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 uses. Their sensing applications are also discussed, considering the nature of their electronic structures and photophysical properties. The optical sensing applications of these compounds can be potentially expanded via structural modification, broadening their absorption amplitude and spectral emission range from the ultraviolet to near‐infrared (NIR) region. In this review, several recent practical applications of the heptamethine cyanine dyes for ion and small molecule sensing, as well as bioimaging, are covered and discussed.

ESIPT photoactive mono-formylated benzoxazole derivatives obtained through a Duff functionalization protocol using a simple synthetic methodology.

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.

No abstract

1-D nanostructures are promising materials for development of electrochemical devices offering benefits such as fast electron transfer rates and large surface areas. Copper oxide nanofibers (CuO-NFs) synthesized by electrospinning technique and subsequent thermal treatment, were used to modify paraffin-impregnated graphite electrode (PIGE) for a sensitive non-enzymatic glucose detection. The structure and morphology of CuO-NFs were characterized by scanning electron microscopy and transmission electron microscopy. The electrocatalytic activity towards glucose oxidation was evaluated by cyclic voltammetry and chronoamperometry. The results reveal a wide linear response to glucose ranging from 1.0 × 10 -6 to 1.93 × 10 -3 mol L -1 (R 2 = 0.9927). The limit of detection was 0.39 × 10 -6 mol L -1 (LOD = 3σ/s). The high aspect ratio of the nanofibers arranged in a three-dimensional network structure significantly enhances the electron transfer process. The electrode preparation is simple and rapid execution, and more importantly the graphite rod is relative low-cost and easy to achieve surface renewal for reusability. ]]>