Alkynylated Cellulose Nanocrystals Simultaneously Serving as Chiral Source and Stabilizing Agent for Constructing Optically Active Helical Polymer Particles
Alkynylated Cellulose Nanocrystals Simultaneously Serving as Chiral Source and Stabilizing Agent for Constructing Optically Active Helical Polymer Particles
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炔化纤维素纳米晶同时作为手性源和稳定剂构建光学活性螺旋聚合物颗粒
DOI：
10.1021/acs.macromol.6b02070
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发表时间：
2016-10
期刊：
影响因子：
5.5
通讯作者：
Deng, Jianping
中科院分区：
文献类型：
--
作者：
Yu, Huli;Deng, Jianping
为了充分利用纤维素纳米晶的手性，开发新型的手性聚合物材料，制备了炔基化的纤维素纳米晶，并与非手性乙酰基单体在水介质中进行了悬浮聚合。炔基碳纳米管的手性被有效地转移到外消旋螺旋聚合物链上，从而诱导了以单手为主的聚合物螺旋性。此外，炔基碳纳米管同时还起到了共聚单体和稳定剂的作用，直接提供了旋光活性的微粒子(400-800μm)，这些微粒是由手性螺旋聚合物链构成的。因此，炔化碳纳米管在我们的策略中扮演了三重角色：手性来源、共聚单体和执行悬浮聚合的稳定剂。扫描电子显微镜照片显示成功地形成了规则球形的微粒，圆二色谱显示了单手螺旋聚合物链的形成及其微粒的光学活性。那个P..。
To take advantage of the chirality of cellulose nanocrystals (CNCs) and to develop novel chiral polymer materials, alkynylated CNCs (alkynyl-CNCs) were prepared and copolymerized with an achiral acetylenic monomer through suspension polymerization in aqueous media. The chirality of the alkynyl-CNCs was efficiently transferred to racemic helical polymer chains, by which inducing predominantly one-handed polymer helicity. Moreover, alkynyl-CNCs simultaneously acted as a comonomer and stabilizing agent, directly providing optically active microparticles (400–800 μm) constructed by chirally helical polymer chains. So the alkynylated CNCs played triple roles in our strategy: chiral source, comonomer, and stabilizing agent for performing suspension polymerizations. SEM images showed the successful formation of microparticles with regular spherical morphology, while circular dichroism spectra demonstrated the formation of one-handed helical polymer chains and optical activity of the microparticles thereof. The p...
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影响因子：
5.5
作者：
James F. Reuther;Dumindika A. Siriwardane;Raymond Campos;B. Novak
通讯作者：
James F. Reuther;Dumindika A. Siriwardane;Raymond Campos;B. Novak
影响因子：
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作者：
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通讯作者：
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影响因子：
6.2
作者：
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通讯作者：
Capron, Isabelle
影响因子：
5.5
作者：
Li, Shu;Liu, Kun;Zhang, Afang
通讯作者：
Zhang, Afang