Towards a fully optimised organic LED device: analysis of surface synthesis using coupling reactions by ToF-SIMS

R. Pinna, F. Jamme, Frank J M Rutten, E. F. Smith, M. R. Willis, D. Briggs, Martin R S McCoustra

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)

Abstract

Time-of-flight secondary ion mass spectrometry (ToF-SIMS) and polarisation-modulation reflection-absorption infrared spectroscopy (PM-RAIRS) have been used to monitor the surface synthesis of self-assembled aromatic pi-conjugated molecular wires on gold substrates as a step towards a novel structure for organic electroluminescent devices (OLEDs). The wires have been synthesised using a series of Schiff's base coupling reactions in solution on a self-assembled monolayer of an aromatic thiolate anchor. ToF-SIMS and PM-RAIRS measurements have demonstrated that: (i) the anchor molecules self-assemble at the gold surface, (ii) the anchor molecules selectively react through imino coupling reactions with additional wire units with high efficiency and (iii) the wire-like structure is predominantly orientated normal to the surface.

Original languageEnglish
Pages (from-to)6672-6675
Number of pages4
JournalApplied Surface Science
Volume252
Issue number19
DOIs
Publication statusPublished - 30 Jul 2006

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