Coaxial Multichromophoric Photosystems

Sforazzini G

Primo

;Sakai N;Matile S

2012-01-01

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Abstract

Here we report preparationofmultichromophoric coaxial charge-transportarchitectures consisting of phthalocyanine(Pc) andperylenediimide (PDI).ArationallydesignedPccontainingstructurallysupportingpeptide side-chains, hydrazides, polymerizable disulfidesand diphosphonate anchoringgroupswascovalentlyboundontothe ITOsurface.Self-organizing surface-initiated polymerization(SOSIP)was usedto buildverticallyaligned Pcassembly(p-typechannel)covalentlylinkedbydisulfide bonds.Hydrazoneexchange of benzaldehydes withPDIaldehydes introduces an outerverticalelectron-transportingpathway(n-type channel).[1]The proposedbottom-upapproach affords formation of well-organized verticalcharge-transportcoaxial architectures which have largeinterestinthe optoelectronicsfield.