Synthesis of Novel Hyperbranched Polybenzo-Bisthiazole Amide with Donor–Acceptor (D-A) Architecture, High Fluorescent Quantum Yield and Large Stokes Shift
Abstract
:1. Introduction
2. Materials and Methods
2.1. Starting Materials
2.2. Polymerization
2.3. Measurements
3. Results and Discussion
3.1. NMR Analysis
3.2. FTIR Analysis
3.3. GPC Analysis
3.4. UV–Vis Absorption and Fluorescence Properties of HP–COOH and HP–NH2
3.5. XRD Analysis
3.6. Thermal Analysis
4. Conclusions
Supplementary Materials
Acknowledgments
Conflicts of Interest
References
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Samples | Monomer Feed Ratio of A2 to B3 | Mn | Mw | Mp | Mz | Mz+1 | PDI a |
---|---|---|---|---|---|---|---|
HP–COOH | 1:1 | 7426 | 10,195 | 12,314 | 13,387 | 16,547 | 1.37 |
HP–NH2 | 9:4 | 10,280 | 19,291 | 11,035 | 33,938 | 49,610 | 1.88 |
Samples | λabs (nm) | λem (nm) | Stokes Shift (nm/eV) a | Egopt (eV) b | ФFL c |
---|---|---|---|---|---|
HP–COOH in DMSO | 285, 336 | 427, 517 | 137/0.86 | 3.13 | 77.75% |
HP–COOH in DMF | 280, 333 | 518 | 128/0.79 | 2.55 | 104.65% |
HP–COOH Film | 305 | 436, 462 | 131/0.42 | 3.02 | 2.01% |
HP–NH2 in DMSO | 283, 336 | 529 | 149/0.92 | 2.97 | 81.14% |
HP–NH2 in DMF | 280, 342 | 537 | 147/0.87 | 2.76 | 118.72% |
HP–NH2 Film | 301, 339 | 480 | 179/0.86 | 2.55 | 4.89% |
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Hu, X. Synthesis of Novel Hyperbranched Polybenzo-Bisthiazole Amide with Donor–Acceptor (D-A) Architecture, High Fluorescent Quantum Yield and Large Stokes Shift. Polymers 2017, 9, 304. https://doi.org/10.3390/polym9080304
Hu X. Synthesis of Novel Hyperbranched Polybenzo-Bisthiazole Amide with Donor–Acceptor (D-A) Architecture, High Fluorescent Quantum Yield and Large Stokes Shift. Polymers. 2017; 9(8):304. https://doi.org/10.3390/polym9080304
Chicago/Turabian StyleHu, Xiaobing. 2017. "Synthesis of Novel Hyperbranched Polybenzo-Bisthiazole Amide with Donor–Acceptor (D-A) Architecture, High Fluorescent Quantum Yield and Large Stokes Shift" Polymers 9, no. 8: 304. https://doi.org/10.3390/polym9080304