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White Light Emission by Simultaneous One Pot Encapsulation of Dyes into One-Dimensional Channelled Aluminophosphate

2020; Multidisciplinary Digital Publishing Institute; Volume: 10; Issue: 6 Linguagem: Inglês

10.3390/nano10061173

2079-4991

Rebeca Sola‐Llano, Ainhoa Oliden‐Sánchez, Almudena Alfayate, Luis Gómez‐Hortigüela, Joaquı́n Pérez-Pariente, Teresa Arbeloa, Johan Hofkens, Eduard Fron, Virginia Martínez‐Martínez,

Carbon and Quantum Dots Applications

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.