patial Separation of Plasmonic Hot-Electron Generation and a Hydrodehalogenation Reaction Center Using a DNA Wir

Autor(es)

Kogikoski Jr, Sergio ; Dutta, Anushree ^[1] ; Bald, Ilko ^[1]

Afiliação do(s) autor(es)

^[1] Kogikoski Jr, Jr., Sergio, Univ Potsdam, Inst Chem, Phys Chem, D-14476 Potsdam - Germany

• Tipo de documento: Artigo Científico
• Fonte: ACS NANO; DEC 2021.
• Citações Web of Science: 0

Resumo

Using hot charge carriers far from a plasmonic nanoparticle surface is very attractive for many applications in catalysis and nanomedicine and will lead to a better understanding of plasmon-induced processes, such as hot-chargecarrier- or heat-driven chemical reactions. Herein we show that DNA is able to transfer hot electrons generated by a silver nanoparticle over several nanometers to drive a chemical reaction in a molecule nonadsorbed on the surface. For this we use 8-bromo-adenosine introduced in different positions within a double-stranded DNA oligonucleotide. The DNA is also used to assemble the nanoparticles into nanoparticles ensembles enabling the use of surface-enhanced Raman scattering to track the decomposition reaction. To prove the DNA-mediated transfer, the probe molecule was insulated from the source of charge carriers, which hindered the reaction. The results indicate that DNA can be used to study the transfer of hot electrons and the mechanisms of advanced plasmonic catalysts. (AU)

• Processo FAPESP: 18/17831-6 - Estudos de Espectroscopia Raman Intensificado por Superfície em Estruturas de DNA Origami
• Beneficiário: Sergio Kogikoski Junior
• Modalidade de apoio: Bolsas no Exterior - Estágio de Pesquisa - Pós-Doutorado
• Processo FAPESP: 16/14507-8 - Estudos das Propriedades Estruturais e Eletroquímicas de Filmes Nanoestruturados baseados em DNA
• Beneficiário: Sergio Kogikoski Junior
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado