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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TL;DR: In this paper, an exemplary conjugated organic chromophore with a strong propensity for self-association through an excited-state process known as excimer formation is described.
Abstract: Pyrene is an exemplary conjugated organic chromophore with a strong propensity for self-association through an excited-state process known as excimer formation. Pyrene “excimers” and molecular “exc...
59 citations
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TL;DR: In this article, energy curves and transition moments of the excited valence states of Hg2 were obtained in a model calculation based on calculated Mg2 energy levels and the assumption that the asymptotic spin-orbit matrix elements for the Hg atom are applicable to the molecular states.
59 citations
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TL;DR: In this paper, the photophysical characteristics of a series of phenylacetylene dendrimers are examined in the context of simultaneous probe wobbling-in-a-cone and macromolecular dendriceric rotation as the mechanisms leading to fluorescence depolarization.
Abstract: Steady-state and time-resolved fluorescence data are used to examine the photophysical characteristics of a series of phenylacetylene dendrimers. Correlated excimer formation is observed in some solvents which is found to depend strongly upon initial excited-state placement within the dendrimer framework. The results suggest two distinct solvated molecular environments which give rise to independent photophysical behaviors. Models of excimer formation dynamics and relaxation kinetics are described. Additionally, fluorescence anisotropy measurements are examined in the context of simultaneous probe wobbling-in-a-cone and macromolecular dendrimeric rotation as the mechanisms leading to fluorescence depolarization. Approximate solutions to the model are shown to provide good descriptions of the solvated molecular dynamics.
59 citations
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TL;DR: In this paper, the absorption and luminescence spectra of N,N-dimethyl-p -cyanoaniline in a variety of solvents are reported.
59 citations
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TL;DR: In this article, the role of the electric dipole polarizability in the interaction of slow electrons with excited atoms is discussed and the available data on electron attachment to vibrationally/rotationally and electronically excited molecules and the processes of electron detachment from energy-rich transient anions are also summarized and discussed.
Abstract: Elastic, inelastic, and superelastic scattering of electrons by an electron-impact ionization of excited atoms are reviewed and discussed and the role of the electric dipole polarizability in the interaction of slow electrons with excited atoms is indicated. The meager knowledge on the scattering of slow electrons from vibrationally and electronically excited molecules is also summarized and discussed, as well as the available information on excitation and ionization by electron impact of electronically excited molecules. The available data on the processes of electron attachment to vibrationally/rotationally and electronically excited molecules and the processes of electron detachment from energy-rich transient anions are also summarized and discussed.
59 citations