Double fluorescence assay via a beta-cyclodextrin containing conjugated polymer as a biomimetic material for cocaine sensing

Arslan M., Sengel T. Y., Guler E., GÜMÜŞ Z. P., ALDEMİR E., Akbulut H., ...More

POLYMER CHEMISTRY, vol.8, no.21, pp.3333-3340, 2017 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 8 Issue: 21
  • Publication Date: 2017
  • Doi Number: 10.1039/c7py00420f
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.3333-3340
  • Istanbul Technical University Affiliated: Yes


A double fluorescence mu-well assay that exploits a novel conjugated polymer containing cyclodextrin (CD) as the key component is reported. For the construction of the cocaine bioassay, poly(p-phenylene) with CD units in the main-chain and poly(ethylene glycol) side chains (PPP-CD-g-PEG) was first prepared by Suzuki coupling polymerization and coated on each well as a biomimetic material. Although the poly-phenylene backbone is responsible for the fluorescence properties without an additional fluorophore, PEG and CD provide water solubility and selective complexation with cocaine, respectively. A cocaine antibody was used as a secondary recognition compound after labelling with quantum dots (QDs). Most notably, we show that the two-color fluorescence nature of the assay facilitates double measurement from the same sample and the described strategy can be adapted to various sensing systems.