568592-06-3

Upstream product

• 624-38-4 para-diiodobenzene 
• 568592-05-2 dimethyl(7-nitro-9H-carbazol-2-yl)amine 
• 568592-03-0 dimethyl-(4'-nitro-2'-amino-biphenyl-4-yl)-amine 
• 568592-04-1 dimethyl-(4'-nitro-2'-azido-biphenyl-4-yl)-amine 
• 84600-70-4 4-(N,N-dimethyl)-1-tributylstannylbenzene 
• 10403-47-1 2-bromo 5-nitroaniline 

Downstream Products

• 568592-07-4 dimethyl[7-nitro-9-(4-trimethylsilanylethynylphenyl)-9H-carbazol-2-yl]amine 
• 568592-08-5 [9-(4-ethynylphenyl)-7-nitro-9H-carbazol-2-yl]dimethylamine 

Relevant academic research and scientific papers

En route to surface-bound electric field-driven molecular motors

Four caltrop-shaped molecules that might be useful as surface-bound electric field-driven molecular motors have been synthesized. The caltrops are comprised of a pair of electron donor-acceptor arms and a tripod base. The molecular arms are based on a carbazole or oligo(phenylene ethynylene) core with a strong net dipole. The tripod base uses a silicon atom as its core. The legs of the tripod bear sulfur-tipped bonding units, as acetyl-protected benzylic thiols, for bonding to a gold surface. The geometry of the tripod base allows the caltrop to project upward from a metallic surface after self-assembly. Ellipsometric studies show that self-assembled monolayers of the caltrops are formed on Au surfaces with molecular thicknesses consistent with the desired upright-shaft arrangement. As a result, the zwitterionic molecular arms might be controllable when electric fields are applied around the caltrops, thereby constituting field-driven motors.