Phthalocyanine-Gold Nanoparticle Hybrids: Modulating Quenching with a Silica Matrix Shell

Herme G Baldovi; Vicente M Blas-Ferrando; Javier Ortiz; Hermenegildo Garcia; Fernando Fernández-Lázaro; Ángela Sastre-Santos

doi:10.1002/cphc.201600136

Phthalocyanine-Gold Nanoparticle Hybrids: Modulating Quenching with a Silica Matrix Shell

Chemphyschem. 2016 Jun 3;17(11):1579-85. doi: 10.1002/cphc.201600136. Epub 2016 Mar 30.

Authors

Herme G Baldovi¹, Vicente M Blas-Ferrando², Javier Ortiz², Hermenegildo Garcia³, Fernando Fernández-Lázaro², Ángela Sastre-Santos⁴

Affiliations

¹ Instituto Universitario de Tecnologia Química, CSIC-UPV, Avd. de los Naranjos, 46022, Valencia, Spain).
² Área de Química Orgánica, Instituto de Bioingeniería, Universidad Miguel Hernández de Elche, Avda. de la Universidad s/n, Elche, 03202, Spain.
³ Instituto Universitario de Tecnologia Química, CSIC-UPV, Avd. de los Naranjos, 46022, Valencia, Spain).. hgarcia@qim.upv.es.
⁴ Área de Química Orgánica, Instituto de Bioingeniería, Universidad Miguel Hernández de Elche, Avda. de la Universidad s/n, Elche, 03202, Spain. asastre@umh.es.

PMID: 26956128
DOI: 10.1002/cphc.201600136

Abstract

An asymmetrically substituted zinc phthalocyanine (ZnPc) with a terminal dithiolane group is anchored to Au nanoparticles (NPs) directly or through an interposed silica matrix. Transient absorption spectroscopy shows that the quenching of the ZnPc excited state by AuNPs occurs through a photoinduced electron transfer, the efficiency of which is modulated by the presence of the insulating silica matrix.

Keywords: electron transfer; nanoparticles; photochemistry; transient absorption spectroscopy; zinc phthalocyanine.

Publication types

Research Support, Non-U.S. Gov't