A novel near-infrared fluorescent probe based on triphenylamine derivatives for the rapid and sensitive detection of heparin

Abstract

In this study, a positive charged near-infrared fluorescent probe (TPA-P+) was constructed by connecting pyridine cation with triphenylamine and successfully used for the detection of heparin. The probe has the...

An “AIE + ESIPT” mechanism-based benzothiazole-derived fluorescent probe for the detection of Hg2+and its applications

“…The concept of aggregation-induced emission (AIE), as proposed by Tang's group, 20 refers to some luminescent molecules such as benzothiazole, 21,22 tetraphenylethene, [23][24][25][26] and triphenylamine [27][28][29] that could display intense fluorescent emission behavior in the aggregated state due to the restriction of intramolecular motions (RIM). On the other hand, excitedstate intramolecular proton transfer (ESIPT), first reported by Weller in the 1995, involves emission by fast intramolecular proton transfer via the extremely fast enol-keto tautomeric transformation between the ground state and excited state upon photoexcitation with the advantages of good photostability and large Stokes shifts, thereby avoiding the adverse effect of self-absorption and inner-filter.…”

Pyrene‐Based Self‐Assembling Peptide for Ratiometric Detection of Heparin

“…[25] Enhancing the binding strength of fluorescent probes to heparin can greatly shorten the incubation time and improve sensitivity. [26] Supramolecular assembly combining fluorescent detection techniques has attracted increasing attention in designing fluorescent probes due to its simplicity, convenience, and good efficiency. Here, we reported the detection of heparin using a pyrene-based self-assembling fluorescent peptide.…”

“…Meanwhile, some of the developed fluorescent sensors have long incubation times and relatively low sensitivity [25] . Enhancing the binding strength of fluorescent probes to heparin can greatly shorten the incubation time and improve sensitivity [26] …”