Chemotaxis of Molecular Dyes in Polymer Gradients in Solution

Rajarshi Guha, Farzad Mohajerani, Matthew Collins, Subhadip Ghosh, Ayusman Sen, Darrell Velegol

Research output: Contribution to journalArticlepeer-review

23 Scopus citations


Chemotaxis provides a mechanism for directing the transport of molecules along chemical gradients. Here, we show the chemotactic migration of dye molecules in response to the gradients of several different neutral polymers. The magnitude of chemotactic response depends on the structure of the monomer, polymer molecular weight and concentration, and the nature of the solvent. The mechanism involves cross-diffusion up the polymer gradient, driven by favorable dye-polymer interaction. Modeling allows us to quantitatively evaluate the strength of the interaction and the effect of the various parameters that govern chemotaxis.

Original languageEnglish (US)
Pages (from-to)15588-15591
Number of pages4
JournalJournal of the American Chemical Society
Issue number44
StatePublished - Nov 8 2017

All Science Journal Classification (ASJC) codes

  • Catalysis
  • General Chemistry
  • Biochemistry
  • Colloid and Surface Chemistry


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