期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 58, 期 28, 页码 9581-9585出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201903148
关键词
alkyl-pi engineering; conjugated polymers; rheology; solvent-free fluids; viscoelasticity
资金
- JSPS KAKENHI [JP18H03922]
- National Science Foundation of China [51803126]
- Shenzhen Peacock Plan [KQTD20170330110107046]
- Shenzhen Science and Technology Research Grant [JCYJ20170302150144008]
- Start-up Foundation of Shenzhen University [2016003]
- Science Foundation of Guangdong Province [2017A030310397, 2018A0303130157]
The introduction of optoelectronic functions into viscoelastic polymers can yield highly sophisticated soft materials for biomedical devices and autonomous robotics. However, viscoelasticity and excellent optoelectronic properties are difficult to achieve because the presence of a large number of pi-conjugated moieties drastically stiffens a polymer. Here, we report a variation of additive-free viscoelastic conjugated polymers (VE-CPs) at room temperature by using an intact pi-conjugated backbone and bulky, yet flexible, alkyl side chains as internal plasticizers. Some of these polymers exhibit gel-and elastomer-like rheological behaviors without cross-linking or entanglement. Furthermore, binary blends of these VE-CPs exhibit a never-seen-before dynamic miscibility with self-restorable and mechanically induced fluorescence color changes.
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