title: Investigation of adsorption mode of a novel group of N-benzylamino(boronphenyl)methylphosphonic acids using SERS.
abstract: Here, we report a systematic surface-enhanced Raman spectroscopy (SERS) study of the structures of five N-benzylamino(boronphenyl)-methylphosphonic acids: N-benzylamino-(3-boronphenyl)-S-methylphosphonic acid (m-PhS), N-benzylamino-(4-boronphenyl)-S-methylphosphonic acid (p-PhS), N-benzylamino-(2-boronphenyl)-R-methylphosphonic acid (o-PhR), N-benzylamino-(3-boronphenyl)-R-methyl-phosphonic acid (m-PhR), and N-benzylamino-(4-boronphenyl)-R-methylphosphonic acid (p-PhR) adsorbed on nanometer-sized colloidal particles (20-25 nm). For example, we showed that all of these molecules interact with the colloidal surface through a boronophenyl ring, which plane remained vertical on the surface. For p-PhS, a preferential interaction between the P=O bond and the colloidal silver surface is observed to be stronger than for the remaining compounds. The -P(OH)(2) and -B(OH)(2) fragments take part in the adsorption process. However, the B-O bond of p-PhS and p-PhR seemed to be tilted with respect to the silver surface.
authors.affiliation: Faculty of Chemistry, Jagiellonian University, ul. Ingardena 3, 30-060 Krakow, Poland. podstawk@chemia.uj.edu.pl
authors.forename: Edyta
authors.initials: E
authors.lastname: Proniewicz
authors.forename: Natalia
authors.initials: N
authors.lastname: Piergies
authors.forename: Yukihiro
authors.initials: Y
authors.lastname: Ozaki
authors.forename: Younkyoo
authors.initials: Y
authors.lastname: Kim
authors.forename: Leonard M
authors.initials: LM
authors.lastname: Proniewicz
mesh_terms: D000327:Adsorption; D001593:Benzyl Compounds / Q000737:chemistry*; D001896:Boron Compounds / Q000737:chemistry*; D007536:Isomerism; D008958:Models, Molecular; D008968:Molecular Conformation; D009943:Organophosphorus Compounds / Q000737:chemistry*; D012834:Silver / Q000737:chemistry; D013059:Spectrum Analysis, Raman / Q000379:methods*; D013499:Surface Properties
chemical_list: D001593:Benzyl Compounds; D001896:Boron Compounds; D009943:Organophosphorus Compounds; C032627:methylphosphonic acid; D012834:Silver