聚[缩水甘油基低聚（氧乙烯）氨基甲酸酯] s（PGn-EOmR'和R-PGn-EOmR'）：受控合成及其分子参数（n和m），侧基（R'）和端基（R的影响）关于热响应性,Polymer Chemistry

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聚[缩水甘油基低聚（氧乙烯）氨基甲酸酯] s（PGn-EOmR'和R-PGn-EOmR'）：受控合成及其分子参数（n和m），侧基（R'）和端基（R的影响）关于热响应性
Polymer Chemistry ( IF 4.1 ) Pub Date : 2021-3-31 , DOI: 10.1039/d1py00070e
Tingyu He _{1,

2,

3,

4,

5} , Yanqiu Wang _{1,

2,

3,

4,

5} , Liang Xu _{1,

2,

3,

4,

5} , Xiangming Fu _{1,

2,

3,

4,

5} , Atsushi Narumi _{6,

7,

8,

9} , Shin-ichiro Sato _{10,

11,

11,

12,

13} , Xiande Shen _{1,

2,

3,

4,

5} , Toyoji Kakuchi _{1,

2,

3,

4,

5}

Affiliation

描述了涉及聚（缩水甘油）（PG）-主链和热响应性低聚（氧乙烯）-侧链的甘油基聚合物的受控合成。进行苄基缩水甘油醚（BnGE）的有机催化开环聚合反应，以制备聚合度（n）是预定的聚（苄基缩水甘油醚）（PBnGE _n s），然后除去固有的保护基。对于这些聚合/脱保护阶段，强调了两种主要类型聚合物的合成，其中一种是没有任何特定端基（PG _n）的“原始” PG ，另一种是具有疏水性脂肪族和芳香族基团（R-PG _n）。PG _n和R-PG _n采用基于异氰酸酯衍生物与羟基侧基加成反应的后改性反应，从而制得结构多样的聚[缩水甘油基低聚（氧乙烯）氨基甲酸酯]。该结构通常可以表示为PG _n -EO _m R'和R-PG _n -EO _m R'，其中（i）聚合度（n），（ii）侧基外围的烷基（R'），（iii）氧乙烯链数（m），和（iv）可以独立地控制和/或选择α-端基（R）。详细描述了参数/结构（i）-（iv）对热响应特性的影响以及水性介质中相变的支持数据。

"点击查看英文标题和摘要"

Poly[glycidyl oligo(oxyethylene)carbamate]s (PGn-EOmR′ and R-PGn-EOmR′): controlled synthesis and effects of molecular parameters (n and m), side groups (R′), and end-groups (R) on thermoresponsive properties

The controlled syntheses of glycerol-based polymers, involving poly(glycidol) (PG)-backbones and thermoresponsive oligo(oxyethylene)-side chains, are described. The organocatalytic ring-opening polymerizations of benzyl glycidyl ether (BnGE) were performed to produce poly(benzyl glycidyl ether)s (PBnGE_ns) in which the degree of polymerization (n) was predetermined, followed by the removal of the inherent protection groups. For these polymerization/deprotection stages, the synthesis of two major types of polymers is emphasized, in which one is “pristine” PG without any specific end-groups (PG_n) and the other is the α-end functionalized PG with hydrophobic aliphatic and aromatic groups (R-PG_n). The post-modification reactions based on the addition reactions of isocyanate derivatives to the hydroxyl side groups were adopted for PG_n and R-PG_n, thus producing poly[glycidyl oligo(oxyethylene)carbamate]s with diverse structures. The structures can generally be expressed as PG_n-EO_mR′ and R-PG_n-EO_mR′, where (i) the degree of polymerization (n), (ii) the alkyl group at the periphery of the side groups (R′), (iii) the number of oxyethylene chains (m), and (iv) the α-end group (R) can be independently controlled and/or selected. The effects of the parameters/structures (i)–(iv) on the thermoresponsive properties and the supporting data for the phase transitions in aqueous media are described in detail.

更新日期：2021-04-12

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