Premium
pH‐Responsive Host−Guest Complexation between a Water‐solublePillar[7]Arene and a 2,7‐Diazapyrenium Salt and Its Application inControllable Self‐assembly
Author(s) -
Li Zhengtao,
Yang Jie,
Huang Feihe
Publication year - 2018
Publication title -
chinese journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.28
H-Index - 41
eISSN - 1614-7065
pISSN - 1001-604X
DOI - 10.1002/cjoc.201700601
Subject(s) - chemistry , amphiphile , molecular recognition , pillar , titration , two dimensional nuclear magnetic resonance spectroscopy , self assembly , fluorescence , salt (chemistry) , calixarene , stereochemistry , molecule , organic chemistry , copolymer , physics , structural engineering , quantum mechanics , engineering , polymer
A novel host−guest recognition motif based on a water‐soluble pillar[7]arene ( WP7 ) and a 2,7‐diazapyrenium salt ( DMDAP ) was prepared. According to the integrated results of 1 H NMR, 2D NOESY, UV–vis spectroscopy and fluorescence titration experiments, we demonstrated that the molecular recognition of WP7 to DMDAP in water not only has high association constant but also has pH‐responsiveness. Subsequently, we took advantage of this molecular recognition motif to fabricate a supra‐amphiphile based on WP7 and an amphiphilic 2,7‐diazapyrenium derivative DAPAC . Its controllable self‐assembly in water was also investigated by means of TEM and DLS techniques.