Poly(L-Lysine)-pyranine-3 coacervate mediated nanoparticle-assembly: fabrication of dynamic pH-responsive containers.

Poly(L-Lysine)-pyranine-3 coacervate mediated nanoparticle-assembly: fabrication of dynamic pH-responsive containers.

Chemical communications (Cambridge, England) (2011-11-30)

Arlin Jose Amali, Shashi Singh, Nandini Rangaraj, Digambara Patra, Rohit Kumar Rana

ABSTRACT

Counter-ion condensation of Poly(L-Lysine) in the presence of pyranine-3 generates spherical coacervates, which then template the assembly of silica nanoparticles to form microcapsule structures that dynamically control the optical ratiometric sensing of both the change in pH and release of the probe molecule.

MATERIALS

Product Number

Brand

Product Description

P6516

Sigma-Aldrich

Poly-L-lysine hydrobromide, mol wt 4,000-15,000 by viscosity

P2636

Sigma-Aldrich

Poly-L-lysine hydrobromide, mol wt 30,000-70,000

P7890

Sigma-Aldrich

Poly-L-lysine hydrobromide, mol wt 15,000-30,000 by viscosity

P2658

Sigma-Aldrich

Poly-L-lysine hydrochloride, mol wt 15,000-30,000

P9404

Sigma-Aldrich

Poly-L-lysine hydrochloride, mol wt >30,000