Synthesis of Dense 1,2,3-Triazole Polymers Soluble in Common Organic Solvents

被引：18

作者：

Yamasaki, Shota ^{[1
]}

Kamon, Yuri ^{[1
]}

Xu, Linlin ^{[1
]}

Hashidzume, Akihito ^{[1
]}

机构：

[1] Osaka Univ, Grad Sch Sci, Dept Macromol Sci, 1-1 Machikaneyama Cho, Toyonaka, Osaka 5600043, Japan

来源：

POLYMERS | 2021年 / 13卷 / 10期

关键词：

Huisgen cycloaddition polymerization; copper(I)-catalyzed azide-alkyne cycloaddition polymerization; t-butyl; 3-azide-6-hexynoate; 1,2,3-triazole; BUILDING-BLOCKS; CLICK CHEMISTRY; 1,3-DIPOLAR CYCLOADDITIONS; SOLID-PHASE; POLYMERIZATION; AGGREGATION; COMPLEXES; OLIGOMERS; LIGANDS; BINDING;

D O I：

10.3390/polym13101627

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Aiming at synthesis of dense 1,2,3-triazole polymers soluble in common organic solvents, a new 3-azido-1-propyne derivative, i.e., t-butyl 4-azido-5-hexynoate (tBuAH), was synthesized and polymerized by copper(I)-catalyzed azide-alkyne cycloaddition (CuAAC) and Huisgen cycloaddition (HC). CuAAC polymerization produced poly(tBuAH) composed of 1,4-disubstituted 1,2,3-triazole units (1,4-units), whereas HC polymerization gave poly(tBuAH) composed of 1,4- and 1,5-disubstituted 1,2,3-triazole units (1,4- and 1,5-units). In HC polymerization, the fraction of 1,4-unit (f(1,4)) decreased with the permittivity of solvent used. Differential scanning calorimetry data indicated that the melting point of poly(tBuAH) increased from 61 to 89 degrees C with increasing f(1,4) from 0.38 to 1.0, indicative of higher crystallinity of poly(tBuAH) composed of 1,4-unit. Preliminary steady-state fluorescence study indicated that all the poly(tBuAH) samples of different f(1,4) emitted weak but significant fluorescence in DMF. The maximum of fluorescence band shifted from ca. 350 to ca. 450 nm with varying the excitation wavelength from 300 to 400 nm.

引用

页数：14

共 43 条

[1]

Abboud JLM, 2001, EUR J ORG CHEM, V2001, P3013

[2] Click Chemistry: 1,2,3-Triazoles as Pharmacophores [J].