A synergetic FRET/ICT platform-based fluorescence probe for ratiometric imaging of bisulfite in lipid droplets

Tuning non-radiative decay channelsviasymmetric/asymmetric substituent effects on phenazine derivatives and their phototherapy switch between dynamic and thermal processes

“…With the enhancement of solvent polarity, the maximal emission peaks red shifted from the deep red to near-infrared red (NIR) region, suggesting the emergence of their CT-dominated fluorescence. 34 However, the maximal emission peak of DEPZ was insensitive to polarity, which was well in accordance with the theoretical simulation, implying the presence of the LE-dominated fluorescence. The calculated transition dipoles of three emitters directly reflected the electron transition form (Fig.…”

Fluorescent probes based on an oxonium-coumarin scaffold for the detection of SO2 derivatives

“…The reference indicates that TNBS (2,4,6-trinitrobenzenesulphonate) is a TST enzyme inhibitor, which can effectively inhibit the production of SO 2 in HepG-2 cells. 31 Therefore, in the fourth column, HepG-2 cells were incubated in TNBS for 1 h, then transferred to CPO1 for 1 h, and finally incubated in a mixture of GSH and Na 2 S 2 O 3 for 1 h. After this, the fluorescence intensity was almost the same as that of the control group. In conclusion, probe CPO1 can be used for the detection of endogenous and exogenous SO 2 .…”

“…Oxonium can not only greatly improve the hydrophilicity of compounds, but also has an excellent mitochondrial targeting group, giving it the mitochondrial targeting ability. 31 In addition, the oxonium structure also has near-infrared fluorescence, which is an excellent energy acceptor group. As expected, probe CPO1 was synthesized with a melting point of 591.98 K. CPO1 has an extremely short response time; it can specifically recognize SO 2 derivatives and exhibit a transition from red to green fluorescence.…”

Synthesis of carbon dots for Al3+ sensing in water by fluorescence assay

“…Common mechanisms of fluorescence enhancement are intramolecular charge transfer (ICT), Förster resonance energy transfer (FRET) and chelate fluorescence enhancement (CHEP). [ 29 ] To understand which mechanism was the main reason for fluorescence enhancement, some experiments were performed. Figure 6a shows that the UV absorption spectra of the CDs that changed upon addition of Al 3+ , but no new peak appeared, just a simple superposition of their spectra.…”