Single-Crystal Linear Polymers Through Visible Light-Triggered Topochemical Quantitative Polymerization

被引：127

作者：

Dou, Letian ^{[1
,2
,3
]}

Zheng, Yonghao ^{[1
,4
,5
]}

Shen, Xiaoqin ^{[1
]}

Wu, Guang ^{[6
]}

Fields, Kirk ^{[7
]}

Hsu, Wan-Ching ^{[2
,3
]}

Zhou, Huanping ^{[2
,3
]}

Yang, Yang ^{[2
,3
]}

Wudl, Fred ^{[1
,4
,5
,6
]}

机构：

[1] Univ Calif Santa Barbara, Calif NanoSyst Inst, Santa Barbara, CA 93106 USA

[2] Univ Calif Los Angeles, Dept Mat Sci & Engn, Los Angeles, CA 90095 USA

[3] Univ Calif Los Angeles, Calif NanoSyst Inst, Los Angeles, CA 90095 USA

[4] Tohoku Univ, Adv Inst Mat Res, World Premier Int Res Ctr WPI Initiat Program WPI, Santa Barbara, CA 93106 USA

[5] Univ Calif Santa Barbara, Calif NanoSyst Inst, Joint Ctr, Santa Barbara, CA 93106 USA

[6] Univ Calif Santa Barbara, Dept Mat, Santa Barbara, CA 93106 USA

[7] Univ Calif Santa Barbara, Dept Mech Engn, Santa Barbara, CA 93106 USA

来源：

SCIENCE | 2014年 / 343卷 / 6168期

关键词：

SOLID-STATE POLYMERIZATION; 4-CENTER TYPE PHOTOPOLYMERIZATION; 2,4-HEXADIYNE-1,6-DIOL; 2,5-DISTYRYLPYRAZINE;

D O I：

10.1126/science.1245875

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

One of the challenges in polymer science has been to prepare large-polymer single crystals. We demonstrate a visible light-triggered quantitative topochemical polymerization reaction based on a conjugated dye molecule. Macroscopic-size, high-quality polymer single crystals are obtained. Polymerization is not limited to single crystals, but can also be achieved in highly concentrated solution or semicrystalline thin films. In addition, we show that the polymer decomposes to monomer upon thermolysis, which indicates that the polymerization-depolymerization process is reversible. The physical properties of the polymer crystals enable us to isolate single-polymer strands via mechanical exfoliation, which makes it possible to study individual, long polymer chains.

引用

页码：272 / 277

页数：6

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