A new fluorescent H+ sensor based on core-substituted naphthalene diimide
RP Cox, HF Higginbotham, BA Graystone… - Chemical Physics …, 2012 - Elsevier
The synthesis and spectroscopic characterisation of a new amino core-substituted
naphthalene diimide is reported. The compound exhibits H+ sensing properties leading to a
change in optical output through both absorption and emission. On addition of trifluoroacetic
acid, an increase in the fluorescence quantum yield from 0.5 to 0.67 and a∼ 500–550cm− 1
blue shift of absorption and emission maxima are observed. Addition of triethylamine fully
reverses these effects and the cycle is repeatable many times. The increase in fluorescence …
naphthalene diimide is reported. The compound exhibits H+ sensing properties leading to a
change in optical output through both absorption and emission. On addition of trifluoroacetic
acid, an increase in the fluorescence quantum yield from 0.5 to 0.67 and a∼ 500–550cm− 1
blue shift of absorption and emission maxima are observed. Addition of triethylamine fully
reverses these effects and the cycle is repeatable many times. The increase in fluorescence …
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