Insights into the aggregation-induced emission of 1,8-naphthalimide-based supramolecular hydrogels
Scholar | Other documents of the author: Felip-León, Carles; Galindo Honrubia, Francisco; Miravet, Juan F.
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TitleInsights into the aggregation-induced emission of 1,8-naphthalimide-based supramolecular hydrogels
PublisherRoyal Society of Chemistry
The study of aggregation-induced emission (AIE) of a series of 1,8-naphthalimide derivatives in aqueous media is reported herein. Some of these molecules constitute the first examples of 1,8-naphthalimidecontaining ... [+]
The study of aggregation-induced emission (AIE) of a series of 1,8-naphthalimide derivatives in aqueous media is reported herein. Some of these molecules constitute the first examples of 1,8-naphthalimidecontaining amino acid derivatives that form hydrogels with excellent photophysical and mechanical properties. The present study provides further insights for the rational design of water-compatible stimuliresponsive photonic materials presenting AIE. AIE was quantitatively evaluated by measuring the fluorescence quantum yields of the molecules. Gelators 1 and 2 exhibit self-assembled fibrillar morphologies and present the best performance regarding the AIE effect, showing a remarkable enhancement in fluorescence intensity of 4700% and reaching a notable fluorescence quantum yield (Φf) of 30%. Non-gelator molecules 6 and 7 form nanoparticles, which also present AIE, but with emissions corresponding to their excimers. Therefore, the AIE intensity and wavelength are regulated by the type of aggregate morphology: fibers, nanoparticles or soluble species. [-]
Investigation projectCTQ2012-37735 ; CTQ2015-71004-R ; BES-2013-063296 ; P1.1B2015-76
Bibliographic citationFELIP-LEÓN, Carles; GALINDO, Francisco; MIRAVET, Juan F. Insights into the aggregation-induced emission of 1, 8-naphthalimide-based supramolecular hydrogels. Nanoscale, 2018, vol. 10, no 36, p. 17060-17069.
This journal is © The Royal Society of Chemistry 2018
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