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Polydiacetylenes Functionalized with Chelidamic Acid and 2,2'‐Dipicolylamine for Colorimetric Responses to Cadmium Ions
Author(s) -
Pham Thanh Chung,
Kim Hyun Sung,
Lee Songyi
Publication year - 2021
Publication title -
bulletin of the korean chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.237
H-Index - 59
ISSN - 1229-5949
DOI - 10.1002/bkcs.12177
Subject(s) - chemistry , titration , naked eye , amine gas treating , cadmium , metal ions in aqueous solution , ligand (biochemistry) , selectivity , ion , inorganic chemistry , nuclear chemistry , photochemistry , metal , polymer chemistry , organic chemistry , chromatography , detection limit , biochemistry , receptor , catalysis
A novel polydiacetylene‐linked ligand derived from the reaction between chelidamic acid and bis(pyridin‐2‐ylmethyl)amine (PDA‐CB) showed excellent selectivity and sensitivity for Cd 2+ ions compared with other metal ions, including Zn 2+ . An obvious color change between PDA‐CB and PDA‐CB + Cd 2+ is clearly visible to the naked eye. The Cd 2+ ‐responsive color change of PDA‐CB is attributed to the coordination between Cd 2+ and CB ligand units and has been characterized by 1 H NMR titration.