A single thiourea-appended 1,8-naphthalimide chemosensor for three heavy metal ions: Fe3+, Pb2+, and Hg2+

A New Thiourea Compound as Potential Ionophore for Metal Ion Sensor

“…One of heavy metals from industrial waste was mercury [8]. They are not biodegradable and it is harmful to human body organs [9]. It can cause cancer, brain damage and also motion disorder because it can pass through biological membranes [10].…”

Application of P-Dimethylaminobenzaldehyde Benzoylthiourea as a Colorimetric Chemosensor for Detection of Cu2+ in Aqueous Solution

“…Compund with thiourea derivatives has gained considerable interest for the development of selective and sensitive sensors for toxic metal ions due to their main role in biological activities [2]- [4] and also found as chemosensors [5]- [7]. The receptors containing amide, urea, imine and thiourea groups act as cation sensors [8]- [10].…”

“…4-Dimethylaminobenzaldehyde is widely used as fluorescent probe in chemosensors. It can modulate UVvis absorption [7].…”

Synthesis and properties of three novel rhodamine-based fluorescent sensors for Hg2+

“…A large number of 1,8-naphthalimide [5][6][7], rhodamine [8][9][10][11][12], BODIPY [13][14][15], coumarin [16,17], and dansyl-based [18,19] Hg 2+ fluorescent sensors have been reported. However, some of them could only respond to Hg 2+ in organic media [9,11,13], others suffered from poor sensing properties including selectivity, sensitivity, interference immunity and practicability [8,12,20].…”