Synthesis and solid-state fluorescence properties of pentacyclic 7-substituted-indeno[1',2':4,5] pyrido [2,1-a] isoindol-5-ones

Abstract : With the aim to design fluorescent solids, a series of indeno[10,20: 4,5] pyrido[2,1-a] isoindol-5-ones with various substituents was prepared. In these pi-extended pentacyclic derivatives, the presence of a methyl group in the 7-position was found to have a critical influence on the fluorescence properties in the solid state. Crystal packing of the non-substituted derivatives shows strong p-p interactions causing quenching of the fluorescence. In contrast, by introducing a methyl substituent in the 7-position we obtained compounds with fluorescence quantum yield up to 32% in the solid state.
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RSC Advances, Royal Society of Chemistry, 2015, 5 (4), pp.2715-2723. 〈10.1039/c4ra12155d〉
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https://hal.univ-lorraine.fr/hal-01495964
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Soumis le : lundi 27 mars 2017 - 10:23:32
Dernière modification le : mardi 9 octobre 2018 - 13:27:15

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Zein Chamas, E. Marchi, B. Presson, Emmanuel Aubert, Yves Fort, et al.. Synthesis and solid-state fluorescence properties of pentacyclic 7-substituted-indeno[1',2':4,5] pyrido [2,1-a] isoindol-5-ones. RSC Advances, Royal Society of Chemistry, 2015, 5 (4), pp.2715-2723. 〈10.1039/c4ra12155d〉. 〈hal-01495964〉

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