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A porphyrin-phospholipid conjugate with quenched fluorescence was utilized to serve as both the Raman dye and a stabilizing, biocompatible surface coating agent on gold nanoparticles. Through simple synthesis and validation with spectroscopy and confocal microscopy, we show that this porphyrin-lipid stabilized AuNP is a novel SERS probe capable of cellular imaging. To date, this is the first use of porphyrin as a Raman reporter molecule for SERS based imaging.
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Tam et al. (2012) studied this question.
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