Topic
Excimer
About: Excimer is a research topic. Over the lifetime, 3725 publications have been published within this topic receiving 75104 citations.
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39 citations
TL;DR: In this paper, the Schuler band of ND4 was observed to transition from either the 3s, 2A1 ground state or the 3p, 2F2 excited state, the former being more likely.
Abstract: Twenty‐one lines of the Schuler band of ND4, previously observed in emission from high pressure ND3 discharges and assigned to a transition between excited states, have been observed in absorption in the Hg‐photosensitized reaction of ND3. In this system ND4 is probably formed by a reaction of the HgND*3 exciplex. The observed transition originates from either the 3s, 2A1 ground state or the 3p, 2F2 excited state, the former being more likely.
39 citations
TL;DR: In this paper, the excimer formation between pyrenes attached to the ends of a poly(ethyleneoxide) sample of nominal molecular weight 9600 has been examined in twelve solvents.
Abstract: Intramolecular excimer formation between pyrenes attached to the ends of a poly(ethyleneoxide) sample of nominal molecular weight 9600 has been examined in twelve solvents. In ten non-protic solvents the excimer to pyrene locally excited fluorescene intensity ratio IE/IM is inversely proportional to solvent viscosity, as expected for a diffusion-controlled process. Similar results were obtained for 〈k1〉 values obtained from flash-photolysis studies, where 〈k1〉 is the average rate constant for end-to-end cyclization in the polymer. In water and methanol, the extent of excimer emission and the rate of intramolecular excimer emission and the rate of intramolecular excimer formation were substantially greater than one would infer on the basis of solvent viscosity alone.
39 citations
TL;DR: In this article, pyrene excimer fluorescence was obtained in both polar and non-polar solvents and the observed shifts were explained in terms of solute-solvent dispersion interactions, a solute transition dipole moment term and the solvent Stark effect.
39 citations
TL;DR: White emission with two sharp strong peaks was obtained by introducing a terphenyl group into a highly twisted core chromophore, which promoted a molecular orientation in the film state suitable for excimer formation.
39 citations