Publications by authors named "Kenta Nishimura"
Article Synopsis
- New organic luminophores called bis(tricyclic) aromatic enes (BAEs), featuring 6-6-6-membered frameworks like acridine and xanthene, display blue-to-green fluorescence in solid states and polymer films with high quantum yields.
- These BAEs are synthesized through a palladium-catalyzed double cross-coupling reaction, producing microcrystals or powders that fluoresce brilliantly.
- Theoretical calculations indicate that their light absorption involves π-π* transitions, with a distinct charge transfer occurring in the 10,10-dioxido-9-thioxanthene variant.
The design and development of organic luminophores that exhibit efficient ultraviolet (UV) fluorescence in the solid state remains underexplored. Here, we report that 1,4-dialkenyl-2,5-dialkoxybenzenes and 1,4-dialkenyl-2,5-disiloxybenzenes act as such UV-emissive fluorophores. The dialkenyldioxybenzenes were readily prepared in three steps from 2,5-dimethoxy-1,4-diacetylbenzene or 2,5-dimethoxy-1,4-diformylbenzene via two to four steps from 1,4-bis(diethoxyphosphonylmethyl)-2,5-dimethoxybenzene.
View Article and Find Full Text PDFThis study was performed to identify genetic polymorphisms in multidrug and toxin extrusion 2-K (MATE2-K, SLC47A2), a proton/organic cation antiporter that plays a role in the transport of organic cations across the apical membrane in kidney epithelial cells into the urine, and to demonstrate their effects on MATE2-K functions in vitro. Four of the thirty single nucleotide polymorphisms (SNPs) we identified in three ethnic groups (Caucasian, African American, and Japanese) were novel [308C>G (P103R), c.487-8C>T, 818A>G (Y273C), and c.
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