Interfacial structures of 1-methyladenine, 3-methyladenine, 7-methyladenine, and 9-methyladenine on gold nanoparticles by Raman spectroscopy

Manager 2019.03.07 13:57 Views : 6782

Year 2017 
Journal Info. Journal of Molecular Structure, 1128, 215-220 (2017) 
Author Dinh Bao Nguyen, Sang-Woo Joo* and Jaebum Choo* 
etc.  

Abstract

Interfacial structures of 1-methyladenine (1 MA), 3-methyladenine (3 MA), 7-methyladenine (7 MA), and 9-methyladenine (9 MA) on gold nanoparticles (AuNPs) were investigated by means of surface-enhanced Raman scattering (SERS). Different positions of the methyl group in the purine ring of adenine were found to result in not only dissimilarity among Raman spectral features but also surface binding schemes. Density functional theory (DFT) calculations predicted that the amino-9H tautomeric form would be most stable among the conformers of 1 MA, 3 MA, 7 MA, and 9 MA including amino and imino tautomeric conformers. SERS spectral features were analyzed with appropriate vibrational assignments based on DFT calculations. After considering the enhancement factors, the Raman spectra of 1 MA, 3 MA, 7 MA, and 9 MA on AuNPs were dissimilar, suggesting the methyl group at the purine ring of methyladenine may be significantly affecting the binding on AuNPs. Our Raman study indicates the position of the methyl group in methyladenine may play a significant role in coordinating metal surfaces.

 

 

Download PDF = Click Attachment, please.

I want to
List
Year Title Journal Info. etc.
2019  SERS-based droplet microfluidics for high throughput gradient analysis file Lab on a Chip, 19, 674-681 (2019)   
2019  Green multi-functional monomer based ion imprinted polymers for selective removal of copper ions from aqueous solution file Journal of Colloid and Interface Science, 541(1), 376-386 (2019)   
2019  Application of SERS-based Microfluidics for In Vitro Diagnostics file In “Medical and Biological Applications Using Microfluidic Devicesâ€
Book Chapter 3, pp 53-70, Springer (2019) 		 Book Chapter 
2019  Direct visualization of a surface-enhanced Raman spectroscopy nano-gap via electrostatic force microscopy: Dependence on charge transfer from the underlying surface nano-gap distance file Applied Surface Science, 479(15), 874-878 (2019)   
2018  Nanoscale graphene oxide-induced metallic nanoparticle clustering for surface-enhanced Raman scattering-based IgG detection file Sensors & Actuators B, 255, 183-192 (2018)   
2018  Culture-free Detection of Bacterial Pathogens on Plasmonic Nanopillar Arrays Using Rapid Raman Mapping file ACS Applied Materials & Interfaces, 10, 6831-6840 (2018)   
2018  M13 Bacteriophage/Silver Nanowire Surface-Enhanced Raman Scattering Sensor for Sensitive and Selective Pesticide Detection file ACS Applied Materials & Interfaces, 10, 10388-10397 (2018)   
2018  PEGylated Nanographene–mediated Metallic Nanoparticle Clusters for Surface Enhanced Raman Scattering–based Biosensing file Analyst, 143, 2604-2615 (2018)   
2018  Highly Sensitive Detection of High-risk Bacterial Pathogens Using SERS-based Lateral Flow Assay Strips file Sensors & Actuators B, 270, 72-79 (2018)   
2018  Plasmonic Colorimetric Sensors Based on Etching and Growth of Noble Metal Nanoparticles: Strategies and Applications file Biosensors & Bioelectronics, 114, 52-65 (2018)   
2018  Sensitive and Reproducible Immunoassay of Multiple Mycotoxins Using Surface-Enhanced Raman Scattering Mapping on Three-Dimensional Plasmonic Nanopillar Arrays file Small, 1801623 (2018).   
2018  Fluoropolymer Coated PDMS Microfluidic Devices for Application in Organic Synthesis file Chemistry - A European Journal, 24, 12078-12083 (2018)   
2018  Reinforcement Learning for Dynamic Microfluidic Control file ACS Omega, 3, 10084-10091 (2018)   
2018  An optofluidic system with integrated microlens arrays for parallel imaging flow cytometry file Lab on a Chip, 18, 3631-3637 (2018)   
2018  Simultaneous immunoassays of dual prostate cancer markers using a SERS-based microdroplet channel file Biosensors & Bioelectronics,119, 126-133 (2018)   
2018  A Sample-in-Digital-Answer-out System for Rapid Detection and Quantitation of Infectious Pathogens in Bodily Fluids file Analytical and Bioanalytical Chemistry, 410, 7019-7030 (2018).   
2018  Cut-and-Paste Transferrable Pressure Sensing Cartridge Films file Chemistry of Materials, 30(18), 6410–6419 (2018)   
2018  Experimental Investigation of Surface Morphology of a Chemical Vapor Deposition-grown Graphene Monolayer Mediating with a Gap-Plasmonic System and the Related Ripple Shape Study file Journal of Applied Physics, 124, 223101 (2018)   
2017  Quantitative analysis of thyroid-stimulating hormone (TSH) using SERS-based lateral flow immunoassay file Sensor and Actuators B, 240, 358-364 (2017)   
2017  Interfacial structures of 1-methyladenine, 3-methyladenine, 7-methyladenine, and 9-methyladenine on gold nanoparticles by Raman spectroscopy file Journal of Molecular Structure, 1128, 215-220 (2017)   
Write Tag