1984
DOI: 10.1021/j150668a042
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The nature of the silica cage as reflected by spectral changes and enhanced photostability of trapped Rhodamine 6G

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Cited by 936 publications
(523 citation statements)
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“…All the emission measurements were carried out in the ''front face mode'' by collecting the PL signal in the backward direction in order to minimize the re-absorption effects, [47] as reported for comparable systems. [8][9][10][11][12][13][14] The spectra were corrected for the optical transfer function of the adopted measurement system. Absorbance measurements were carried out by exciting the samples with a 100 W tungsten lamp and recording the transmitted signal with the photonic multichannel analyzer (Hamamatsu PMA-11, spectral resolution 1 nm).…”
Section: Methodsmentioning
confidence: 99%
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“…All the emission measurements were carried out in the ''front face mode'' by collecting the PL signal in the backward direction in order to minimize the re-absorption effects, [47] as reported for comparable systems. [8][9][10][11][12][13][14] The spectra were corrected for the optical transfer function of the adopted measurement system. Absorbance measurements were carried out by exciting the samples with a 100 W tungsten lamp and recording the transmitted signal with the photonic multichannel analyzer (Hamamatsu PMA-11, spectral resolution 1 nm).…”
Section: Methodsmentioning
confidence: 99%
“…[28] These effects have been already reported for dye molecules hosted in porous glass materials and are related to surface polarity effect and restriction on the mobility of the molecules. [8,48] It is interesting to note that class II samples present a PL band larger at larger wavelength with respect to class I samples, an indication of a larger distribution of emitting centers. On the other hand, the close similarity of the reported spectra indicates that the grafting procedure does not change the optical properties of the dye, both in samples prepared from the perchlorate or chloride precursors (similar results also hold for samples with different concentrations, not reported here for the sake of brevity).…”
Section: Intensity (Arb Units)mentioning
confidence: 99%
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“…Os reagentes podem ser incorporados nos poros da matriz, por dopagem física, durante a gelificação 59 . Embora esse método seja bastante simples, pode ocorrer a lixiviação do dopante 60 .…”
Section: Sensores Químicosunclassified
“…oxygen or other dye molecules, etc) [5][6][7][8]. Caging a laser dye within a silica matrix has shown improved photostability with respect to solvent hosts [5,9,10].…”
Section: Introductionmentioning
confidence: 99%