Cu-selective NIR fluorescence sensor based on heptamethine cyanine in aqueous media and its application.

A near-infrared (NIR) colorimetric fluorescence sensor, Cy7C3, based on heptamethine cyanine dye was synthesized for determining the presence of Cu ions. The sensor showed highly sensitive fluorescence quenching toward Cu ions in acetonitrile/buffer solution at physiological pH with long emission wavelength of 718 nm. Cy7C3 also provided an excellent selectivity to Cu ions over other competing metal ions, with a low detection limit of 9 ppb, which was lower than the maximum concentration of Cu ions in drinking water of U.

Characterization of microsatellite loci in Tilia platyphyllos (Malvaceae) and cross-amplification in related species.

Premise Of The Study: Microsatellite markers in the genus Tilia were developed to investigate the genetic variation in T. platyphyllos and its relationship with T. cordata.