Tuning the energy transfer process for the ensemble of fluorescein with β-cyclodextrin (β-CD) unit and spiropyran with adamantyl (AD) unit: A temperature-gated molecular fluorescence switch

By combining the features of photochromic spiropyran and the host–guest inclusion complex between the adamantyl (AD) and β-cyclodextrin (β-CD) derivatives, we report a temperature-gated molecular fluorescence switch.