Impulsfluorimetrische Bestimmung der Fluoreszenzlebensdauer von Acridinorange und seinen Aggregaten

Unerwartetes Aufleuchten: Eine leichte Rotationsverdrillung und Versteifung von Merocyanin‐Farbstoffen in einem π‐π‐gestapelten Dimer‐Aggregat resultierte in einer unerwarteten Steigerung von Fluoreszenzintensität und ‐lebensdauer (siehe Diagramm). Diese Beobachtung widerspricht der allgemeinen Annahme, dass die Fluoreszenz von H‐Aggregaten stark gelöscht wird, kann aber durch die Exzitonentheorie erklärt werden.

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Fluorescent H‐Aggregates of Merocyanine Dyes

Rösch

et al. 2006

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Fluorescent H‐Aggregates of Merocyanine Dyes

et al. 2006

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Unexpected lighting up: A slight rotational twist and rigidification of merocyanine dyes in a face‐to‐face π‐π‐stacked dimer aggregate resulted in an unexpected increase in the fluorescence intensity and lifetime (see graph). This result contrasts the common perception that the fluorescence of H‐aggregates is strongly quenched, but can be rationalized within the concept of exciton theory.

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On the photophysical properties of aggregates of 3-(2-phenyl)-indolocarbocyanines

1988

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Impulsfluorimetrische Bestimmung der Fluoreszenzlebensdauer von Acridinorange und seinen Aggregaten

Cited by 4 publications

References 4 publications

Fluorescent H‐Aggregates of Merocyanine Dyes

Fluorescent H‐Aggregates of Merocyanine Dyes

Fluorescent H‐Aggregates of Merocyanine Dyes

On the photophysical properties of aggregates of 3-(2-phenyl)-indolocarbocyanines

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