Basic Industries Corporation (SABIC) grant RGC/3/2470-01.
dc.publisherElsevier BV
dc.relation.urlhttp://www.sciencedirect.com/science/article/pii/S0143720816307768
dc.subjectBimolecular electron transfer
dc.subjectCharge recombination
dc.subjectIntersystem crossing
dc.subjectPump-probe experiments
dc.subjectTriplet state
dc.titleReal-time observation of intersystem crossing induced by charge recombination during bimolecular electron transfer reactions
dc.typeArticle
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Division
dc.contributor.departmentChemical Science Program
dc.contributor.departmentKAUST Solar Center (KSC)
dc.contributor.departmentKAUST Catalysis Center (KCC)
dc.identifier.journalDyes and Pigments
kaust.personAlsam, Amani Abdu
kaust.personAly, Shawkat Mohammede
kaust.personParida, Manas R.
kaust.personAlarousu, Erkki
kaust.personCao, Zhen
kaust.personCavallo, Luigi
kaust.personMohammed, Omar F.


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