Regeneration of a Large Cold Trap

Takahashi, Katsuro; Himeno, Yoshiaki; Takahashi, Nobutomo; Takahashi, June; Iguchi, Tatsuro

doi:10.13182/nt81-a32772

Cited by 3 publications

(1 citation statement)

References 2 publications

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“…Elemental analyses were conducted by NuMega Resonance Laboratories, Inc. in San Diego, California. The diimine ligands 3-phenyl-1,10phenanthroline, 3,8-diphenyl-1,10-phenanthroline, 29 3,8-bis(phenylethynyl)-1,10phenanthroline, 30 3-(pyren-1-yl)-1,10-phenanthroline, 31 3,8-di(pyren-1-yl)-1,10phenanthroline 32 were prepared according to the reported procedures, and the synthetic routes are depicted in ESI Scheme S1. The iridium precursor [Ir(phen) 2 OTf 2 ]OTf was prepared following the reported method.…”

Section: Synthesis and Characterizationmentioning

confidence: 99%

Heteroleptic Ir(III)N₆ Complexes with Long-Lived Triplet Excited States and in Vitro Photobiological Activities

Wang

Monro

Cui

et al. 2019

ACS Appl. Mater. Interfaces

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A series of cationic heteroleptic iridium(III) complexes bearing tris-diimine ligands [Ir(phen) 2 (Rphen)] 3+ (R-phen = phenanthroline (1), 3,8-diphenylphenanthroline (2), 3,8dipyrenylphenanthroline (3), 3-phenylphenanthroline (4), 3-pyrenylphenanthroline (5), and 3,8diphenylethynylphenanthroline (6)) were synthesized and characterized. These complexes possessed phen ligand-localized 1 π,π* transitions below 300 nm, and charge transfer ( 1 CT) and/or 1 π,π* transitions between 300 and 520 nm. In 1, 2, 4, and 6, the low-energy bands were mixed 1 CT/ 1 π,π*. However, the increased π-donating ability of the pyrenyl substituent(s) in 3 and 5 split the low-energy bands into a pyrene-based 1 π,π* transition at 300-380 nm and an intraligand charge transfer ( 1 ILCT) transition at 380-520 nm. All complexes were emissive at room temperature in CH 3 CN, but the parentage of the emitting state varied depending on the R substituent(s). Complex 1 exhibited predominantly phen ligand-localized 3 π,π* emission mixed with metal-to-ligand charge transfer ( 3 MLCT) character, while the emission of 2, 4, and 6 was predominantly from the excited-state with 3 π,π*/ 3 ILCT/ 3 MLCT character. The emission from 3 and 5 was dominated by pyrene-based 3 π,π* states mixed with 3 ILCT character. The different natures of the lowest triplet excited states were also reflected by the different spectral features and *

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Section: Synthesis and Characterizationmentioning

confidence: 99%