Electronic spectra of M(bipy)2+3 complexions (M = Fe, Ru and Os)

Felix, F. W.; Ferguson, J.; Güdel, Hans U.; Lüdi, A.

doi:10.1016/0009-2614(79)80432-7

Cited by 102 publications

(60 citation statements)

References 20 publications

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“…22). Similar spectra have already been reported in part by other investigators (e. g., [ 161,288,290]). Like in [Ru(bpy)3] 2+ (see Fig.…”

Section: [Os(bpy)~] Z+supporting

confidence: 75%

“…This is even valid, if all d-orbital contributions are neglected. The absorption structures below = 28000 cm -1 (~ 360 nm) down to = 15000 cm -~ (~ 670 nm) are in general agreement assigned to Os5d-bpyrr* ~MLCT and 3MLCT transitions from the singlet ground state [123,126,136,153,154,161,[285][286][287][288][289][290][291][292][293][294][295]. The emission with its peak maximum near 14000 cm -~ (L-715 nm) results -also in general agreement -from a number of low-lying states being largely of 3MLCT character [34-38, 123, 126, 136, 153, 154, 161, 285-295].…”

Section: [Os(bpy)~] Z+mentioning

confidence: 50%

“…These have been explored with regard to many interesting respects (e. g., see [123,136,153,154,161,[284][285][286][287][288][289][290][291][292]). However, reports on well-resolved spectra which display detailed information about the lowest excited states are only rarely found ( [34-38, 83, 92, 98, 104, 126, 293] and [ t44, 192, 294, 295]).…”

Section: [Os(bpy)~] Z+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

Topics in Current Chemistry

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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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“…22). Similar spectra have already been reported in part by other investigators (e. g., [ 161,288,290]). Like in [Ru(bpy)3] 2+ (see Fig.…”

Section: [Os(bpy)~] Z+supporting

confidence: 75%

Section: [Os(bpy)~] Z+mentioning

confidence: 50%

Section: [Os(bpy)~] Z+mentioning

confidence: 99%

See 1 more Smart Citation

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

Topics in Current Chemistry

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“…OBY doped materials were grown from the same solvent by adding a small amount of Os(bpY)~(PF6)2 and concentrations were determined from the known absorbance of OBY. [15] The crystal used haa a concentration of 0.25 mole percent OBY.…”

Section: Methodsmentioning

confidence: 99%

MAGNETIC FIELD EFFECTS IN THE LUMINESCENCE OF THE Ru(bpY)3(PF6)2 DOPED WITH Os(bpy)32+

Krausz

Moran

1987

J. Magn. Soc. Jpn.

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MagnetiC field and temperature dependent «10 K) luminescence from both RU(bPY)3 2 + (RBY) of the host material, and the OS(bPY)3 2 + (OBY) dopant, are reported as a function of the orientation of B. Differences are seen for El IB and El B, little effect is seen for BI I~. Strong energy transfer previously reported between RBY and OBY is seen to be dependent on the applied magnetic field. OBY luminescence has more detailed fine structure, first seen here, with some similarities but striking differences to the weak structure seen for RBY in the PF6 host. A marked triplet structure, with -35 cm-1 spacing, is seen throughout the spectrum. The triplet has two origin patterns spaced by 7±1 cm-1 •. The two higher energy components of the triplet pattern move (+)1 cm-1 at 5T (B1 ~). Of the two triplet patterns, only the lower energy set has a strongly enhanced intenSity (x400) for B(4T)1 lE at 1.4 K. The phonon structure built upon these origins is analysed.

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“…The situation is further complicated because Os(II) polypyridyl complexes show 3 MLCT transitions of appreciable intensity. 12,27,28 The resonance Raman spectra of C at a series of exc are shown in Fig. 3(c); band positions are presented in Table 1.…”

Section: Resonance Raman Spectroscopic Analysis: C and Dmentioning

confidence: 99%

Revealing the chromophoric composition of multichromophoric polypyridyl complexes of Re(I) and Os(II): a resonance Raman study

Flood

Girling

Gordon

et al. 2002

J Raman Spectroscopy

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Several binuclear Re(I) and Re(I)Os(II) complexes with polypyridyl bridging ligands, 6,7-dimethyl-2,3-di(2-pyridyl)quinoxaline (dpqMe 2 ) and [2,3-a:3 ,2 -c]dipyrido-6,7-dimethylphenazine (ppbMe 2 ), were synthesized and studied. The visible region of the electronic absorption spectrum is dominated by a single metal-to-ligand charge-transfer band (ca 600 nm) and a dpqMe 2 -or ppbMe 2 -based ligand-centred band (ca 400 nm). The resonance Raman spectra of these complexes were recorded at several excitation wavelengths. Analysis of the resonance Raman spectra identified a number of strongly enhanced chromophore-specific signatures with excitation wavelengths coincident with the main absorption bands, and weakly enhanced chromophore-specific signatures at intermediate excitation wavelengths. Resonance Raman excitation profiles (RREPs) are presented for selected marker bands. Analysis of the chromophore-specific signatures and the RREPs allowed a more complete assignment of the features in the electronic absorption spectra to be made.

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Electronic spectra of M(bipy)2+3 complexions (M = Fe, Ru and Os)

Cited by 102 publications

References 20 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

MAGNETIC FIELD EFFECTS IN THE LUMINESCENCE OF THE Ru(bpY)3(PF6)2 DOPED WITH Os(bpy)32+

Revealing the chromophoric composition of multichromophoric polypyridyl complexes of Re(I) and Os(II): a resonance Raman study

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