Terminal Terthiophenediones: Fast-Decay Fluorescent Dyes and Their Efficient Syntheses

Abstract

Terminally acylated terthiophenes, in particular, the bis-pivaloyl derivative, were synthesized by Friedel–Crafts acylation with sub-stoichiometric amounts of standard zinc oxide and exhibit strong fluorescence and an ultrafast fluorescence decay of 400 ps. Their high photostability and large Stokes’ shifts are good prerequisites for applications in optical GBit fast data systems such as fiber optics in slip rings.

Naturally Derived Luminescent Material in Engineered Silk and Its Application as a Fluorescent Dye with a Large Stokes Shift and Sensing Capability

“…34,35 These results indicate that QueF can be categorized as a fast fluorescence decay dye with other advantages of high photostability and large Stokes shift, which are conducive to fast information and signal processing. 36 Additionally, the fluorescence characteristics of QueF were compared with those of commercial quercetin (Figure S10). There was no significant difference in the absorption spectrum, but in the fluorescence analysis, QueF appeared more than three times stronger, demonstrating its excellent performance as a fluorochrome.…”

“…We numerically fitted the experimental decay profiles with a monoexponential function e – t /τ and τs = 0.67 and 0.60 ns for QueF in EtOH/water and EtOH, respectively. Adding water causes slight changes in Φ and τ because the polarity of water influences the band structure of QueF. , These results indicate that QueF can be categorized as a fast fluorescence decay dye with other advantages of high photostability and large Stokes shift, which are conducive to fast information and signal processing . Additionally, the fluorescence characteristics of QueF were compared with those of commercial quercetin (Figure S10).…”