Fig. 4
From: Ultrathin two-dimensional porous organic nanosheets with molecular rotors for chemical sensing
The dynamic behavior study of TPE rotors in NUS-24 nanosheets. a Fluorescent spectra of NUS-24 nanosheets (c = 20 µg mL−1, λ ex = 365 nm) in acetone and acetone/water mixtures. b Plot of relative emission intensity versus water fraction in acetone/water mixtures of NUS-24 nanosheets and bulk powder. c Fluorescence emission spectra of NUS-24 nanosheets in various VOC solutions at room temperature (c = 20 µg mL−1, λ ex = 365 nm). d Time-dependent fluorescence enhancement of NUS-24 nanosheets by adding 1,4-diisopropylbenzene (20% v/v in acetone). e Relative fluorescence intensity of bulk powder and nanosheets of NUS-24 in various VOC solutions (I R = I/I acetone). The error bars show average and range of measured values based on at least five repeats in every single measurement
