Please use this identifier to cite or link to this item: https://scholarbank.nus.edu.sg/handle/10635/119371
Title: PHOTOLUMINESCENCE OF NOBLE METAL NANOPARTICLES AND APPLICATIONS IN BIO-IMAGING
Authors: GAO NENGYUE
Keywords: Noble metal nanoparticles, surface plasmon resonance, photoluminescence, single particle microscopy, bio-imaging
Issue Date: 21-Aug-2014
Citation: GAO NENGYUE (2014-08-21). PHOTOLUMINESCENCE OF NOBLE METAL NANOPARTICLES AND APPLICATIONS IN BIO-IMAGING. ScholarBank@NUS Repository.
Abstract: BY EMPLOYING SINGLE PARTICLE MICROSCOPY, OPTICAL PROPERTIES OF NOBLE METAL NANOPARTICLES WERE EXPLORED IN THIS THESIS, INCLUDING SCATTERING, TWO-PHOTON PHOTOLUMINESCENCE (TPPL) AND THEIR APPLICATION IN BIO-IMAGING. IN FIRST PROJECT, COMPARISONS ON THE TPPL WERE MADE AMONG AU, AG AND AU/AG NANOPARTICLES. AU/AG NANOPARTICLES WERE FOUND TO HAVE THE HIGHEST TPPL INTENSITY, GOOD CELL-IMAGING PERFORMANCE AND LOW CYTOTOXICITY. IN SECOND PROJECT, TPPL INTENSITY OF VARIOUS SHAPES OF AU NANOPARTICLES WERE FOUND TO INCREASE IN THE ORDER OF SPHERE, CUBE, TRIANGLE, ROD, AND BRANCH. LASER-INDUCED MELTING EXPERIMENTS ON SINGLE AU NANOBRANCHES DEMONSTRATE THAT TIPS PLAYED AN IMPORTANT ROLE IN STRONG TPPL. IN THE THIRD PROJECT, PHOTOLUMINESCENCE MECHANISM WAS INVESTIGATED. IN CONTRAST TO REPORTED RESULTS, TPPL PEAK IS LOCATED BETWEEN TWO SCATTERING PEAKS, INDICATING PLASMON-MODULATED EMISSION MECHANISM IS MORE REASONABLE. THE LAST PROJECT FOUND THE NEAR-INFRARED EMISSION OF AU NANORODS AND AGGREGATED A
URI: http://scholarbank.nus.edu.sg/handle/10635/119371
Appears in Collections:Ph.D Theses (Open)

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