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.
Alkynylated Phenazines: Synthesis, Characterization, and Metal-Binding Properties of Their Bis-Triazolyl Cycloadducts
作者:Jonathan J. Bryant、Yexiang Zhang、Benjamin D. Lindner、Evan A. Davey、Anthony Lucas Appleton、Xuhong Qian、U. H. F. Bunz
DOI:10.1021/jo3012978
日期:2012.9.7
have synthesized a series of ethynylated phenazines and their bis-triazolyl cycloadducts to serve as metal ion sensors. Binding of metal ions is achieved through coordination to the phenazine nitrogen atom and the triazole ring. To allow metal sensing in aqueous solution, the triazole units are substituted with water-soluble ethylene glycol chains. These phenazine cycloadducts exhibit a selective affinity