Disulfide-strapped porphyrins for monolayer formation on gold
Porphyrins with a disulfide-containing strap have been prepared as an alternative to dithiols for self-assembled monolayer formation on gold surfaces. The strapped porphyrins have the advantage of greater air stability than their dithiol analogues. Cis and trans atropisomers of a strapped porphyrin were isolated. Gold electrodes modified with dithiol and disulfide porphyrins were not identical as evidenced by contact angle or electrochemical measurements.
Redman
JE
Cambridge Centre for Molecular Recognition, University Chemical Laboratory, Lensfield Road, Cambridge, CB2 1EW, U.K.
Sanders
JK