Synthesis of NIR Responsive NGQDs-Fe3O4@PPy Nanocomposite and Investigation of Its Photothermal Performance

Öz

In this work, magnetic nitrogen doped graphene quantum dots iron oxide-polypyrrole (NGQDs-Fe3O4@PPy) ternary nanocomposite having perfect photothermal activity was synthesized. The chemical structure and morphological of the synthesized nanocomposites were characterized by ultraviolet-visible (UV-Vis) spectroscopy, Fourier transform infrared (FTIR), X-ray diffraction spectroscopy (XRD), high-resolution transmission electron microscopy (HRTEM), X-ray photoelectron spectroscopy (XPS). Photothermal properties of the synthesized nanocomposites were examined at different laser power densities (1.5 - 2.5 W/cm2) in the near infrared (NIR) region (808 nm) using aqueous solutions of different concentrations (0.025 - 0.1 mg / mL). The maximum temperature (Tmax) of NGQDs-Fe3O4@PPy composite reached up to 54.3°C and 83.1°C under irradiation of the 808 nm NIR laser at 1.5 and 2.5 W/cm2 power density for 10 min at 0.1 mg/ml concentration. The synthesized NGQDs-Fe3O4@PPy triple nanocomposite with high photothermal performance and photothermal stability is thought to have an important potential for photothermal treatment applications.

Anahtar Kelimeler

• Nitrogen doped graphene quantum dots
• polypyrrole
• nanocomposite
• photothermal treatment

Proje Numarası

Proje No: 117M232

NIR Duyarlı NGKN-Fe3O4@PPy Nanokompozitinin Sentezi ve Fototermal Performansının İncelenmesi

Öz

Bu çalışmada, yüksek fototermal aktiviteye sahip azot katkılı grafen kuantum nokta-demir oksit-polipirol (NGKN-Fe3O4@PPy) üçlü nanokompoziti sentezlenmiştir. UV-görünür bölge spektroskopisi (UV-vis), Fourier dönüşümlü kızıl ötesi spektroskopisi (FTIR), X-ışını kırınım yöntemi (XRD), yüksek çözünürlüklü geçirimli elektron mikroskobu (HRTEM), X-Ray fotoelektron spektroskopisi (XPS) ile sentezlenen yapıların morfolojik ve kimyasal yapıları karakterize edilmiştir. Ayrıca fototermal özelikleri farklı derişimlerdeki (0,025 – 0,1 mg/mL) sulu çözeltileri kullanılarak yakın kızılötesi (NIR) bölgesinde (808 nm) farklı lazer güç yoğunluklarında (1,5 – 2,5 W/cm2) incelenmiştir. 808 nm NIR lazer ile 10 dk uyarım sonucunda 0,1 mg/ml derişimli NGKN-Fe3O4@PPy kompozitinin maksimum sıcaklığının 1,5 ve 2,5 W/cm2 güç yoğunluklarında sırasıyla 54,3°C ve 83,1°C’ye ulaştığı saptanmıştır. Sergilediği yüksek fototermal performans ve fototermal kararlılık sayesinde sentezlenen NGKN-Fe3O4@PPy üçlü nanokompozitinin fototermal tedavi uygulamaları için önemli bir potansiyele sahip olduğu düşünülmektedir.

Anahtar Kelimeler

• Azot katkılı grafen kuantum nokta
• polipirol
• nanokompozit
• fototermal tedavi

Destekleyen Kurum

TÜBİTAK

Proje Numarası

Proje No: 117M232

Teşekkür

Bu çalışma, Türkiye Bilimsel ve Teknolojik Araştırma Kurumu (TÜBİTAK; Proje No: 117M232) tarafından desteklenmiştir.

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