Tuning the electronic transition energy of indole<i>via</i>substitution: application to identify tryptophan-based chromophores that absorb and emit visible light
Robert J. Micikas, Ismail A. Ahmed, Arusha Acharyya, Amos B. Smith, Feng Gai
Abstract
The unnatural amino acids 4CHO-tryptophan and 4NO<sub>2</sub>-tryptophan can be excited by visible light and could afford useful application as biological chromophores.
Topics & Concepts
Indole testFluorescenceFluorophoreTryptophanPhotochemistryChemistryQuantum yieldChromophoreExcited stateAbsorption (acoustics)Fluorescence spectroscopyMaterials scienceStereochemistryAmino acidOpticsNuclear physicsPhysicsBiochemistryComposite materialAdvanced Fluorescence Microscopy TechniquesPhotoreceptor and optogenetics researchClick Chemistry and Applications