Incorporation of Large Cycloalkene Rings into Alternating Copolymers Allows Control of Glass Transition and Hydrophobicity
Incorporation of Large Cycloalkene Rings into Alternating Copolymers Allows Control of Glass Transition and Hydrophobicity
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DOI：
10.1021/acsmacrolett.8b00510
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发表时间：
2018-09-01
影响因子：
7.015
通讯作者：
Sampson, Nicole S.
中科院分区：
文献类型：
--
作者：
Zhang, Jingling;Li, Guofang;Sampson, Nicole S.
我们先前报道了环己烯和双环[4.2.0]Oct-1(8)-ene-8-carb oxami Des发生了高效的Ru催化交替开环歧化聚合(AROMP)。通过核磁共振谱和凝胶渗透色谱证明，在双环[4.2.0]OCT-1(8)-烯-8-甲酰胺AROMP体系中，环十二烯和环十二烯还起到环烯单体的作用，从而合成了具有不同长度间隔基的线性交替共聚物。用差示扫描量热法和水接触角测定了交替共聚物的玻璃化转变温度和亲水性，结果表明随着间隔基长度的增加，共聚物的玻璃化转变温度和亲水性降低。
We previously reported that cyclohexene and bicyclo [4.2.0]oct-1 (8)-ene-8-carb oxami des undergo efficient ruthenium-catalyzed alternating ring-opening metathesis polymerization (AROMP). Here, we demonstrate that cyclodecene and cyclododecene also function as cycloalkene monomers in the bicyclo [4.2.0]oct-1 (8)-ene-8-carboxamide AROMP system, thus enabling the synthesis of linear alternating copolymers with spacers of different lengths, as demonstrated by means of NMR spectroscopy and gel permeation chromatography. The glass transition temperature and hydrophilicity of the alternating copolymers decrease as the length of the spacers increases, as determined by differential scanning calorimetry and water contact angle measurements.