Spectral narrowing of the emission from rhodamine 6G infiltrated in synthetic opals enhanced by the surface plasmon resonance

Abstract

We report on the observation of spectrally narrowed emission (SNE) from rhodamine 6G infiltrated in synthetic opals, and the enhancement of the spectral narrowing by the surface plasmon resonance effect of Ag particles anchored on the internal surface of the opals. With Ag particles, SNE is observed at a lower pump intensity, and the threshold of the spectral narrowing is one-tenth lower than that without Ag. It was clarified that enhancement is not caused by the light scattering of the Ag particles, but by the surface plasmon resonance.

Effect of the surface-plasmon resonance on the emission properties of rhodamine 6G infiltrated in synthetic opals

“…10 In brief, synthetic opals were fabricated by sedimentation of the suspensions of silica particles ͑300 nm in diameter͒ with horizontal shaking. 10 In brief, synthetic opals were fabricated by sedimentation of the suspensions of silica particles ͑300 nm in diameter͒ with horizontal shaking.…”

“…As a trial for the actual usage of synthetic opals, the spectral narrowing of PL in dyes and conducting polymers infiltrated in synthetic opals have been reported. 10 In this paper, we investigate the magnitude of the enhancement of the SNE from rhodamine 6G infiltrated in syn-thetic opals by the surface-plasmon resonance, and the validity of the enhancement is examined by theoretical consideration. We have reported the observation of a spectrally narrowed emission ͑SNE͒ from rhodamine 6G infiltrated in synthetic opals and the enhancement of this SNE by the surfaceplasmon resonance effect of Ag particles anchored on the internal surface of the opals.…”

Applications of Single-site Photocatalysts to the Design of Unique Surface Functional Materials

“…Recently the application of nano-sized metals for the optical material has attracted the interest of many researchers. Such nano-sized metal can demonstrate the plasmon phenomena and the enhancement of photoluminescence of dye molecules induced by the plasmon phenomena of nano-sized metal have been observed [63,64]. Figure 23 shows the photoluminescence spectra of Rhodamin 6G dye molecules adsorbed on the Ti-containing mesoporous silica (Ti-MS) thin film and the Ti-MS thin film having the nano-sized Ag metal loaded by the photo-assisted deposition.…”

Size-controlled synthesis of silver nanoparticles on Ti-containing mesoporous silica thin film and photoluminescence enhancement of rhodamine 6G dyes by surface plasmon resonance

“…Enhancements of photoluminescence (PL) properties of dye and complex molecules under surface plasmon excitation from metal nanoparticles have been reported in the past. [7][8][9][10] For practical application of these fascinating effects, it is important to control the size of the metal particles and the distance between the metal particulate and dye because these factors significantly influence the surface plasmon resonance sensitively. [11][12][13] In the present work, PL properties of rhodamine 6G (R6G) dye molecules immobilized on Ti-containing mesoporous silica thin films (Ti-MSTF) with silver nanoparticles, which were prepared by a photo-assisted deposition method, were investigated.…”