A new colorimetric and fluorimetric sensor for metal cations based on poly(propilene amine) dendrimer modified with 1,8-naphthalimide |
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| Authors: | Ivo Grabchev Paula Bosch Mark McKenna D Staneva |
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| Institution: | 1. Institute of Polymers, Bulgarian Academy of Sciences, Akad. G. Bonchev 103 A., 1113 Sofia, Bulgaria;2. Institute of Science and Technology of Polymers, CSIC, Juan de la Cierva 3, 28006 Madrid, Spain;3. Institute of Organic Chemistry with Centre of Phytochemistry Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria |
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| Abstract: | A new fluorescent first generation poly(propylene amine) dendrimer (PPI), peripherally modified with 4(butylamino-substituted-1,8-naphthalimide), has been synthesized and characterized. Its photophysical characteristics in organic solvents of different polarities were studied, and the influence of sodium hydroxide on its spectral characteristics in N,N-dimethylformamide is discussed. The complexes formed between the dendrimer and metal cations in solution have been studied with regard to the potential applications of the new dendrimer as a colorimetric and fluorescent sensor for metal ions. The fluorescence intensity of the dendrimer in the presence of metal cations (Zn2+, Co2+, Pb2+, Mn2+, Cu2+ and Fe3+) increases substantially revealing its sensor potential. |
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