Nanoscience

Mussel-Inspired Surface Coating to Stabilize and Functionalize Supramolecular J-Aggregate Nanotubes Composed of Amphiphilic Cyanine Dyes

Authors

  • Yipeng Zhang Chinese University of Hong Kong, Shenzhen ,
  • He Lou Chinese University of Hong Kong, Shenzhen ,
  • Wei Zhang Chinese University of Hong Kong, Shenzhen ,
  • Mingfeng Wang Chinese University of Hong Kong, Shenzhen

Abstract

We report a mussel-inspired strategy of polydopamine coating to stabilize and functionalize J-aggregate nanotubes formed by supramolecular self-assembly of an amphiphilic cyanine dye called C8S3 in aqueous media. Optimization of the coating condition by changing the incubation time in a slightly basic media of dopamine with different concentrations leads to conformal wrapping of the polydopamine layer with controllable thickness on the surface of the nanotubes. Compared to noncoated pristine C8S3 nanotubes, these polydopamine-coated nanotubes show enhanced stability against dilution, heating and photobleaching. Moreover, the polydopamine layer wrapping around the nanotubes serve as an adhesive for adsorption of a variety of metal ions and electroless deposition of the metal nanoparticles. Such stabilized and functionalized nanotube composites may offer a robust synthetic J-aggregate system to mimic the structure and function of light-harvesting complexes and reaction centers in photosynthetic systems.

Version notes

Figures 2-3 were added in the new version of the manuscript.

Content

Thumbnail image of C8S3 NTs_v66_20220505.pdf

Supplementary material

Thumbnail image of Supporting information-Mussel-Inspired Surface Coating to Stabilize and Functionalize Supramolecular J-Aggregate Nanotubes Composed of Amphiphilic Cyanine Dyes.docx
Supporting information of Mussel-Inspired Surface Coating to Stabilize and Functionalize Supramolecular J-Aggregate Nanotubes Composed of Amphiphilic Cyanine Dyes
Additional experimental details, materials and methods, digital photographs, UV–vis spectra, TEM images.