2014
DOI: 10.1021/jp507403m
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Triplet Exciton Diffusion in Platinum Polyyne Films

Abstract: A time-resolved photoluminescence quenching approach is developed for determining the triplet exciton diffusion coefficient and diffusion length (D and L D , respectively) of phosphorescent conjugated polymers. This method is applied to a solid-state organometallic conjugated polymer with the structure [−Pt(PBu 3 ) 2 −CC−C 6 H 4 −CC−] n (where Bu = n-butyl and −C 6 H 4 − is 1,4-phenylene). The approach relies on analysis of the lifetime quenching of the polymer's phosphorescence by a series of three different … Show more

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Cited by 28 publications
(50 citation statements)
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“…2 ). We ascribe the excited state absorption feature to two different triplet transitions, as reported in similar systems, 24 , 25 , 30 , 37 and supported by our DFT calculations. Single wavelength kinetics collected at 700 nm and 490 nm, as respectively shown in inserts I and II of Fig.…”
Section: Resultssupporting
confidence: 87%
“…2 ). We ascribe the excited state absorption feature to two different triplet transitions, as reported in similar systems, 24 , 25 , 30 , 37 and supported by our DFT calculations. Single wavelength kinetics collected at 700 nm and 490 nm, as respectively shown in inserts I and II of Fig.…”
Section: Resultssupporting
confidence: 87%
“…S5 † ). 37 Two sets of films, i.e. with and without PtOEP, were prepared to specifically address the FRET from DPA to the sensitizer.…”
Section: Resultsmentioning
confidence: 99%
“…122,123 If the material shows monoexponential PL decays, one may apply a simple Stern-Volmer analysis. 116,[195][196][197][198][199][200] These modeling approaches allow extracting the exciton diffusion coefficient typically as the only fitting parameter.…”
Section: Fluorescence Volume Quenchingmentioning
confidence: 99%