Conjugated polymer material of fluorine, pyrene and perylene and preparation thereof
A technology of conjugated polymers and polymers, applied in the field of conjugated polymer materials and their preparation
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[0086] Example 1: Synthesis of polymer structure I1B (m=1, where the alkyl group is n-octyl)
[0087] Poly[(9,9-Di-n-octylfluorene-2,7-diyl)-alt-co-(pyrene-1,6(8)-diyl)](PDOFP). 2,7-Dibromo-9,9-dioctylfluorene (M1) (5.4844g, 1.0mmol), 1,6(8)-dibromopyrene boronate (PB2) (0.3700g, 1.0mmol) were placed In a 100 mL flask pre-placed with a stirring bar, evacuated, and after nitrogen was purged three times, oxygen-free toluene (20 mL) was injected into the flask with a syringe. The mixture was heated to 80°C and stirred until the monomers were completely dissolved. 3 ) 4 ) (0.01 mmol) in toluene (10 mL), followed by a syringe into 2M sodium carbonate solution (5 mL) saturated with oxygen-free nitrogen. Then the system was heated to 90°C, after 48 hours of reaction, phenylboronic acid (1.2 g, 0.1 mmol) was added for 12 hours to seal off the bromine end of the copolymer, and then bromobenzene (1 mL, 1.5 g, 10 mmol) was added and reacted for 12 hours to seal off the copolymer. bor...
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[0093] Example 2: Absorption spectra, photoluminescence spectroscopy of solutions and films of the polymer PDOFP (product in Example 1).
[0094] The PDOFP was dissolved in tetrahydrofuran solution, and the absorption and emission spectra were measured by Shimadzu UV-3150 ultraviolet-visible spectrometer and RF-530XPC fluorescence spectrometer. The photoluminescence spectrum is excited by the absorption maximum wavelength of UV absorption. The solid film is formed by dripping the solution onto a transparent glass slide after the solvent evaporates. The fluorescence quantum efficiency of the solution is given by 10 in cyclohexane -6 The 9,10-diphenylanthracene solution of M (quantum efficiency 0.9) was measured as a standard and the measured value was 76%.
[0095] In the wavelength range greater than 300 nm, the maximum absorption peak of PDOFP solution is 383 nm, the absorption peak is relatively smooth, and the maximum emission of the photoluminescence spectrum is 442 nm. ...
Example Embodiment
[0097] Example 3: Synthesis of Polymer Structure I 1A (wherein the alkyl group is n-octyl)
[0098] Poly[(9,9-Di-n-octylfluorene-2,7-diyl)-alt-co-(pyrene-2,7-diyl)]. 2,7-Dibromo-9,9-dioctylfluorene (M1) (5.4844g, 1.0mmol), 2,7-dibromopyrene boronate (PB1) (0.3700g, 1.0mmol), tetrakis(tris(tris)) Phenylphosphide)palladium (Pd(PPh) 3 ) 4 ) (0.01 mmol) in toluene solution (10 mL), and a pale yellow solid (0.58 g, 70%) can be obtained according to the preparation method similar to that of PDOFP. Anal.Calcd.C, 91.78; H, 8.22. found C, 91.52; H, 8.27. The polymer was dissolved in THF and the molecular weight of the polymer was determined by gel chromatography (THF as eluent). The number average molecular weight (Mn) was 49869, the weight average molecular weight (Mw) was 81286, and the polydispersity coefficients were 1.63, respectively. The difference between polymer I1A and polymer I1B is that in the former, pyrene is connected to fluorene through 2,7, while the latter include...
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