Chain transfer near infrared dye and high-molecular polymerization emulsion preparation method and application thereof
A technology of near-infrared dyes and infrared dyes, applied in the field of chain transfer near-infrared dyes and the preparation of polymer emulsions, can solve the problems of reduced product contrast, insufficiently uniform dye dispersion, poor light stability of dyes, etc. Effect
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Embodiment 11
[0065] Example 1 Synthesis of near-infrared dyes using 1,6-hexanedithiol as chain transfer reagent and preparation of polymerized heat-sensitive polymer emulsion
[0066] (1) Preparation of thermosensitive near-infrared dyes capable of chain transfer
[0067] Add 6 grams of near-infrared dye, 5.96 grams of 1,6-hexanedithiol and 4 grams of triethylamine into a single-port bottle, wherein, near-infrared dye: 1,6-hexanedithiol: triethylamine (molar ratio) 1 :5:5, add 50 ml of N,N dimethylformamide, stir and mix and react at 25°C under nitrogen protection for 24 hours. Centrifuge at a speed of 1 / min and collect the solid dye after drying.
[0068] Such as figure 2 Shown is the NMR image of the chain-transferable infrared dye of Example 1.
[0069] The reaction equation of above-mentioned preparation dye monomer is as follows:
[0070]
[0071] (2) Preparation of polymerized thermosensitive polymer emulsion
[0072] The oil phase is prepared by dissolving 5 grams of the ab...
Embodiment 21
[0081] Example 2 Synthesis of near-infrared dyes using 1,2-ethanedithiol as a chain transfer agent and preparation of polymerized thermosensitive polymer emulsion
[0082] (1) Preparation of thermosensitive near-infrared dyes capable of chain transfer
[0083] Add 6 grams of near-infrared dye, 7.47 grams of 1,2-hexanedithiol and 8 grams of triethylamine into a single-port bottle, wherein, near-infrared dye: 1,2-ethanedithiol: triethylamine (molar ratio) 1 :10:10, add 50 milliliters of N,N dimethylformamide, stir and mix and react for 12 hours under nitrogen protection at 25°C, after the end, add a large amount of ether to the flask for stirring and washing. Centrifuge at a speed of 1 / min and collect the solid dye after drying.
[0084] Such as image 3 Shown is the NMR map of the chain-transferable infrared dye of Example 2.
[0085] The reaction equation of above-mentioned preparation dye monomer is as follows:
[0086]
[0087] (2) Preparation of polymerized thermosen...
Embodiment 3
[0092] Example 3 Synthesis of near-infrared dyes using 2,3 dimercaptosuccinic acid as chain transfer reagent and preparation of polymerized heat-sensitive polymer emulsion
[0093] (1) Preparation of thermosensitive near-infrared dyes capable of chain transfer
[0094] Add 6 grams of near-infrared dye, 2.15 grams of 2,3 dimercaptosuccinic acid and 0.6 grams of triethylamine into a one-mouth bottle, wherein, near-infrared dye: 2,3 dimercaptosuccinic acid: triethylamine (molar ratio) 1:1.5:1.5, add 50 ml of N,N dimethylformamide, stir and mix and react at 25°C under nitrogen protection for 24 hours. Centrifuge at a speed of 1 rpm, and collect the solid dye after drying.
[0095] Such as Figure 4 Shown is the NMR image of the chain transfer infrared dye of Example 3.
[0096] The reaction equation of above-mentioned preparation dye monomer is as follows:
[0097]
[0098] (2) Preparation of polymerized thermosensitive polymer emulsion
[0099] Prepare the oil phase, diss...
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