Intramolecular Charge Transfer and Solvent-Polarity Dependence of Radiative Decay Rate in Photoexcited Dinaphthylamines

1995 ◽  
Vol 99 (19) ◽  
pp. 7416-7420 ◽  
Author(s):  
Shijie Wang ◽  
Jianjian Cai ◽  
Rovshan Sadygov ◽  
Edward C. Lim
Keyword(s):  
Charge Transfer ◽  
Decay Rate ◽  
Radiative Decay ◽  
Intramolecular Charge Transfer ◽  
Solvent Polarity ◽  
Radiative Decay Rate

Theoretical Studies on Phosphorescent Materials: The Conjugation-Extended PtII Complexes

2014 ◽  
Vol 67 (10) ◽  
pp. 1522 ◽  
Author(s):  
Ai-Hua Liang ◽  
Fu-Quan Bai ◽  
Jian Wang ◽  
Jian-Bo Ma ◽  
Hong-Xing Zhang
Keyword(s):  
Charge Transfer ◽  
Decay Rate ◽  
Excited States ◽  
Rate Constants ◽  
Radiative Decay ◽  
Theoretical Study ◽  
Radiative Decay Rate ◽  
Ligand Charge Transfer ◽  
Emission Transition ◽  
Transfer Properties

A theoretical study on the PtII complex A based on a dimesitylboron (BMes2)-functionalized [Pt(C^N)(acac)] (C^N = 2-phenyl-pyridyl, acac = acetylaceton) complex, as well as three conjugation-extended analogues of the methylimidazole (C*) ligand BMes2-[Pt(C^C*)(acac)] complexes B–D is performed. Their theoretical geometries, electronic structures, emission properties, and the radiative decay rate constants (kr) were also investigated. The energy differences between the two highest occupied orbitals with dominant Pt d-orbital components (Δddocc) of D both at the ground and excited states are the smallest of all. Compared with B, the charge transfer in D possesses a marked trend towards the extended conjugated group, while C changed inconspicuously. The lowest-lying absorptions and the phosphorescence of them can be described as a mixed metal-to-ligand charge transfer (MLCT)/intra-ligand π→π* charge transfer (ILCT) and 3MLCT/3ILCT, respectively. The variation of charge transfer properties induced by extended conjugation and the radiative decay rate constants (kr) calculated revealed that D is a more efficient blue phosphorescence material with a 497 nm emission transition.

Halochromic and hydrochromic squaric acid functionalized perylene bisimide

2015 ◽  
Vol 51 (36) ◽  
pp. 7661-7664 ◽  
Author(s):  
Takeshi Maeda ◽  
Frank Würthner
Keyword(s):  
Charge Transfer ◽  
Intramolecular Charge Transfer ◽  
Solvent Polarity ◽  
Squaric Acid ◽  
Perylene Bisimide

A squaric acid functionalized perylene bisimide senses solvent polarity, pH and humidity through the intramolecular charge transfer initiated by protonation/deprotonation.

scholarly journals Precision tests of theJ/ψfrom full lattice QCD: Mass, leptonic width, and radiative decay rate toηc

2012 ◽  
Vol 86 (9) ◽  
Author(s):  
G. C. Donald ◽  
C. T. H. Davies ◽  
R. J. Dowdall ◽  
E. Follana ◽  
K. Hornbostel ◽  
...  
Keyword(s):  
Decay Rate ◽  
Lattice Qcd ◽  
Radiative Decay ◽  
Radiative Decay Rate

Radiative and non-radiative decay rate of K2SiF6:Mn4+ phosphors

2015 ◽  
Vol 3 (21) ◽  
pp. 5484-5489 ◽  
Author(s):  
Minseuk Kim ◽  
Woon Bae Park ◽  
Bokeuk Bang ◽  
Chang Hae Kim ◽  
Kee-Sun Sohn
Keyword(s):  
Decay Rate ◽  
Radiative Decay ◽  
Light Emitting Diode ◽  
Red Light ◽  
Wide Band ◽  
Radiative Decay Rate ◽  
Light Emitting ◽  
Band Type

Mn4+-activated K2SiF6 phosphors for use in light emitting diode (LED) applications have recently attracted a great deal of attention since they exhibit an advantage over conventional wide band-type red-light-emitting phosphors.

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