Colorimetric reversibility of polydiacetylene supramolecules having enhanced hydrogen-bonding under thermal and pH stimuli.
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.
Ahn
Dong June
DJ
Department of Chemical & Biological Engineering, Korea University, Seoul 136-701, Korea. ahn@korea.ac.kr
Chae
Eun-Hyuk
EH
Lee
Gil Sun
GS
Shim
Hee-Yong
HY
Chang
Tae-Eun
TE
Ahn
Kwang-Duk
KD
Kim
Jong-Man
JM
D000114:Acetylene / Q000031:analogs & derivatives* / Q000737:chemistry*; D003124:Colorimetry / Q000379:methods*; D005231:Fatty Acids, Unsaturated / Q000737:chemistry*; D006358:Hot Temperature; D006860:Hydrogen Bonding; D006863:Hydrogen-Ion Concentration; D008081:Liposomes / Q000737:chemistry; D046911:Macromolecular Substances; D000078789:Polyacetylene Polymer; D011108:Polymers / Q000737:chemistry*; D053279:Polyynes; D017550:Spectroscopy, Fourier Transform Infrared
C493048:10, 12-pentacosadiynoic acid; D005231:Fatty Acids, Unsaturated; D008081:Liposomes; D046911:Macromolecular Substances; D000078789:Polyacetylene Polymer; D011108:Polymers; D053279:Polyynes; C082361:polydiacetylene; D000114:Acetylene