Home
Resources
Publications
In Situ Metalation of Free Base Phthalocyanine Covalently Bonded to Silicon Surfaces

In Situ Metalation of Free Base Phthalocyanine Covalently Bonded to Silicon Surfaces

Fabio Lupo, Cristina Tudisco, Federico Bertani, Enrico Dalcanale, Guglielmo G Condorelli

Beilstein J Nanotechnol. 2014 Nov 25;5:2222-9.

PMID: 25551050

Abstract:

Free 4-undecenoxyphthalocyanine molecules were covalently bonded to Si(100) and porous silicon through thermic hydrosilylation of the terminal double bonds of the undecenyl chains. The success of the anchoring strategy on both surfaces was demonstrated by the combination of X-ray photoelectron spectroscopy with control experiments performed adopting the commercially available 2,3,9,10,16,17,23,24-octakis(octyloxy)-29H,31H-phthalocyanine, which is not suited for silicon anchoring. Moreover, the study of the shape of the XPS N 1s band gave relevant information on the interactions occurring between the anchored molecules and the substrates. The spectra suggest that the phthalocyanine ring interacts significantly with the flat Si surface, whilst ring-surface interactions are less relevant on porous Si. The surface-bonded molecules were then metalated in situ with Co by using wet chemistry. The efficiency of the metalation process was evaluated by XPS measurements and, in particular, on porous silicon, the complexation of cobalt was confirmed by the disappearance in the FTIR spectra of the band at 3290 cm(-1) due to -NH stretches. Finally, XPS results revealed that the different surface-phthalocyanine interactions observed for flat and porous substrates affect the efficiency of the in situ metalation process.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP119457817	2,3,9,10,16,17,23,24-Octakis(octyloxy)-29H,31H-phthalocyanine		119457-81-7	Price

As a specialist in analytical chemical Products, Alfa Chemistry offers consumers a wealth of raw materials and a full range of technologies and services.

QUICK LINKS

HEADQUARTERS

Tel:

Fax:

Email: