N,N'-Bis(Salisiliden)-1,3-Propandiamin Schiff Bazının Agregasyon Kaynaklı Emisyon Artışı

Abstract

Bu çalışmada, N,N'-bis(salisiliden)-1,3-propandiamin Schiff bazından hazırlanan çözeltilerin agregasyon kaynaklı emisyon artış özelliği incelenmiştir. Ligandın iki farklı çözücü ile farklı konsantrasyonlarda çözeltileri hazırlanmış ve bu çözeltilere değişik yüzdelerde (%1-50) su eklenmiştir. Schiff bazının etanol ile hazırlanmış 2×10-4 M’lık çözeltisinde, su derişimi arttıkça emisyon dalgaboyunun kırmızıya kaydığı ve floresans şiddetinin arttığı görülmüştür. Ayrıca, bu çözeltilerin floresans özelliklerinin zamana bağlı olarak değişimi incelenmiştir. Yapılan çalışmalar sonucunda, Schiff bazının, etanol içindeki su safsızlığının kalitatif ve kantitatif olarak belirlenmesinde kullanılabileceği öne sürülmüştür.

Keywords

• Schiff bazı
• Agregasyon kaynaklı emisyon
• Floresans

Aggregation-Induced Emission Enhancement of N,N′-bis (Salicylidene)-1,3-Propanediamine Schiff Base

Abstract

In this study, aggregation-induced emission enhancement feature of the solutions prepared from N,N'-bis (salicylidene) -1,3-propanediamine Schiff base was investigated. The ligand solution were prepared at different concentrations with two different solvents and water was added to these solutions at varying percentages (1-50%). It was observed that emission wavelength was red-shifted and the fluorescence intensity was enhanced, as the concentration of water increased in 2×10-4 M ethanolic solution of Schiff base. In addition, time-dependent changes in the fluorescence properties of these solutions were investigated. As a result, it has been suggested that Schiff base can be used for qualitative and quantitative determination of water impurity in ethanol. 

Keywords

• Schiff base
• Aggregation-induced emission
• Fluorescence

References

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