Porphyrin architectures tailored for studies of molecular information storage.
A molecular approach to information storage employs redox-active molecules tethered to an electroactive surface. Zinc porphyrins tethered to Au(111) or Si(100) provide a benchmark for studies of information storage. Three sets of porphyrins have been synthesized for studies of the interplay of molecular design and charge-storage properties: (1) A set of porphyrins is described for probing the effect of surface attachment atom on electron-transfer kinetics. Each porphyrin bears a meso-CH2X group for surface attachment where X = OH, SAc, or SeAc. (2) A set of porphyrins is described for studying the effect of surface-charge density in monolayers. Each porphyrin bears a benzyl alcohol for surface attachment and three nonlinking meso substituents of a controlled degree of bulkiness. (3) A set of porphyrins is described that enables investigation of on-chip patterning of the electrolyte. Each porphyrin bears a formyl group distal to the surface attachment group for subsequent derivatization with a molecular entity that comprises the electrolyte. Taken together, this collection of molecules enables a variety of studies to elucidate design issues in molecular-based information storage.
Carcel
Carole M
CM
Department of Chemistry, North Carolina State University, Raleigh, North Carolina 27695-8204, USA.
Laha
Joydev K
JK
Loewe
Robert S
RS
Thamyongkit
Patchanita
P
Schweikart
Karl-Heinz
KH
Misra
Veena
V
Bocian
David F
DF
Lindsey
Jonathan S
JS