A 4-(1H-Benzo[d]oxazole-2-yl)-2-methoxyphenol as Dual Selective Sensor for Cyanide Ion Detection

R. Rahmawati1,2,*, B. Purwono2 and S. Hadisaputra1

1Study Program of Chemistry, Department of Education of Mathematics and Natural Sciences, University of Mataram, Jalan Majapahit 62, Mataram, Indonesia

2Department of Chemistry, Universitas Gadjah Mada, Jalan Kaliurang Sekip Utara Bulaksumur 21, Yogyakarta, Indonesia

*Corresponding author: E-mail: rahmawati_kimia@unram.ac.id; tqomari31@gmail.com


A dual sensor based on benzoxazole containing moiety S3 was successfully synthesized and applied for detection of CN ion. The S3 molecule changed its colour for dark brown to dark green on addition of the CN ion only in DMSO solvent. The limit of detection (LOD) and association constant (Kass) values was 0.4 × 10−6 M and 1.0 × 107 M−1; and 0.46 × 10−4 M and 1.0 × 105 M−1 determined by UV-visible spectroscopic titration and fluorescence titration, respectively.


Dual selective sensor, Benzoxazole, Cyanide ion.

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