BODIPY-based fluorescent polymeric probes for selective detection of Fe3+ ions in aqueous solution

Abstract

It is of scientific and practical significance to sense and to remove heavy metal ions in the environment. In this work, four BODIPY-based fluorescent polymeric probes with the ability to sense and separate Fe3+ ions have been prepared via thiol-ene click reaction. The polymers have good thermal stability. Meanwhile, the results show that they have selective recognition capabilities only for Fe3+, which are mainly manifested as significant quenching of fluorescence and color modulation under visible light. The sensitivity is good, and the limit of detection reaches as low as 0.14 µM. They can also be used as reversible chemical probes to detect Fe3+. Therefore, the click reaction provides us with a facile method for preparing fluorescent polymer probes.

Ultrashort Peptide Grafting on Mesoporous Films and Its Impact on Ionic Mesopore Accessibility

“…BODIPY-N3 conjugation additionally results in a new vibrational band in the ATR–IR spectra at 1680 cm –1 assigned to the ester CO vibration. In addition, the stretching vibrational band assigned to the BODIPY CN bond appeared at 1549 cm –1 as well, indicating successful BODIPY functionalization. Furthermore, the fluorescence intensity increased, indicating the presence of BODIPY (Figure f).…”

Synthesis and bioimaging of a BODIPY-based fluorescence quenching probe for Fe3+

“…The detection limit and response time of BODIPY-CL are tabulated and compared with previous literature (Table 1). [65][66][67][68][69]…”

The Role of Electron‐Donating Subunits in Cross‐Linked BODIPY Polymer Films

“…In addition, they stated that rigid-chain polymers exhibit higher fluorescence quantum yield and better thermal stability than flexible ones and that polymeric structures are more advantageous than monomers in spectrophotometric studies. [10] In this study, a radical-based thiol-ene click reaction, which is a simple, efficient, and cost-effective method for the synthesis of cross-linked BODIPY thin films, was used. Two different polymers containing donor units were synthesized and their structural properties were compared with the model compound that was previously published.…”

“…In addition, they stated that rigid‐chain polymers exhibit higher fluorescence quantum yield and better thermal stability than flexible ones and that polymeric structures are more advantageous than monomers in spectrophotometric studies. [ 10 ]…”