Synthesis, Spectral Characteristics, Sensing Properties and Microbiological Activity of New Water-Soluble 4-Sulfo-1,8-naphthalimides

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creativework.keywords4-sulfo-1,8-naphthalimides, dendrimer, metal ions, pH, solvatochromism
creativework.publisherMultidisciplinary Digital Publishing Institute (MDPI)en
dc.contributor.authorSaid A.I.
dc.contributor.authorStaneva D.
dc.contributor.authorVasileva-Tonkova E.
dc.contributor.authorGrozdanov P.
dc.contributor.authorNikolova I.
dc.contributor.authorStoyanova R.
dc.contributor.authorJordanova A.
dc.contributor.authorGrabchev I.
dc.date.accessioned2024-07-10T14:27:06Z
dc.date.accessioned2024-07-10T14:51:33Z
dc.date.available2024-07-10T14:27:06Z
dc.date.available2024-07-10T14:51:33Z
dc.date.issued2024-05-01
dc.description.abstractA new water-soluble polyamidoamine (PAMAM) dendrimer modified with 4-sulfo-1,8-naphthalimide (DSNI) and its monomeric structural analogue (MSDI) were synthesized. Their photophysical properties were investigated in organic solvents of different polarities and aqueous solutions. The effect of pH on fluorescence intensity was determined. It was found that the dendrimer emits blue fluorescence in an acidic medium, which is quenched in an alkaline environment. This phenomenon is due to the possibility of suppression of nonradiative photoinduced electron transfer in acidic media. The influence of different metal ions (Cu2+, Pb2+, Sn2+, Sr2+, Mg2+, Ba2+, Co2+, Hg2+, Zn2+, Ni2+, Fe3+, Al3+) and anions (CN−, S2−, S2O52−, HPO42−, H2PO4−, F−, CH3COO−, NO2−, CO32−, SO42−) on the intensity of the emitted fluorescence was studied. Quenching was only found in the presence of Cu2+. This makes the dendrimer suitable for determining copper ions in water solutions in the presence of other metal ions and anions. Additionally, DSNI was used as a ligand to obtain a stable copper complex, the structure of which was investigated by electron paramagnetic resonance (EPR), infrared spectrum, and elemental analysis. Two copper ions were found to form a complex with one dendrimer. The in vitro microbiological activity of the new compounds against bacteria Pseudomonas aeruginosa and two viruses HRSV-2 and HAdV-5 was investigated. With a view to obtaining antibacterial and anti-viral textiles, cotton fabrics were treated with the three compounds, and then their activity against the same microbial strains was investigated. It was found that the microbiological activity was preserved after the application of the new compounds to the cotton fabrics.
dc.identifier.doi10.3390/chemosensors12050079
dc.identifier.issn2227-9040
dc.identifier.scopusSCOPUS_ID:85193956740en
dc.identifier.urihttps://rlib.uctm.edu/handle/123456789/954
dc.language.isoen
dc.source.urihttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85193956740&origin=inward
dc.titleSynthesis, Spectral Characteristics, Sensing Properties and Microbiological Activity of New Water-Soluble 4-Sulfo-1,8-naphthalimides
dc.typeArticle
oaire.citation.issue5
oaire.citation.volume12
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