Yeni Floresans Özellikli Çapraz Bağlı Polifosfazen Mikrokürelerin Sentezi ve Karakterizasyonu

Year 2020, Volume: 20 Issue: 3, 418 - 425, 30.06.2020

Simge Metinoğlu Örüm

https://doi.org/10.35414/akufemubid.701698

Abstract

Siklomatriks yapılı net-poli(siklotetrafosfazen-ko-tiramin) mikroküreler çöktürme polimerizasyonu ile tek adımda sentezlenmiştir. Elde dilen mikrokürelerin karakterizasyonu SEM, EDX, FTIR, XRD ve DLS teknikleri ile yapılmıştır. Ayrıca mikrokürelerin UV ve floresans özellikleri de incelenmiş olup, mikrokürelerin 239 nm’de maksimum absorbans yaptığı belirlenmiştir. Tiramin ve mikrokürelerin katı hal floresans özellikleri, 254 nm dalga boyunda uyarılarak incelenmiştir. Tiramin çok zayıf emisyon yaparken, mikroküreler 308 nm’de şiddetli emisyon göstermiştir. Elde edilen sonuçlar, sentezlenen polifosfazen mikrokürelerin sensör, biyolojik kataliz ve görüntüleme gibi floresans uygulamalar için yüksek potansiyele sahip olduğunu göstermektedir.

Keywords

Tiramin, Mikroküre, Çöktürme polimerizasyonu, Polifosfazen, Floresans

Synthesis and Characterization of Novel Fluorescent Cross-Linked Polyphosphazene Microspheres

Abstract

Cyclomatrix structured net-poly(cyclotetraphosphazene-co-tyramine) microspheres were synthesized by single step precipitation polymerization. The characterization of obtained microspheres were performed by SEM, EDX, FTIR, XRD and DLS techniques. Besides, UV and fluorescence properties of microspheres were researched and it was determined that microspheres have been shown maximum absorption at 239 nm. It was investigated the fluorescence characteristics of tyramine and microspheres as solid state, using 254 nm as the excitation wavelength. The microspheres showed a strong emission peak at 308 nm, whereas the emission peak of the tyramine was very weak. The obtained results show that the synthesized polyphosphazene microspheres have a high potential for fluorescent sensor, biological catalysis and imaging applications etc. 

Keywords

Tyramine, Microsphere, Precipitation polymerization, Polyphosphazene, Fluorescence

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