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Area of Science:

  • Biomedical Engineering
  • Materials Science
  • Polymer Chemistry

Background:

  • Degenerative diseases and cancers necessitate advanced biomedical treatments.
  • There is a growing need for biomaterials with theranostic (diagnostic and therapeutic) capabilities.
  • Current theranostic materials often involve complex designs.

Purpose of the Study:

  • To develop a multifunctional, citrate-based biomaterial platform with minimal design complexity.
  • To create a material with versatile imaging and therapeutic functionalities.
  • To explore applications in disease detection and treatment.

Main Methods:

  • A facile, one-pot synthesis was used to create aniline tetramer doped biodegradable photoluminescent polymers (BPLPATs).
  • Characterization of degradation profiles, mechanical strengths, and optoelectronic properties.
  • Evaluation of BPLPAT nanoparticles for cell labeling, fluorescence imaging, and photoacoustic (PA) imaging.
  • Assessment of photothermal performance for thermal therapy and scaffold applications in nerve cell growth.

Main Results:

  • BPLPATs exhibit programmable degradation (<1 to >6 months) and tunable mechanical strengths (~20 MPa to >400 MPa).
  • The material possesses intrinsic fluorescence, photoacoustic (PA) and electrical conductivity.
  • BPLPAT nanoparticles enabled cell labeling and deep tissue PA imaging.
  • Demonstrated potential for cancer thermal treatment and 3D high-spatial-resolution deep tissue PA imaging (23 mm).
  • BPLPAT scaffolds promoted nerve cell growth and differentiation.

Conclusions:

  • The developed citrate-based biomaterial platform offers a versatile solution for theranostic applications.
  • BPLPATs provide dual-imaging capabilities (fluorescence and PA) and therapeutic potential (photothermal).
  • This biodegradable, electroactive platform opens new avenues for biomedical and biological applications.