Pyrrolopyrrole aza boron dipyrromethene based two-photon fluorescent probes for subcellular imaging
作者:Yimin Zhou、Chao Ma、Nengyue Gao、Qiong Wang、Pui-Chi Lo、Kam Sing Wong、Qing-Hua Xu、Takumi Kinoshita、Dennis K. P. Ng
DOI:10.1039/c8tb01832d
日期:——
A series of pyrrolopyrrole aza borondipyrromethene derivatives have been designed and synthesised as two-photon fluorescent probes. The bisalkynyl analogues, having a donor–π–donor quadrupolar skeleton, show a red-shifted Q band at ca. 700 nm in toluene and a two-photon absorption (TPA) cross-section up to 2349 GM at 1040 nm. To enable these dyes to be used for subcellular imaging, a branched oligoethylene
Water-Soluble Bis-triazolyl Benzochalcogendiazole Cycloadducts as Tunable Metal Ion Sensors
作者:Jonathan J. Bryant、Benjamin D. Lindner、Uwe H. F. Bunz
DOI:10.1021/jo3024889
日期:2013.2.1
A series of bis-triazolyl benzochalcogendiazoles was synthesized to investigate their metal-binding capabilities. These fluorophores were formed through the cycloaddition of an ethynylated benzochalcogendiazole and a water-soluble azide. Variation of the chalcogen heteroatom was seen to affect the photophysical properties as well as the metal-binding activity. These cycloadducts exhibited a distinct response to Cu2+, Ni2+, and Ag+ in water. The binding affinity for the copper and nickel ions increased moving the chalcogen atom from O to Se. Statistical analysis of the spectral data enabled differentiation of Ag+, Cu2+, and Ni2+ ions.