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Novel NBN-Embedded Polymers and Their Application as Fluorescent Probes in $Fe^{3+}$ and $Cr^{3+}$ Detection
| Content Provider | MDPI |
|---|---|
| Author | Li, Tao Sheng, Yu-Jing Sun, Xiao-Li Wan, Wen-Ming Liu, Yanru Qian, Qingrong Chen, Qinghua |
| Copyright Year | 2022 |
| Description | The isosteric replacement of C═C by B–N units in conjugated organic systems has recently attracted tremendous interest due to its desirable optical, electronic and sensory properties. Compared with BN-, NBN- and BNB-doped polycyclic aromatic hydrocarbons, NBN-embedded polymers are poised to expand the diversity and functionality of olefin polymers, but this new class of materials remain underexplored. Herein, a series of polymers with BNB-doped π-system as a pendant group were synthesized by reversible addition-fragmentation chain transfer (RAFT) polymerization from NBN-containing vinyl monomers, which was prepared via intermolecular dehydration reaction between boronic acid and diamine moieties in one pot. Poly{2-(4-Vinylphenyl)-2,3-dihydro-1H-naphtho[1,8-de][1,3,2]diazaborinine} (P1), poly{N-(4-(1H-naphtho[1,8-de][1,3,2]diazaborinin-2(3H)-yl)phenyl)acrylamide} (P2) and poly{N-(4-(1H-benzo[d][1,3,2]diazaborol-2(3H)-yl)phenyl)acrylamide} (P3) were successfully synthesized. Their structure, photophysical properties and application in metal ion detection were investigated. Three polymers exhibit obvious solvatochromic fluorescence. As fluorescent sensors for the detection of $Fe^{3+}$ and $Cr^{3+}$, P1 and P2 show excellent selectivity and sensitivity. The limit of detection (LOD) achieved by $Fe^{3+}$ is 7.30 nM, and the LOD achieved by $Cr^{3+}$ is 14.69 nM, which indicates the great potential of these NBN-embedded polymers as metal fluorescence sensors. |
| Starting Page | 2025 |
| e-ISSN | 20734360 |
| DOI | 10.3390/polym14102025 |
| Journal | Polymers |
| Issue Number | 10 |
| Volume Number | 14 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2022-05-16 |
| Access Restriction | Open |
| Subject Keyword | Polymers Polymer Science Nbn-embedded Polymers Boron-containing Polymers Solvatochromic Fluorescence Metal Ion Detection |
| Content Type | Text |
| Resource Type | Article |
