Topic
Xanthene
About: Xanthene is a research topic. Over the lifetime, 2132 publications have been published within this topic receiving 34803 citations. The topic is also known as: Xanthene & dibenzo[a,e]pyran.
Papers published on a yearly basis
Papers
More filters
TL;DR: Aromatic-ring-layered polymers were synthesized by Sonogashira-Hagihara coupling reaction using xanthene as a scaffold as mentioned in this paper, which was characterized by various spectroscopic and electrochemical methods.
Abstract: Aromatic-ring-layered polymers were synthesized by Sonogashira–Hagihara coupling reaction using xanthene as a scaffold. The polymers were characterized by various spectroscopic and electrochemical methods. The polymers emit brightly without excimer formation, despite the layered structure.
8 citations
TL;DR: This work designed two novel peroxynitrite probes and simulated their detection capabilities in the near-infrared region and demonstrated that the PIET in the probe with an ether linkage occurs from the benzoic acid to the xanthene moiety, rather than from the phenol moiety to the fluorescein.
Abstract: The development of probes for rapid and selective detection of peroxynitrite in vivo is of great importance in biological science. We investigate different photoinduced electron transfer (PIET) processes of two generations of peroxynitrite probes. Each has fluorescein and phenol moieties; one is conjugated by an ether linkage while the other is conjugated via an amine linkage. Using theoretical calculations, we demonstrated that the PIET in the probe with an ether linkage occurs from the benzoic acid to the xanthene moiety. In contrast, the PIET in the probe with an amine linkage occurs from the phenol moiety to the fluorescein. This suggests that better sensitivity can be accomplished in probes with an amine linkage than with an ether linkage. Following this model, we designed two novel peroxynitrite probes and simulated their detection capabilities in the near-infrared region.
8 citations
TL;DR: The violet chemiluminescence emission (CL-emission) resulting from the reaction of succinylfluorescein with oxygen in an aerated alkaline aqueous system of a high concentration of an aprotic solvent (DMSO or DMF), an especially intense emission occurring in aerated dry DMSO with tert-BuOK as base, was found in this article.
Abstract: In the course of our studies of the chemiluminescence of xanthene dyes, we found the violet chemiluminescence emission (CL-emission) resulting from the reaction of succinylfluorescein with oxygen in an aerated alkaline aqueous system of a high concentration of an aprotic solvent (DMSO or DMF), an especially intense emission occurring in aerated dry DMSO or DMF with tert-BuOK as base. The CL-emission comprised two emission components: an intense violet emission (a peak, at 410 nm) whose spectral distribution was similar to that of the fluorescence band which appeared during the course of the reaction, and a weak greenish-yellow emission similar to the fluorescence of the dye. By isolating and identifying the violet-fluorescent reaction product with an authentic sample, and by comparing the CL-emission with the fluorescence emission of the isolated product, it was concluded that the violet CL-emission may be attributed to the formation of an excited dianion of 3,6-dihydroxyxanthone. The reaction path leadin...
8 citations
TL;DR: In this paper, the direct arylation synthesis of a cyclic compound based on xanthene-linked donor-acceptor-donor π-stacked dimer has been successfully demonstrated.
Abstract: The direct arylation synthesis of a cyclic compound based on xanthene-linked donor–acceptor–donor π-stacked dimer has been successfully demonstrated. The Pd-catalyzed direct arylation reaction of d...
8 citations
TL;DR: A high degree of conjugation control is achieved in that modulation of the stoichiometry of the label and enzyme results in incorporation from seven to eight fluorophores per protein, depending on the ratio of the phosphorothioate fluorescein to alkaline phosphatase.
8 citations