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  • Laser Applications to Chemical and Environmental Analysis
  • Technical Digest (Optica Publishing Group, 2004),
  • paper TuF10

Bio-organic nanoprobes for tumor detection

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Abstract

A novel class of biocompatible, pH responsive bio-polymers is reported. Their functionality derives from multiple hydrophobic and hydrophilic groups along a flexible polymer backbone, which incorporates cy-3 and cy-5 dye monomers. Below a critical pH the polymer collapses (“hypercoils”) into a compact globular structure bringing the dye molecules into close proximity with one another. This results in a large increase in fluorescence resonance energy transfer (FRET) efficiency upon excitation of the cy-3 fluorophores in the molecule. Conformational and spectral properties of this novel class of fluorescent reporter molecules are discussed, as well as potential applications.

© 2004 Optical Society of America

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