Photo- and pH-Responsive Hybrid Colloidal Particles

Mutlutürk E., TAMER U., Caykara T.

ChemistrySelect, cilt.8, sa.6, 2023 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 8 Sayı: 6
  • Basım Tarihi: 2023
  • Doi Numarası: 10.1002/slct.202204497
  • Dergi Adı: ChemistrySelect
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier
  • Anahtar Kelimeler: colloidal particles, photochromic materials, RAFT polymerization, spiropyran
  • Gazi Üniversitesi Adresli: Evet

Özet

© 2023 Wiley-VCH GmbH.Materials that respond to environmental changes in a predictable manner are called “smart”. Here, smart dual-responsive hybrid colloidal particles were prepared using the interface-mediated reversible addition–fragmentation chain-transfer (RAFT) polymerization method. The structure and morphology of the prepared poly(methacrylated-spiropyran) (p(MMASP)) colloids were characterized by FTIR, 1H-NMR and GPC spectroscopies, and SEM. The molecular weight and polydispersity were determined as 7877 g mol−1 and 1.16, respectively. Heterocyclic ring cleavage of the spiropyran (SP) pendant group enables the pH- and light-responsive behavior with a reversible conversion between the hydrophobic and hydrophilic states. The isomerization from SP to merocyanine (MC) form proceeds in 7 min, while the reverse action takes 9 min. The pronounced photochromic effect and high fatigue resistance make these colloids suitable for smart applications.