Several possible routes to obtain an optically active trityl system have been studied. Model systems, using triphenylcarbinol and 4-bromo-^1-chlorotriphenylcarbinol, were employed. Several routes to break down the glycolic acid derivatives of these alcohols were studied. These involve the preparation of the silver salt of the acid and its reaction with bromine; the reaction of the acid with mer...

Hydrophilic photolabile protecting groups (PPGs) for hydroxyl protection have been developed. The new PPGs are derived from 3-(dimethylamino)trityl (DMATr) by replacing the two methyl groups with two hydrophilic butyryl groups. The new PPG reagents can be readily prepared and installed. They are stable in the dark but can be removed cleanly and efficiently in aqueous environments upon irradiati...

the synthesis of the title compound is described. deprotection of cis(n-trityl-3-azido-4-styryl)-2-azetidinone to cis-(3-azido-4-styryl)-2-azetidinone was found to be accelerated by the special salt effect under acidic condition

Reproducibility, stability and the coupling between electrical and molecular properties are central challenges in the field of molecular electronics. The field not only needs devices that fulfill these criteria but they also need to be up-scalable to application size. In this work, few-molecule based electronics devices with reproducible electrical characteristics are demonstrated. Our previous...

two series (a and b) of n- substituted heteroaromatic compounds related to clotrimazole were synthesized. imidazole ring of the clotrimazole was replaced by 2-methylimidazole in series a, and by 2-methyl-4-nitroimidazole in series b. o-cholortrityl moiety of clotrimazole was also replaced by trityl, mono or dimethoxy trityl. chemical structures of all the new compounds were confirmed by spec-tr...

The available theoretical approaches aiming at describing Dynamic Nuclear spin Polarization (DNP) in solutions containing molecules of biomedical interest and paramagnetic centers are not able to model the behaviour observed upon varying the concentration of trityl radicals or the polarization enhancement caused by moderate addition of gadolinium complexes. In this manuscript, we first show exp...

A strategy for the fabrication of high surface area poly(3-hexylthiophene) thin films by removal of nanoscale domains formed from graft copolymers is presented. This approach relies on the synthesis and characterization of cleavable graft copolymers based on regioregular poly(3-hexylthiophene) (rr-P3HT) main chain and sacrificial poly(styrene) side chains. An alkoxyamine initiator based on 2,2,...