While developing bis-camphorsulfonyl urea as a hydrogen-bonding catalysts, we discovered that the native conformation of the catalyst is unsuitable for inducing enantioselectivity. By complexing the catalyst with weakly ...
The monoanions of nitroalkanes are ambident nucleophiles that react with carbonate electrophiles through the oxygen atom. Products arising from reactivity at the carbon atom will yield alpha-nitro esters, which are precursors ...
Benzyl aryl carbonates can react with a nucleophile to yield an activated electrophile and an aryloxide anion. Previously, we had utilized this in the synthesis of alpha-nitro esters from nitroalkanes. To further understand ...
Bis-camphorsulfonyl urea, a newly developed hydrogen bonding catalyst, was evaluated in an enantioselective Friedel Crafts reaction. We observed that complexation of the sulfonyl urea with a sodium cation enhanced the ...
Shoaee, Safa; Deledalle, Florent; Tuladhar, Pabitra Shakya; Shivanna, Ravichandran; Rajaram, Sridhar; Narayan, K. S.; Durrant, James R.(American Chemical Society, 2015)
We report a comparison of charge carrier dynamics and device performance for low band gap polymer PBDTTT-CT in blends with the fullerene acceptor PC71BM and a PDI derivative with similar electron affinities. Charge separation ...
Chellappan, Kishore V.; Kandappa, Sunil Kumar; Rajaram, Sridhar; Narayan, K. S.(American Chemical Society, 2015)
Ferroelectric films of poly(vinylidene fluoride-co-trifluoroethylene) (PVDF-TrFE) provide a controlled environment to study the aggregation tendency of functional molecules such as perylene diimides (PDIs). The local ...