Synthesis of a new triphenylamine dithiosemicarbazone derivative and investigation of its spectroscopic properties toward metal ions.

Year 2022, , 368 - 380, 15.06.2022

Sait Malkondu , Serkan Erdemir , Serkan Eymur , Seydahmet Çay

https://doi.org/10.31466/kfbd.1073347

Abstract

In the present study, a new triphenylamine dithiosemicarbazone derivative (TFASC), which is designed as chromogenic and fluorogenic receptor, works in “on-off” system, and includes triphenylamine as signal unit and thiosemicarbazone groups as a metal ion probing unit has been synthesized. The ability of the prepared receptor to detect metal ions has been evaluated by the changes in its absorption and emission intensity. The receptor demonstrates high selectivity and sensitivity for Hg2+, which is highly harmful to the human health and the environment, among the seventeen metal ions in a mixture of acetonitrile:water (9:1). Electron transfer from Hg2+ ion to the fluorophore has been occurred upon the receptor and Hg2+ interacts under excitation, followed by decreasing the emission intensity of fluorophore significantly. The results show that the synthesized receptor can be used as chromogenic and fluorogenic sensory molecule for the determination and detection of Hg2+ ions.

Keywords

Triphenylamine, Spectroscopy, Fluorometry, Mercury, Detection

Yeni bir trifenilamin ditiyosemikarbazon türevinin sentezi ve metal iyonlarına karşı spektroskopik özelliklerinin incelenmesi

Abstract

Bu çalışmada, sinyal birimi olarak trifenilamin, metal iyon algılama birimi olarak tiyosemikarbazon birimleri içeren, “açık-kapalı” şeklinde çalışan, kromojenik ve fluorojenik algılayıcı olarak tasarlanan yeni bir trifenilamin ditiyosemikarbazon (TFASC) türevi sentezlenmiştir. Hazırlanan algılayıcının metal iyonlarını tayin edebilme yeteneği absorbsiyon ve emisyon şiddetindeki değişimler aracılığıyla incelenmiştir. Algılayıcının asetonitril:su (9:1) ortamında 17 metal iyonu arasından, insan sağlığı ve çevreye oldukça zararlı olan Hg2+ iyonuna karşı yüksek seçicilik ve hassasiyet gösterdiği belirlenmiştir. Algılayıcı ve Hg2+ etkileştiğinde, Hg2+ iyonundan fluorofor birimine elektron aktarımı sonucunda, algılayıcının emisyon şiddetinde önemli bir düşüş olmuştur. Elde edilen sonuçlar sentezlenen algılayıcının Hg2+ iyonunun belirlenmesinde ve tayininde kromojenik ve fluorojenik bir algılayıcı molekül olarak kullanılabileceği göstermektedir. 

Keywords

Trifenilamin, Spektroskopi, Fluorometri, Cıva, Tayin

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