The effect of surface adsorption on the hyper-Rayleigh scattering of large and small CdSe nanoparticles

TitleThe effect of surface adsorption on the hyper-Rayleigh scattering of large and small CdSe nanoparticles
Publication TypeJournal Article
Year of Publication2002
AuthorsLandes, CF, Braun, M, EL-Sayed, MA
JournalChemical Physics Letters
Volume363
Pagination465-470
Date PublishedSep
ISBN Number0009-2614
Accession NumberWOS:000178894900009
Abstract

Hyper-Rayleigh scattering is used to compare the effect of the addition of n-butylamine to large (3.2 nm) and small (1.6 nm) Use nanoparticles (NPs). It is found that although the adsorption of n-butylamine on large NPs enhances their nonlinear optical response, it has the opposite effect when adsorbed on the small nanoparticles for which the amine adsorption was found previously to induce structural changes. This observation is consistent with an increase in the symmetry of the nanocrystal structure such as would be observed in a phase change from a 4-coordinate wurtzite crystal structure to that of a 6-coordinate zinc-blend form. (C) 2002 Published by Elsevier Science B.V.

DOI10.1016/s0009-2614(02)01169-7