Kang, Juhye Kang, Hee Kyung Kim, Hyun Lee, Jungha Song, Eun Joo Jeong, Kwang-Duk Kim, Cheal Kim, Jinheung 2024-01-20T13:01:53Z 2024-01-20T13:01:53Z 2021-09-01 2013-02-01 1061-0278 https://pubs.kist.re.kr/handle/201004/128364 In this study, an assay to quantify the presence of magnesium ions with a chemosensor of bispicolylamine covalently attached to coumarin as a fluorephore was developed using a ratiometric fluorescence enhancement approach. Upon treatment with magnesium ions, the fluorescence wavelength of the chemosensor at 367 nm was shifted to 413 nm and the intensity was also enhanced. The formation of a 1:2 complex between the chemosensor and magnesium ions was confirmed based on the spectral changes of UVvis, fluorescence and NMR as well as Job's plot. An appreciable enhancement in the luminescence intensity for the emission band at 413 nm was evident when magnesium ions were added progressively. The maximum wavelength and intensity of the emission of the complex with Mg2+ were discriminated from those of other metal ions, such as Ca2+ and Zn2+. English TAYLOR & FRANCIS LTD MG2+ PROBE SENSORS DESIGN Fluorescent chemosensor based on bispicolylamine for selective detection of magnesium ions Article 10.1080/10610278.2012.752087 1 SUPRAMOLECULAR CHEMISTRY, v.25, no.2, pp.65 - 68 SUPRAMOLECULAR CHEMISTRY 25 2 65 68 scie scopus 000313779000003 2-s2.0-84873279688 Chemistry, Multidisciplinary Chemistry Article MG2+ PROBE SENSORS DESIGN fluorescent chemosensor bispicolylamine ratiometric magnesium ion coumarin