Browsing by Author "Samanta, Shampa R."
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- A latent reaction in a model gfp chromophore revealed upon confinement: photohydroxylation of ortho-halo benzylidene-3-methylimidazolidiones via an electrocylization processPublication . Samanta, Shampa R.; Silva, José P. da; Baldridge, Anthony; Tolbert, Laren M.; Ramamurthy, V.Excited state behavior of halogen substituted model GFP chromophores was investigated in an acetonitrile solution and in a confined environment provided by an octa acid capsule in water. Of the ortho, meta, and para halogen substituted GFP chromophores only the ortho compounds gave a new product resulting from an unprecedented photosubstitution of halogens by the hydroxyl group. This unusual reaction highlights the importance of confined spaces in bringing about some unattainable photoreactions.
- Release of guests from encapsulated masked hydrophobic precursors by a phototriggerPublication . Jayaraj, Nithyanandhan; Jagadesan, Pradeepkumar; Samanta, Shampa R.; Silva, José P. da; Ramamurthy, V.Examples of release of organic acids from encapsulated p-methoxyphenacyl esters provided here demonstrate the value of a phototrigger strategy to release chemicals of interest in water from hydrophobic precursors. In this study, a photochemical beta-cleavage process centered on the p-methoxyphenacyl group is exploited to release the acid of interest from a water-soluble capsule made up of octa acid.