The ̄uorescence quenching rate constants of pyrene monomer and excimer by CH3I were obtained at several temperatures in methylcyclohexane. Both quenching processes are kinetically controlled, allowing insight on the mechanism of quenching. The rate constants have both temperature-independent and temperature-dependent components. The temperature-independent component for both monomer and excimer...

In this letter, we report the first observation of metal-enhanced excimer (P-type) fluorescence from pyrene. Pyrene in close proximity to silver island films (SIFs) shows enhanced pyrene excimer emission with a approximately 2.5-fold higher emission intensity observed from SIFs and 5x10(-3) M pyrene, as compared to a quartz control sample containing no silver nanoparticles. Our findings suggest...

The gain characteristics of a discharge-pumped ArF excimer amplifier are measured with ~700-fs-long pulses. The small-signal gain and saturation energy are found to be 0.17 cm(-1) and 3.65 +/- 0.15 mJ/cm(2), respectively. The maximum output energy density extracted from the deeply saturated amplifier is as much as 10 mJ/cm(2). The demonstrated femtosecond gain characteristics of ArF indicate th...

Zn(2+)-induced fluorescence enhancement of the TPEN (N,N,N',N'-tetrakis(2-pyridylmethyl)ethylenediamine)-based ligand, N,N-bis(1-isoquinolylmethyl)-N',N'-bis(pyridylmethyl)ethylenediamine (N,N-1-isoBQBPEN, 1b), has been investigated. Upon Zn(2+) binding, 1b shows a fluorescence increase (ϕZn = 0.028) at 353 and 475 nm. The fluorescence enhancement at longer wavelengths is due to intramolecular ...

Review of the MEDLINE, Embase, Web Science, and Cochrane databases through February 1, 2021. There were 1348 patients from 14 eligible studies (10 prospective, randomized; 4 retrospective) with femoropopliteal artery in-stent restenosis (FP-ISR) who underwent plain old balloon angioplasty (POBA), drug-coated (DCBA), peripheral cutting angioplasty, Viabahn endoprosthesis, directional atherectomy...

Quinoline and naphthalene-based fluororeceptors 1 and 2 have been designed and synthesized for detection of hydroxy carboxylic acids in less polar solvents. The receptor 1 shows monomer emission quenching followed by excimer emission upon hydrogen bond-mediated complexation of carboxylic acids. The excimer emission distinguishes aromatic dicarboxylic acids from aliphatic dicarboxylic acids and ...

Ratiometric pH sensing by multichannel emission response utilizing excimer/monomer emissions of phenanthrene and rhodamine at single excitation wavelength.

Excimer lasers are proving to be highly successful for fabricating industrial components with feature sizes in the range between 0.05–1,000μm (see Fig. 1). As well as providing a 15 year, 5 generation extension to optical lithography as used in the manufacture of silicon chips, excimer lasers are used for microfabricating many of the critical features in a wide variety of the electronic and tel...

Pyrene-containing compounds are commonly used in a number of fluorescence-based applications because they can form excited-state dimers (excimers) by stacking interaction between excited-state and ground-state monomers. Their usefulness arises from the facts that excimer formation requires close proximity between the pyrenes and that the excimer emission spectrum is very different from that of ...