Condensation 2 Copper 2 Diethylenetriamine Fluorescence 2 Iron compounds 2 Manganese 2 Metal ions 2 Metals 2 Solutions 2 Benzoyl thiourea derivatives 1 Carbonyl groups 1 Chelation 1 Chemical detection 1 Condensation reactions 1 Emission spectroscopy 1 Ethane 1 Fluorescence sensing 1 Fluorescent chemosensor 1 Fluorescent chemosensors 1 Fluorescent emission spectroscopy 1 Fluorescent sensors 1 High sensitivity 1 Ligands 1 Metal complexes 1 Nuclear magnetic resonance 1 Nuclear magnetic resonance spectroscopy 1 Physiology 1 Polyols 1 Practical systems 1 Proton nuclear magnetic resonance 1