Journal
NANOMATERIALS
Volume 10, Issue 6, Pages -Publisher
MDPI
DOI: 10.3390/nano10061173
Keywords
dye-guest encapsulation; zeolite; microporous aluminophosphates; one-pot synthesis; hybrid fluorescent system; white light emitter; FRET
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Funding
- Gobierno Vasco [IT912-16]
- Ministerio de Economia y Competitividad (MINECO)
- Spanish Agencia Estatal de Investigacion
- EU's Fondo Europeo de Desarrollo Regional [MAT2017-83856-C3-3-P, MAT2016-77496-R, 3E190382]
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By simultaneous occlusion of rationally chosen dyes, emitting in the blue, green and red region of the electromagnetic spectrum, into the one-dimensional channels of a magnesium-aluminophosphate with AEL-zeolitic type structure, MgAPO-11, a solid-state system with efficient white light emission under UV excitation, was achieved. The dyes herein selected-acridine (AC), pyronin Y (PY), and hemicyanine LDS722-ensure overall a good match between their molecular sizes and the MgAPO-11 channel dimensions. The occlusion was carried out via the crystallization inclusion method, in a suitable proportion of the three dyes to render efficient white fluorescence systems by means of fine-tuned FRET (fluorescence resonance energy transfer) energy transfer processes. The FRET processes are thoroughly examined by the analysis of fluorescence decay traces using the femtosecond fluorescence up-conversion technique.
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