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Plasmonic Metal Nanoparticles in Sensing Applications: From Synthesis to Implementations in Biochemical and Medical
Grace Nemeth1, Jacob Speers1, Salman Shaheen1
1Department of Chemistry and Biochemistry, Wilfrid Laurier University, 75 University Ave. West, Waterloo, ON N2L 3C5, Canada.
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This work overviews recent (last 3-4 years) advances in sensing based on localized surface plasmon resonance (LSPR) of plasmonic metal nanoparticles (PMNPs). Starting with a brief background, recent reviews in the field and relevant related areas are summarized. Next, recent progress in PMNP synthesis and post-synthetic transformations is discussed in the context of PMNP sensing performance. Subsequently, preparation of sensing substrates based on PMNPs is examined. Recent developments in colorimetric and LSPR sensing constitute the core of the review material with the focus on implementation of PMNPs and their sensing modalities. Advances in other sensing methods with direct relevance to PMNP implementations are also highlighted in the context. Perspectives on directions of further advances in LSPR sensing with PMNPs and overcoming existing limitations conclude this review.
