Fluorescent poly(methacryloxy quinolin) microparticles allowing simultaneous gold detection with additive-free photocatalytic synthesis of raspberry-like gold nanoparticles and gold nanoparticle decorated microparticles


DİKMEN Z. , Javanifar R., BÜTÜN V.

EUROPEAN POLYMER JOURNAL, cilt.129, 2020 (SCI İndekslerine Giren Dergi) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 129
  • Basım Tarihi: 2020
  • Doi Numarası: 10.1016/j.eurpolymj.2020.109623
  • Dergi Adı: EUROPEAN POLYMER JOURNAL

Özet

Novel, fluorescent polymer particles based on poly(8-methacryloxy quinoline) (PMAQ) have been synthesized via suspension and mini-suspension polymerization with a diameter between 400 nm and 4 mu m. Usage of sodium dodecyl sulfate (SDS) co-stabilizer causes formation of smaller microparticles with rough surfaces. Easy, one step and additive free synthesis of gold nanoparticles (AuNPs) is firstly achieved by using these new fluorescent microparticles as electron donor material and stabilizer. It is observed that the surfaces of the microparticles is successfully covered by a self-assembled layer of AuNPs. An evolution for different stages of AuNPs formation on PMAQ microparticles or colloidal raspberry-like AuNPs is offered. Raspberry-like AuNPs consist of hundereds of smaller AuNPs that result in higher surface area. Hovewer, Au nanocrystals on PMAQ are obtained in the last stage of evolution. Gold existense is also detected simultaneously due to its fluorescence quenching property during interaction with microparticles. Moreover UV-light assisted AuNPs synthesis on the PMAQ microparticles is achived in a quite short time. The Au content of the AuNP-polymer hybrid particles is determined to be 12 wt% with ICP-MS studies. These unique particles are promising candidates for various applications such as in catalysis, biosensor technology, biomedical applications, and easily prepared SERS substrates.