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Geschwind, S.; Devlin, G. E.; Cohen, Richard L.; Chinn, S. R.

doi:10.1103/physrev.137.a1087

Cited by 153 publications

(32 citation statements)

References 29 publications

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“…Since these mechanisms have only rarely been discussed in connection with properties of transition metal complexes, it is useful to briefly introduce the main mechanisms before the properties of [Ru(bpy)3] 1+ are discussed in detail. The following summary is based on [97,[222][223][224][225][226][227]. s The value reported in [129] for the short decay time is slightly smaller than given here, since the time resolution of our early equipment was not sufficient.…”

Section: Vibrational Satellite Structures Of [Ru(bpu 2+mentioning

confidence: 99%

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Characterization of excited electronic and vibronic states of platinum metal compounds with chelate ligands by highly frequency-resolved and time-resolved spectra

Yersin

Humbs

Strasser

1997

Topics in Current Chemistry

133

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The lowest excited electronic states of triplet character and related vibronic properties are discussed in detail on the basis of highly frequency-resolved and time-resolved emission and excitation spectra of per-protonated, per-deuterated, and partially deuterated [Pt(bpy)2] 2+, [Rh(bpy)3] 3+, [Ru(bpy)3] 2+, and [Os(bpy)3] ~+. Emphasis is placed on the use of the enormous amount of information displayed in well-resolved vibrational satellite structures. For comparison, IR data and Raman spectra are also used. In addition, data are given for [Ru(bpz)Pt(3-thpy) 2, Pt(2-thpy)(CO)(Cl), Pt(2-thpy) 2, Pt(qol)2, Pt(qtl)2. Trends and effects are also addressed, which are related to the amount of metal d-orbital mixing. In particular, we discuss the role of traps and sites in the context of high-resolution, site-selective, and line-narrowed spectra of chromophores doped into matrices; the interplay between states of ligand-centered 3rtrr* and ~MLCT character; localization versus delocalization behavior; radiative decay properties; zero-field splittings; spin-lattice relaxations via direct and Orbach mechanisms; Arrhenius behavior after time delay; Franck-Condon activities and Huang-Rhys factors; Franck-Condon versus Herzberg Teller activities and tunability of these activities under high magnetic fields; isotope marking and deuteration effects; aggregate formation of [Ru(bpy)3]2+; and radiationless energy transfer in neat [Ru(bpy)3](PF6) 2. These effects are in part treated in detail, but the aim is to use easy-to-follow descriptions. In particular, it is emphasized throughout this review that chemical tunability opens fascinating possibilities for controlled variation of physical properties.

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Section: Vibrational Satellite Structures Of [Ru(bpu 2+mentioning

confidence: 99%

“…17 represents the low-temperature value of T~ 1 . The pre-factor of the exponential is usually [165,[223][224][225][226][227] much larger, but a comparison to an independent observable of [Ru(bpy)3] 2+ in [Zn(bpy)3](C104) 2 has not yet been discussed in the literature.…”

Section: Direct Processes Ofmentioning

confidence: 99%

Characterization of excited electronic and vibronic states of platinum metal compounds with chelate ligands by highly frequency-resolved and time-resolved spectra

Yersin

Humbs

Strasser

1997

Topics in Current Chemistry

133

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“…If these are taken equal, we find for the frequency distribution of the acoustic wave a Gaussian with a full width of approximately 54 MHz at half maximum, three orders of magnitude smaller than the phonon frequency. This result compares with the E( 2 E) line width from optically detected EPR [4,5]. Sources contributing to inhomogeneous broadening of the E( 2 E) transition are random magnetic fields from the nearby Al nuclear moments as well as crystalline imperfections causing wandering of the c axis, both favoring a Gaussian profile.…”

mentioning

confidence: 84%

SASER action in optically excited ruby: Angular and spectral distribution

Tilstra¹,

Arts²,

Wijn³

2007

J. Phys.: Conf. Ser.

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Selective pulsed optical excitation is used in 500-at.ppm ruby (Al2O3:Cr 3+) at 1.4 K to prepare complete population inversion of the Zeeman-split E(2 E) doublet in a zone of limited size. The inversion results in prolific stimulated emission of phonons resonant with the one-phonon transition connecting the doublet states. The phonons are detected via the R1 luminescence. The angular and spectral distributions of the associated acoustic wave are measured using a geometry with inverted zones at either end of the crystal, one serving as generator and the other as detector. The divergence appears to be governed by the geometry of the zone, while the spectral distribution is, within errors, in keeping with the inhomogeneously broadened phonon transition.

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“…EPR measurements of the 4 1 9 p ground state [5] have pointed out that the high lying optically pumped excited states may be investigated by observing the recovery of the fluorescent light signal after the microwave saturation pulse has been switched off.…”

Section: Introductionmentioning

confidence: 99%

Relaxation Process in U³⁺:Lacl₃ Detected by Resonant Self‐Absorption of Fluorescence

Furrer

Seiff

Pelzl

1974

Physica Status Solidi (b)

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Orbach Relaxation and Hyperfine Structure in the ExcitedE¯(E2)

Cited by 153 publications

References 29 publications

Characterization of excited electronic and vibronic states of platinum metal compounds with chelate ligands by highly frequency-resolved and time-resolved spectra

Characterization of excited electronic and vibronic states of platinum metal compounds with chelate ligands by highly frequency-resolved and time-resolved spectra

SASER action in optically excited ruby: Angular and spectral distribution

Relaxation Process in U³⁺:Lacl₃ Detected by Resonant Self‐Absorption of Fluorescence

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Orbach Relaxation and Hyperfine Structure in the ExcitedE¯(E2)

Cited by 153 publications

References 29 publications

Characterization of excited electronic and vibronic states of platinum metal compounds with chelate ligands by highly frequency-resolved and time-resolved spectra

Characterization of excited electronic and vibronic states of platinum metal compounds with chelate ligands by highly frequency-resolved and time-resolved spectra

SASER action in optically excited ruby: Angular and spectral distribution

Relaxation Process in U3+:Lacl3 Detected by Resonant Self‐Absorption of Fluorescence

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Relaxation Process in U³⁺:Lacl₃ Detected by Resonant Self‐Absorption of Fluorescence