Fully Flexible Covalent Organic Frameworks for Fluorescence Sensing 2,4,6-Trinitrophenol and p-Nitrophenol
Abstract
:1. Introduction
2. Materials and Methods
2.1. Materials
2.2. Methods
2.3. Fluorescence Spectra
2.3.1. Solid State Fluorescence
2.3.2. Fluorescence Quenching Experiments
2.3.3. Fluorescence Stability Experiments
3. Results and Discussion
3.1. Structural Characterization
3.2. Effect of Solvent on the Fluorescence Performance of the FFCP COFs
3.3. Response Time
3.4. Sensitivity of the FFCP COFs
3.5. Selectivity of the FFCP COFs
3.6. Fluorescence Sensing Mechanism of the FFCP COFs
4. Conclusions
Supplementary Materials
Author Contributions
Funding
Conflicts of Interest
References
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COFs | The Equations | Regression Coefficient (R) | Concentration Range of TNP or p-NP (mol L−1) | Limit of Detections (mol L−1) |
---|---|---|---|---|
HDADE | I0/I = 1.0016 + 6.29 × 104 [TNP] | 0.966 | 0 to 1.0 × 10−5 | 1.19 × 10−11 |
HBAPB | I0/I = 0.9883 + 2.17 × 105 [p-NP] | 0.9984 | 0 to 5.0 × 10−5 | 6.91 × 10−12 |
HBPDA | I0/I = 0.6245 + 2.48 × 105 [p-NP] | 0.9960 | 0 to 7.5 × 10−5 | 6.05 × 10−12 |
Sample | NACs | Ksv (L mol−1) | LODs (mol L−1) | Refs |
---|---|---|---|---|
Py-Azine COF | TNP | 7.6 × 104 | - | [24] |
o-NP | 5.9 × 102 | - | ||
FL-SNW-DPP-0.11 | TNP | 5.3 × 104 | - | [25] |
TfpBDH-CONs | TNP | 2.6 × 104 | - | [26] |
p-NP | − | |||
TAT-COF-2 | NB | − | 10 × 10–6 | [58] |
TRIPTA | PA | 2.7 × 106 | - | [59] |
p-NP | − | - | ||
3D-Py-COF | TNP | 3.1 × 104 | - | [27] |
COF-BABD-DB | TNP | 5.7 × 105 | - | [28] |
p-NP | 1.55 × 104 | - | ||
COF-BABD-BZ | TNP | 4.5 × 105 | - | |
p-NP | 3.2 × 104 | - | ||
PAF-130 | TNP | 4.69 × 104 | - | [57] |
o-NP | − | - | ||
HBD | p-NP | 7.91 × 104 | 4.6 × 10−11 | [5] |
HDASD | p-NP | 1.16 × 105 | 2.59 × 10−10 | |
HDOBD | p-NP | 3.76 × 104 | 7.98 × 10−11 | |
HDADE | TNP | 6.29 × 104 | 1.19 × 10−11 | This work |
HBAPB | p-NP | 2.17 × 105 | 6.91 × 10−12 | |
HBPDA | p-NP | 2.48 × 105 | 6.05 × 10−12 |
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Zhu, H.; Geng, T.-M.; Tang, K.-B. Fully Flexible Covalent Organic Frameworks for Fluorescence Sensing 2,4,6-Trinitrophenol and p-Nitrophenol. Polymers 2023, 15, 653. https://doi.org/10.3390/polym15030653
Zhu H, Geng T-M, Tang K-B. Fully Flexible Covalent Organic Frameworks for Fluorescence Sensing 2,4,6-Trinitrophenol and p-Nitrophenol. Polymers. 2023; 15(3):653. https://doi.org/10.3390/polym15030653
Chicago/Turabian StyleZhu, Hai, Tong-Mou Geng, and Kai-Bin Tang. 2023. "Fully Flexible Covalent Organic Frameworks for Fluorescence Sensing 2,4,6-Trinitrophenol and p-Nitrophenol" Polymers 15, no. 3: 653. https://doi.org/10.3390/polym15030653