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题名: Surface Confined Retro Diels-Alder Reaction Driven by the Swelling of Weak Polyelectrolytes
作者: Lyu, BE(吕贝尔); Cha, WL(茶文丽); Mao, TT; Wu, YZ(吴元子); Qian, HJ; Zhou, YT(周艺添); Chen, XL; Zhang, S(张慎); Liu, LY; Yang, G; Lu, ZY; Zhu, Q; Ma, HW(马宏伟)
通讯作者: Ma, HW (马宏伟)
关键词: mechanochemistry ; retro Diels-Alder reaction ; polyelectrolyte ; polymer brush ; quartz crystal microbalance
刊名: ACS APPLIED MATERIALS & INTERFACES
发表日期: 2015
DOI: 10.1021/acsami.5b00538
卷: 7, 期:11, 页:6
收录类别: SCI
部门归属: 纳米生物医学与安全研究部
英文摘要: Recently, the type of reactions driven by mechanical force has increased significantly; however, the number of methods for activating those mechanochemical reactions stays relatively limited. Furthermore, in situ characterization of a reaction is usually hampered by the inherent properties of conventional methods. In this study, we report a new platform that utilizes mechanical force generated by the swelling of surface tethered weak polyelectrolytes. An initiator with Diels-Alder (DA) adduct structure was applied to prepare the polyelectrolyte-carboxylated poly(OEGMA-r-HEMA), so that the force could trigger the retro DA reaction. The reaction was monitored in real time by quartz crystal microbalance and confirmed with atomic force microscopy and X-ray photoelectron spectroscopy. Compared with the conventional heating method, the swelling-induced retro DA reaction proceeded rapidly with high conversion ratio and selectivity. A 23.61 kcal/mol theoretical energy barrier supported the practicability of this retro DA reaction being triggered mechanically at ambient temperature. During swelling, the tensile force was controllable and persistent. This unique feature imparts this mechanochemical platform the potential to "freeze" an intermediate state of a reaction for in situ spectroscopic observations, such as surface-enhanced Raman spectroscopy and frequency generation spectroscopy.
语种: 英语
JCR小类分区: 一区
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内容类型: 期刊论文
URI标识: http://ir.sinano.ac.cn/handle/332007/3409
Appears in Collections:纳米生物医学与安全研究部_马宏伟团队_期刊论文

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Recommended Citation:
Lyu, BE,Cha, WL,Mao, TT,et al. Surface Confined Retro Diels-Alder Reaction Driven by the Swelling of Weak Polyelectrolytes[J]. ACS APPLIED MATERIALS & INTERFACES,2015,7(11):6.
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