2017
DOI: 10.1016/j.jphotochem.2017.01.023
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Color tuning of cationic pyrene derivatives on a clay nanosheet: Retardation of gradual redshift on clay

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Cited by 6 publications
(10 citation statements)
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“…Thus, the same quenching efficiency was shown for An-Py 2+ as was found for Py 4+ in earlier studies, but using one-fifth the amount of Ru 2+ . , Furthermore, when the loading amount of Ru 2+ reached 12.5–25.0% CEC (An-Py 2+ :Ru 2+ = 2–1:1), near-quantitative emission quenching was observed, which was also confirmed by measurements of the emission lifetime (τ), as shown in Figure . In the absence of Ru 2+ (An-Py 2+ /SSA, [An-Py 2+ ] = 25% CEC), the decay of the emission from An-Py 2+ (monitored wavelength =425 nm) was fitted well to two components (τ 1 = 0.23 ns [75%] and τ 2 = 1.1 ns [25%]) owing to the formation of an excimer . However, in the presence of Ru 2+ at 25% CEC, no decay of the emission from An-Py 2+ was observed within our apparatus response time (pulse width =0.4 ns, full width at half-maximum).…”
Section: Resultsmentioning
confidence: 54%
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“…Thus, the same quenching efficiency was shown for An-Py 2+ as was found for Py 4+ in earlier studies, but using one-fifth the amount of Ru 2+ . , Furthermore, when the loading amount of Ru 2+ reached 12.5–25.0% CEC (An-Py 2+ :Ru 2+ = 2–1:1), near-quantitative emission quenching was observed, which was also confirmed by measurements of the emission lifetime (τ), as shown in Figure . In the absence of Ru 2+ (An-Py 2+ /SSA, [An-Py 2+ ] = 25% CEC), the decay of the emission from An-Py 2+ (monitored wavelength =425 nm) was fitted well to two components (τ 1 = 0.23 ns [75%] and τ 2 = 1.1 ns [25%]) owing to the formation of an excimer . However, in the presence of Ru 2+ at 25% CEC, no decay of the emission from An-Py 2+ was observed within our apparatus response time (pulse width =0.4 ns, full width at half-maximum).…”
Section: Resultsmentioning
confidence: 54%
“…In the absence of Ru 2+ (An-Py 2+ /SSA), a strong emission band was observed from An-Py 2+ on SSA. Fluorescence quantum yields (Φ f ) were measured by absolute emission quantum yield measurement systems equipped with a calibrated integrating sphere, ,,,, and Φ f of An-Py 2+ /SSA was estimated to be 27.0 ± 1.0% . In contrast, the emission intensities of An-Py 2+ drastically decreased with a very small amount of Ru 2+ , and a new broad emission band from Ru 2+ appeared in the region of 550–750 nm (Figure , inset).…”
Section: Resultsmentioning
confidence: 99%
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