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3D photonic crystals from highly monodisperse FRET-based red luminescent PMMA spheres

AutorGalisteo-López, J. F.; Ibisate, M. ; Muñoz, A. ; López, Cefe
Fecha de publicación2015
EditorRoyal Society of Chemistry (Great Britain)
CitaciónJournal of Materials Chemistry C 3: 3999- 4006 (2015)
Resumen© The Royal Society of Chemistry 2015. Red-luminescent PMMA spheres containing a Förster resonance energy transfer (FRET) pair were synthesized via a two-step polymerization method. Two reaction parameters, time and monomer volume, are scanned in order to tune the sphere diameter in the 250-500 nm range. Further the polydispersity of the spheres is kept low, at ca. 3%, regardless of sphere diameter or dye concentration. A thorough optical characterization via spectroscopy and time resolved measurements shows a FRET efficiency of over 40% before concentration quenching effects take place, allowing for a precise tuning of their emission in the red region of the visible spectrum. The high quality of these spheres makes them suitable to fabricate self-assembled 3D photonic crystals which act as photonic environment to modify the spectral properties of the FRET pair via Bragg diffraction. This journal is
Identificadoresdoi: 10.1039/c5tc00528k
issn: 2050-7526
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