A dual-chromophore-based cross-reactive fluorescent sensor for efficient discrimination of multiple anionic surfactants

Synthesis and Characterization of a Mg2+-Selective Probe Based on Benzoyl Hydrazine Derivative and Its Application in Cell Imaging

“…Thus, the IR data also supported that –C=O, −OH, and −C=N groups participated in the formation of P -Mg 2+ complex. Thus, based on the obtained results and the reported works [ 7 , 18 , 19 ], the proposed probe P was most likely to coordinate with Mg 2+ in the mode as shown in Figure 5 . The binding with Mg 2+ blocked the photo-induced electron transfer (PET) mechanism and caused the fluorescence enhancement of P .…”

“…Many biologically important targets, including metal ions, anions, and amino acids have been successfully detected by fluorescence techniques in vitro and in vivo because of the significant advantages such as the non-destructive characteristic, fast response, and good sensitivity compared with other common detection methods [ 1 , 2 , 3 , 4 , 5 , 6 , 7 ]. Among the bioavailable species, Mg 2+ is the most abundant divalent cation in living cells and plays important roles in many cellular processes, such as DNA synthesis and protein phosphorylation.…”

“…Based on these outstanding properties, they have been applied widely in the fields of catalysis, medicine, and fluorescent probes [ 18 , 19 , 20 ]. Beyond this, photo-induced electron transfer (PET) as a signal mechanism in photophysical processes has been broadly used [ 7 , 21 , 22 ]. Many reported probes based on PET mechanism contain amine and amide moiety, and the key advantage is easy to prepare and construct “turn-on” type probes for the detection of various targets.…”

Tuning Rheological Behaviors of Supramolecular Aqueous Gels via Charge Transfer Interactions

“…To further confirm the CT interactions between PyFF and A1 , A2 , or A3 , the emission spectra of a dilute PyFF solution were recorded with the gradual addition of acceptor molecules ( A1 , A2 , or A3 ) from 0 to 200 equiv ( A3 was from 0 to 500 equiv). Figure S1 shows a typical emission spectrum of pyrene with three characteristic peaks at 377, 398, and 420 nm, ascribing to the typical monomer emission of a pyrene chromophore. , Meanwhile, the selected acceptor molecules did not exhibit fluorescence emission at this excitation wavelength, in favor of monitoring the CT interactions between PyFF and these acceptors. Figure S1a demonstrated that the emission of PyFF was quenched obviously with the addition of A1 .…”

Pyrene-based monomer-excimer dual response organosilicon polymer for the selective detection of 2,4,6-trinitrotoluene (TNT) and 2,4,6-trinitrophenol (TNP)

“…Since intermolecular excimers of pyrene were observed in solution, 1 numerous pyrene-based fluorescence probes via the formation or destruction of the excimer have been designed and applied in biology (e.g., nucleic acids, 2 proteins, [3][4][5] bacteria, 6 etc. ), chemistry (e.g., detection of cations, 7,8 anions, 9,10 pH, 11,12 nitro compounds, 13,14 etc. ), and materials (e.g., responsive materials, [15][16][17] optical materials, 18-20 etc.).…”