Front Cover: Near‐Infrared Fluorophores Based on Heptamethine Cyanine Dyes: From Their Synthesis and Photophysical Properties to Recent Optical Sensing and Bioimaging Applications (Asian J. Org. Chem. 6/2022)

Abstract

This review summarizes diverse synthetic methodologies to prepare a wide range of heptamethine cyanine dyes, including symmetrical, unsymmetrical, and meso-substituted derivatives, and their photophysical properties and use. Their sensing applications are also discussed, considering the nature of their electronic structures and photophysical properties. The optical applications of these compounds can be potentially expanded through structural modification, broadening their absorption amplitude and spectral emission range from the visible to near-infrared (NIR) region. More information can be found in the Review by Fabiano S. Rodembusch et al.