Condensation 1 Condensation reactions 1 Copper 1 Diethylenetriamine 1 Ethane Fluorescence 1 Fluorescence sensing 1 Fluorescent chemosensor 1 Fluorescent chemosensors 1 High sensitivity 1 Iron compounds 1 Manganese 1 Metal ions 1 Metals 1 Physiology 1 Polyols 1 Practical systems 1 Pyridine 1 Real water samples 1 Solutions 1 Synthesis (chemical) 1 Theoretical values 1 Zinc 1