2007-049 – Surface Grafted Conjugated Polymers


Water-soluble conjugated polyelectrolytes (CPEs) based on poly(phenylene vinylene) (PPV) or poly(phenylene ethynylene) (PPE) backbones exhibit useful properties such as strong photoluminescence and rapid transport of the singlet exciton along the conjugated backbone. Significant attention has been focused on grafting of a CPE to a surface, which would allow the development of applications to polymetric systems. Although conjugated polymer coated silica particles and composites are known, a general method for preparation of silica particles that are surface-grafted with a conjugated polymer is not available.

Technology Description
Researchers at the University of New Mexico and University of Florida have invented a method to prepare and composite conjugated polymers grafted to surfaces and their use as biosensors and biocides. The invention is directed to a surface grafted CPE, where a solid substrate has at least one CPE attached to the substrate’s surface by a coupling moiety that forms an ionic or, preferably a covalent bond to the surface and a covalent bond to the CPE. The substrate can be a nanoparticle or microparticle and the CPE can be any polymer with a conjugated backbone that contains some ionic side groups to promote an affinity with water.


  • Biocidal active agents
  • Control over surface density of polymer layer
  • Substrate may be a nanoparticle or microparticle
  • Surface grafted CPEs can be deposited on a fabric or other surface
  • CPE functionalized surface can destroy a biological agent or a variety of biological agents

Potential Applications

  • Fluorescence Sensing
  • Biosensing
  • Antimicrobials
  • Biocides
  • Disinfectant

Contact Information

Name: Gregg Banninger

Email: GBanninger@innovations.unm.edu

Phone: 505-272-7908