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Merck
  • Enhanced luminescence of phenyl-phenanthridine dye on aggregated small silver nanoparticles.

Enhanced luminescence of phenyl-phenanthridine dye on aggregated small silver nanoparticles.

The journal of physical chemistry. B (2006-07-21)
Jian Zhang, Joseph R Lakowicz
摘要

Tiopronin-coated silver particles (average diameters of core = 1.6 nm) were prepared by a modified Brust method, and the ligands on the metal core were partially displaced by (2-mercapto-propionylamino) acetic acid-2,5-dioxo-pyrrolidin-1-ylester through ligand exchanges. The particles were bound on amine-pendent polymer backbones by condensation to generate compact aggregates of particles. The aggregated particles displayed a plasmon absorbance rising at 440 nm. Luminescence was enhanced to about 2 times with increasing the plasmon rising by the particle aggregation upon excitation at 400 nm when the polymer was labeled by 3,8-diamino-6-phenyl-phenanthridine.

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菲啶, 98%