Development of a microchip metal ion sensor using dinitro-azocalix[4] azacrown

Jong Min Park; Ok Jae Shon; Hyuck Gi Hong; Jong Seung Kim; Yangsun Kim; H. B. Lim

doi:10.1016/j.microc.2004.07.017

Development of a microchip metal ion sensor using dinitro-azocalix[4] azacrown

Jong Min Park, Ok Jae Shon, Hyuck Gi Hong, Jong Seung Kim, Yangsun Kim, H. B. Lim

Research output: Contribution to journal › Article › peer-review

5 Citations (Scopus)

Abstract

A microchip metal ion sensor based on absorption of a novel 1,3-alternate calix[4]azacrown having a dinitro-azo-chromophoric pendent group, which was synthesized in this group, was manufactured and its performance was discussed. The microchip optical sensor was composed of light emitting diode (LED, 516.6 nm peak max.) as a light source, photodiode detector, and polydimethyl siloxane (PDMS) microchannel copied from a master of Si wafer. It turns out that dinitro-azocalix[4]azacrown (DAC) can make a complex with various metal ions, such as Na⁺, Ca²⁺, Cu²⁺, and Fe²⁺, based on the fundamental study of spectrochemical properties for optical sensing. The absorption signal was stable and dependent upon concentration of metal ions. Limit of detection for Na⁺ was obtained to be 78.4 ng/mL with relative standard deviation of 2.24%.

Original language	English
Pages (from-to)	139-144
Number of pages	6
Journal	Microchemical Journal
Volume	80
Issue number	2
DOIs	https://doi.org/10.1016/j.microc.2004.07.017
Publication status	Published - 2005 Jun
Externally published	Yes

Keywords

DAC
Metal ions
Microchip

ASJC Scopus subject areas

Analytical Chemistry
Spectroscopy

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title = "Development of a microchip metal ion sensor using dinitro-azocalix[4] azacrown",

abstract = "A microchip metal ion sensor based on absorption of a novel 1,3-alternate calix[4]azacrown having a dinitro-azo-chromophoric pendent group, which was synthesized in this group, was manufactured and its performance was discussed. The microchip optical sensor was composed of light emitting diode (LED, 516.6 nm peak max.) as a light source, photodiode detector, and polydimethyl siloxane (PDMS) microchannel copied from a master of Si wafer. It turns out that dinitro-azocalix[4]azacrown (DAC) can make a complex with various metal ions, such as Na+, Ca2+, Cu2+, and Fe2+, based on the fundamental study of spectrochemical properties for optical sensing. The absorption signal was stable and dependent upon concentration of metal ions. Limit of detection for Na+ was obtained to be 78.4 ng/mL with relative standard deviation of 2.24%.",

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AU - Shon, Ok Jae

AU - Hong, Hyuck Gi

AU - Kim, Jong Seung

AU - Kim, Yangsun

AU - Lim, H. B.

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