Colorimetric Reversibility of Polydiacetylene Supramolecules Having Enhanced Hydrogen-Bonding under Thermal and pH Stimuli
摘要:
To investigate the role of hydrogen-bonding on colorimetric transition of polydiacetylene supramolecules, novel diacetylene derivatives allowing various hydrogen-bonding states were synthesized by coupling carboxy-substituted (ortho-, meta-, and para-) anilide groups with a typical single-chain diacetylene lipid. One with a terminal carboxyl group at the meta position provided the resulting supramolecular Langmuir-Schaefer films with enhanced hydrogen-bonding, and hence resulted in unprecedented colorimetric reversibility under both thermal and pH stimuli.
Cyclodextrin-induced Color Changes in Polymerized Diacetylene Langmuir-Schaefer Films
作者:Jae-Taek Cho、Sung-Min Woo、Dong June Ahn、Kwang-Duk Ahn、Haiwon Lee、Jong-Man Kim
DOI:10.1246/cl.2003.282
日期:2003.3
We have observed the first example of a cyclodextrin-induced color change of polymerizeddiacetylenefilm sensor. The PDA film, prepared from a diacetylene monomer containing a terminal anilide moiety was found to preferentially interact with α-cyclodextrin causing a color transition which is both time and concentration dependent.