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• W2891893193 abstract "Abstract A polymer composed of 2,6‐diethynylanthraquinone diimine ( AQI ) and trans ‐bis(tributylphosphine)platinum(II), [Pt] , flanked by one tetraphenylpalladium(II)porphyrin (TPPPd) and one para ‐nitrobenzene (C 6 H 4 NO 2 ) is prepared ( P1 : M n = 57000, M w = 124500, Đ = 2.18, DP = 52.5) and is studied by time‐resolved emission spectroscopy and fs transient absorption spectroscopy (fs‐TAS). A model polymer ( AQI (C 6 H 4 NO 2 ) 2 ‐ [Pt] ) n is used for comparison ( P2 : M n = 88200, M w = 188700, Đ = 2.14, DP = 111). Taking advantage of the dynamics of the excited states of [Pt] and TPPPd and those obtained for P1 and P2 , it is shown that the excitation energy absorbed by the central polymer chain, ( AQI‐[Pt] ) n , channels this energy very efficiently, to the pendent TPPPd with a rate of energy transfer, k ET (S 1 ), larger than 2.3 × 10 10 s −1 for an energy transfer 1 ( AQI‐[Pt] )* → TPPPd for P1 at 298 K based on the decrease of the fluorescence lifetime of the ( AQI‐[Pt] ) n chain in P1 compared to P2 . This rate is more accurately estimated by fs‐TAS and is found to be 1.8 × 10 11 s −1 . This rate is ultrafast and is due to a large contribution of the Dexter mechanism across the imine bridge (CN)." @default.
• W2891893193 created "2018-09-27" @default.
• W2891893193 creator A5005815538 @default.
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• W2891893193 date "2018-09-13" @default.
• W2891893193 modified "2023-09-27" @default.
• W2891893193 title "Cross Conjugated Organometallic Polymers Exhibiting Ultrafast Excitation Energy Channeling: Drastic Effect of the Connectivity" @default.
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• W2891893193 doi "https://doi.org/10.1002/macp.201800354" @default.
• W2891893193 hasPublicationYear "2018" @default.
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