Molecular basis of cooperativity in pH-triggered supramolecular self-assembly.
Molecular basis of cooperativity in pH-triggered supramolecular self-assembly.
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在pH触发的超分子自组装中合作的分子基础。
DOI:
10.1038/ncomms13214
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发表时间:
2016-10-27
影响因子:
16.6
通讯作者:
Gao J
中科院分区:
文献类型:
--
作者:
Li Y;Zhao T;Wang C;Lin Z;Huang G;Sumer BD;Gao J
Supramolecular self-assembly offers a powerful strategy to produce high-performance, stimuli-responsive nanomaterials. However, lack of molecular understanding of stimulated responses frequently hampers our ability to rationally design nanomaterials with sharp responses. Here we elucidated the molecular pathway of pH-triggered supramolecular self-assembly of a series of ultra-pH sensitive (UPS) block copolymers. Hydrophobic micellization drove divergent proton distribution in either highly protonated unimer or neutral micelle states along the majority of the titration coordinate unlike conventional small molecular or polymeric bases. This all-or-nothing two-state solution is a hallmark of positive cooperativity. Integrated modelling and experimental validation yielded a Hill coefficient of 51 in pH cooperativity for a representative UPS block copolymer, by far the largest reported in the literature. These data suggest hydrophobic micellization and resulting positive cooperativity offer a versatile strategy to convert responsive nanomaterials into binary on/off switchable systems for chemical and biological sensing, as demonstrated in an additional anion sensing model. Understanding stimuli responsiveness on a molecular level can help with the rational design of nanomaterials with sharp responses. Here, Gao and co-workers have shown the molecular pathway of the supramolecular self-assembly of a series of ultra-pH sensitive block copolymers.
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影响因子:
15
作者:
Ma, Xinpeng;Wang, Yiguang;Zhao, Tian;Li, Yang;Su, Lee-Chun;Wang, Zhaohui;Huang, Gang;Sumer, Baran D.;Gao, Jinming
通讯作者:
Gao, Jinming
影响因子:
64.8
作者:
Mirkin, CA;Letsinger, RL;Storhoff, JJ
通讯作者:
Storhoff, JJ
DOI:
10.1007/bf00658981
发表时间:
1988-08-01
期刊:
JOURNAL OF INCLUSION PHENOMENA
影响因子:
--
作者:
LEHN, JM
通讯作者:
LEHN, JM
影响因子:
10.8
作者:
Choi, YH;Liu, F;Kim, SW
通讯作者:
Kim, SW
影响因子:
4.6
作者:
Koper, Ger J. M.;Borkovec, Michal
通讯作者:
Borkovec, Michal