Alkanethiols phthalocyanines

Phthalocyanines possessing w-alkanethiol moieties (20) form monolayers on the gold surface. The fluorescent emission from the monolayers can be quenched by NO2, which makes them potentially useful for sensing the environmentally important NO2. Interactions with NO2 can also be recorded by SPR measurements453 -455. 

Russell et al. synthesised a series of phthalocyanine alkanethiols and disulfides with different length of alkyl spacers (Fig. 23). IRRAS spectroscopy indicates that the orientation of the phthalocyanine macrocycles towards the gold... 

Fig. 23 Phthalocyanine alkanethiols synthesised by Russell et al. and schematic representation of the possible orientation of the phthalocyanine SAMs on the gold substrate [172-174]...

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