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Supramolecular photochemistry of encapsulated caged ortho-nitrobenzyl triggers. 2019

Nareshbabu Kamatham, and A Mohan Raj, and Richard S Givens, and José P Da Silva, and V Ramamurthy
Department of Chemistry, University of Miami, Coral Gables, FL 33146, USA. murthy1@miami.edu.

ortho-Nitrobenzyl (oNB) triggers have been extensively used to release various molecules of interest. However, the toxicity and reactivity of the spent chromophore, o-nitrosobenzaldehyde, remains an unaddressed difficulty. In this study we have applied the well-established supramolecular photochemical concepts to retain the spent trigger o-nitrosobenzaldehyde within the organic capsule after release of water-soluble acids and alcohols. The sequestering power of organic capsules for spent chromophores during photorelease from ortho-nitrobenzyl esters, ethers and alcohols is demonstrated with several examples.

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