Solvent-Induced White-Light Emission of Amphiphilic Rod–Rod Poly(3-triethylene glycol thiophene)-block-poly(phenyl isocyanide) Copolymer
Solvent-Induced White-Light Emission of Amphiphilic Rod–Rod Poly(3-triethylene glycol thiophene)-block-poly(phenyl isocyanide) Copolymer
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DOI：
10.1021/ma4016664
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发表时间：
2013-09
期刊：
影响因子：
5.5
通讯作者：
Na Liu;Cheng-Gang Qi;Ying Wang;Deng-Feng Liu;Jun Yin;Yuanyuan Zhu;Zongquan Wu
中科院分区：
文献类型：
--
作者：
Na Liu;Cheng-Gang Qi;Ying Wang;Deng-Feng Liu;Jun Yin;Yuanyuan Zhu;Zongquan Wu
以Ni(dppp)Cl2为单催化剂，通过机理不同的顺序嵌段共聚，在一釜内合成了一类由亲水性π共轭聚（3-三甘醇噻吩）（P3(TEG)T）和疏水性刚性棒状聚（苯基异氰酸酯）（PPI）组成的两亲性棒-棒双嵌段共聚物。亲水性的P3(TEG)T均聚物在四氢呋喃和甲醇中自组装成不同尺寸的定义良好的纳米颗粒，在四氢呋喃中表现出橙光发射，在甲醇中表现出红光发射。有趣的是，所得的P3(TEG)T-b-PPI嵌段共聚物被发现自组装成各种定义良好的超分子结构，如四氢呋喃中的纳米原纤维，甲醇中的胶束，以及三氢呋喃和甲醇的三分之二混合物中的囊泡。这些嵌段共聚物在溶液中的组装表现出独特的发光，根据自组装形态和所用溶剂的不同，其发光颜色从橙红色到蓝色不等。白光发射可以随时…
A class of amphiphilic rod–rod diblock copolymers composed of hydrophilic π-conjugated poly(3-triethylene glycol thiophene) (P3(TEG)T) and hydrophobic rigid-rod-like poly(phenyl isocyanide) (PPI) was synthesized in one pot via mechanistically distinct, sequential block copolymerization with Ni(dppp)Cl2 as a single catalyst. The hydrophilic P3(TEG)T homopolymer self-assembled into well-defined nanoparticles in THF and methanol with different dimensions and exhibited orange-light emission in THF and red-light emission in methanol. Interestingly, the resultant P3(TEG)T-b-PPI block copolymers were found to self-assembled into various well-defined supramolecular structures, such as nanofibrils in THF, micelles in methanol, and vesicles in 3/2 mixtures of THF and methanol. The assemblies of these block copolymers in solutions exhibited unique light emissions with the emission color spanned widely from orange red to blue depending on self-assembled morphology and solvents used. White light emission can be readil...