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• W2000829108 abstract "Single-molecule dark states are often attributed to photoexcited triplets with scant evidence of the participation of paramagnetic molecules. The photodynamics of blinking single molecules of 4-dicyanomethylene-2-methyl-6-p-dimethylaminostyryl-4H-pyran (DCM) in crystals of potassium hydrogen phthalate (KAP) were compared with the lifetimes of DCM triplet states, likewise in KAP, whose zero-field splitting (ZFS) tensors were fully characterized by time-resolved electron paramagnetic resonance (TR-EPR) spectroscopy. Luminescent mixed crystals of KAP were grown from solutions containing 10−4 −10−9 M DCM, a model optically nonlinear chromophore. The luminescent dye was localized in the {111̅} crystalline growth sectors. The photoexcited triplets states of DCM in the heavily dyed (10−4 M) crystals were analyzed by TR-EPR spectroscopy. The photoexcited singlet states of DCM in lightly dyed crystals (10−9 M) were analyzed by single-molecule microscopy. Large blue shifts in the absorption and emission spectra of DCM in KAP were interpreted as a consequence of protonation at the dimethylamino nitrogen atom, an assignment supported by calculations of the zero-field splitting (ZFS) tensors of molecules in their triplet states. Experimental ZFS tensors with eigenvalues comparable to those of the computed tensors were determined from the angular dependence of the EPR spectra of DCMH+ triplets within KAP single crystals with respect to the applied magnetic field. Data from individual growth sectors failed to show magnetically equivalent site occupancies, evidence of the kinetic ordering during growth. The intermittent fluorescence of individual chromophores was analyzed. The distributions of on(off) times were characterized by distributed rates fit to power laws. The lifetime of the triplet states was analyzed from the time decay of the EPR signals between 100 and 165 K. The data were well fit with a single time constant for the signal decay, a result wholly inconsistent with the blinking of single molecules with off times commonly of tens of seconds. Triplet decay was extrapolated to ∼25 μs at room temperature. Therefore, the assumption that single-molecule dark states originate with triplet excited states is not sustainable for single DCM molecules in KAP." @default.
• W2000829108 created "2016-06-24" @default.
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• W2000829108 date "2009-07-22" @default.
• W2000829108 modified "2023-10-17" @default.
• W2000829108 title "Triplet States of the Nonlinear Optical Chromophore DCM in Single Crystals of Potassium Hydrogen Phthalate and Their Relationship to Single-Molecule Dark States" @default.
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• W2000829108 cites W1593010471 @default.
• W2000829108 cites W1613911311 @default.
• W2000829108 cites W1626513324 @default.
• W2000829108 cites W1640850922 @default.
• W2000829108 cites W1971217997 @default.
• W2000829108 cites W1975127016 @default.
• W2000829108 cites W1975882734 @default.
• W2000829108 cites W1977683464 @default.
• W2000829108 cites W1978077609 @default.
• W2000829108 cites W1982831486 @default.
• W2000829108 cites W1983699273 @default.
• W2000829108 cites W1985848202 @default.
• W2000829108 cites W1987341162 @default.
• W2000829108 cites W1990531549 @default.
• W2000829108 cites W1994429250 @default.
• W2000829108 cites W1998001177 @default.
• W2000829108 cites W2005295163 @default.
• W2000829108 cites W2005764905 @default.
• W2000829108 cites W2007892750 @default.
• W2000829108 cites W2008465413 @default.
• W2000829108 cites W2014006412 @default.
• W2000829108 cites W2014892388 @default.
• W2000829108 cites W2015329858 @default.
• W2000829108 cites W2017023264 @default.
• W2000829108 cites W2017951428 @default.
• W2000829108 cites W2019530509 @default.
• W2000829108 cites W2020421502 @default.
• W2000829108 cites W2023297102 @default.
• W2000829108 cites W2027505025 @default.
• W2000829108 cites W2028724748 @default.
• W2000829108 cites W2029370337 @default.
• W2000829108 cites W2035611959 @default.
• W2000829108 cites W2037782938 @default.
• W2000829108 cites W2043483302 @default.
• W2000829108 cites W2043736118 @default.
• W2000829108 cites W2045773962 @default.
• W2000829108 cites W2046302946 @default.
• W2000829108 cites W2046932416 @default.
• W2000829108 cites W2048715096 @default.
• W2000829108 cites W2048817075 @default.
• W2000829108 cites W2049760573 @default.
• W2000829108 cites W2049919990 @default.
• W2000829108 cites W2050195191 @default.
• W2000829108 cites W2052809729 @default.
• W2000829108 cites W2053193582 @default.
• W2000829108 cites W2053813291 @default.
• W2000829108 cites W2054327619 @default.
• W2000829108 cites W2059397455 @default.
• W2000829108 cites W2063012508 @default.
• W2000829108 cites W2063720557 @default.
• W2000829108 cites W2064890062 @default.
• W2000829108 cites W2065687870 @default.
• W2000829108 cites W2067733907 @default.
• W2000829108 cites W2068385052 @default.
• W2000829108 cites W2069911181 @default.
• W2000829108 cites W2079390861 @default.
• W2000829108 cites W2080150773 @default.
• W2000829108 cites W2082917610 @default.
• W2000829108 cites W2088434642 @default.
• W2000829108 cites W2088768018 @default.
• W2000829108 cites W2094821182 @default.
• W2000829108 cites W2112474969 @default.
• W2000829108 cites W2113067032 @default.
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• W2000829108 cites W2128242068 @default.
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• W2000829108 cites W2165241699 @default.
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• W2000829108 doi "https://doi.org/10.1021/ja903284y" @default.
• W2000829108 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/19639938" @default.
• W2000829108 hasPublicationYear "2009" @default.
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