Organometallic emitting dyes: Palladium(II) nile red complexes |
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| Authors: | Massimo La Deda Iolinda Aiello Francesco Barigelletti |
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| Affiliation: | a Centro di Eccellenza CEMIF.CAL - LASCAMM, Unità INSTM della Calabria, Dipartimento di Chimica, Università della Calabria, I-87030 Arcavacata (CS), Italy
b Istituto di Sintesi Organica e Fotoreattività (ISOF - CNR), Via P. Gobetti, 101, I-40129 Bologna, Italy |
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| Abstract: | The Nile Red dye, H(NR), forms cyclometalated R2-disubstituted-acetylacetonato square planar Pd(II) complexes (1-3; R = CH3, CF3, C6H5 respectively) whose photophysical properties were tested in cyclohexane, dichloromethane or methanol solutions. In cyclohexane 1-3 emit in the range 580-650 nm with a quantum yield ranging from 0.12 (R = CH3) to 0.50 (R = CF3) and lifetimes between 0.88 and 4.46 ns. These complexes form a new family of notably efficient red emitting organometallic dyes which could be of interest for practical applications. |
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| Keywords: | Cyclopalladated complexes Nile red complexes Substituted acetylacetonato complexes Red emitter Luminescence |
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