Sequence polymer with anti-counterfeiting identification function, preparation method and applications thereof
A polymer and sequence technology, applied in the field of precise polymer synthesis, can solve problems such as the inability to quickly read anti-counterfeiting information, cumbersome synthesis steps, and poor thermal stability of products
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Embodiment 1
[0090] The preparation of the intermediate shown in embodiment 1 precise macromolecular formula (IV)
[0091] This example provides an intermediate compound (formula (IV)) for preparing the sequence polymer (formula (I) and formula (II)) with anti-counterfeiting identification function, and its preparation reaction equation is as follows:
[0092]
[0093] The specific preparation operation is as follows: add maleimide (30g, 0.31mol) and furan (42.2g, 0.62mol) in a dry 1L round bottom flask, dissolve with 250mL toluene, react at 90 ° C, condense and reflux, and react 10- After 12 hours, cool to room temperature, suction filter and wash the filter cake with icy toluene to obtain 46.5 g of white powder with a yield of 94%. Such as figure 1 as shown, figure 1 It is the NMR spectrum of furan-protected maleimide, from which it can be seen that the compound has been successfully synthesized.
[0094] In a dry 250mL three-necked flask, maleimide (10g, 0.061mol), K 2 CO 3 (16....
Embodiment 2
[0096] Example 2 Preparation of sequence polymer (formula (I) or formula (II)) with anti-counterfeiting identification function
example 2-1
[0097] Example 2-1: The following example provides a sequence macromolecule (R 1 for ), its preparation reaction equation is as follows:
[0098]
[0099] The specific preparation operation is as follows: add monomer 1mer (5.5g, 17mmol) into a dry 100mL three-necked flask, then add 50mL toluene to dissolve it, and react at 110°C for 10-12h. After the reaction was completed, the toluene solution was removed by rotary evaporation after cooling to room temperature and dried to obtain light yellow solid powder 1mer-DeFu (complete conversion, quantitative yield). Such as Figure 4 as shown, Figure 4 It is the H NMR spectrum of 1mer after removing the furan protecting group. It can be seen from the figure that the characteristic peaks corresponding to furan have completely disappeared, which proves that the deprotection is complete.
[0100] Add monomer 1mer (5.5g, 17mmol) into a dry 250mL three-necked flask and dissolve it completely with 150mL of anhydrous methanol, ref...
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