Ratiometric detection of p-nitrophenol and its derivatives using a dual-emissive neuron cell-like carbonized probe based on a π⋯π stacking quenching mechanism

Abstract

p-Nitrophenol and its’ derivative can produce serious harm to mankind’s health and earth ecosystem. Therefore, it is necessary to develop a novel and rapid detection technology of p-nitrophenol and its’...

A dually emissive MPA-CdTe QDs@N, S-GQD nanosensor for sensitive and selective detection of 4-nitrophenol using two turn-off signals

“…This pH-dependent behavior can be assigned to the surface charge of the QDs, which can be protonated or deprotonated at different pH values. 35–37…”

“…Several studies have reported the occurrence of double-response behavior when employing two fluorescent units or dual-emissive CQDs as detection sensors. 31,37–40 Dong et al 38 reported a two-turn-on fluorescence-based sensor for H 2 O in D 2 O and noted that the slope of the signal ratio lacked significance, indicating no concentration-dependent relationship. Our results reveal that this low slope is attributed to nearly equal changes in the fluorescence peaks.…”

Aggregation-induced emission monomer-based fluorescent molecularly imprinted poly(ionic liquid) synthesized by a one-pot method for sensitively detecting 4-nitrophenol

“…The performance of AIE-FMIPIL was compared with that of the previously reported fluorescence approaches in 4-NP detection (Table 1). Relative to 4-NP detection using fluorescence probes composed of carbon dot materials, quantum dot-based MIPs, and so on, 8,36–47 it was observed that AIE-FMIPIL exhibited greatest sensitivity.…”