Squaraine polytriazole with near-infrared optic absorption, and preparation method thereof
A squaraine polytriazole, near-infrared optics technology, applied in the field of near-infrared optical absorption materials and its preparation, can solve the problems of expensive rhodium metal catalysts, etc., to achieve improved conjugation and thermal stability, strong near-infrared optics The effect of absorption performance and simple and easy preparation method
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Embodiment 1
[0039] Diethynyl-9,9-bis(dodecyl)fluorene, bis(N-methyl-N-hydroxyethyl propargyl ether aniline) squaraine and 1,4-diazidobutaneClick to prepare The polytriazole P1, its structural formula is:
[0040]
[0041] In a dry polymerization tube with a stirring bar, add diethynyl-9,9-bis(dodecyl)fluorene (110.0 mg, 0.20 mmol), bis(N-methyl-N-hydroxyethyl propargyl ether aniline) squaraine (91.2mg, 0.20mmol) and 1,4-diazidobutane monomer (56.0mg, 0.40mmol), sodium ascorbate (10mol%), then add DMF (4mL) to The reactants were dissolved and triethylamine TEA (0.3 mL) was added as a ligand. Feed N into the polymerization tube 2 Purge for 30min, then in N 2 Add CuSO under atmosphere 4 ·5H 2 O(5mol%), continue to feed N 2 , and finally seal the polymerization tube and react at 45°C for 2d. After the reaction, the reaction solution was poured into a rapidly stirred saturated aqueous solution of disodium EDTA. Precipitation occurred, filtered, washed three times with deionized water...
Embodiment 2
[0043] Diethynyl-9,9-bis(dodecyl)fluorene, bis(N-methyl-N-hydroxyethyl propargyl ether aniline) squaraine and 1,4-diazidobutaneClick to prepare And the polytriazole P2 end-capped with p-nitroazo monoalkyne, its structural formula is:
[0044]
[0045] In a dry polymerization tube with a stirring bar, add diethynyl-9,9-bis(dodecyl)fluorene (110.0 mg, 0.20 mmol), bis(N-methyl-N-hydroxyethyl propargyl ether aniline) squaraine (91.2 mg, 0.20 mmol), p-nitroazomonoacetylene (1.124 mg, 0.004 mmol) and 1,4-diazidobutane monomer (56.0 mg, 0.40 mmol) , sodium ascorbate (10mol%), and DMF (4mL) was added to dissolve the reactant, and triethylamine TEA (0.3mL) was added as a ligand. Feed N into the polymerization tube 2 Purge for 30min, then in N 2 Add CuSO under atmosphere 4 ·5H 2 O(5mol%), continue to feed N 2 , and finally seal the polymerization tube and react at 45°C for 2d. After the reaction, the reaction solution was poured into a rapidly stirred saturated aqueous solutio...
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