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Upstream product

• 20646-38-2 Dihydrochloride Sal t of N-(4-(4?'-guanidinophenyl)phenylmethylene)-4-aminooctanamide 
• 62-53-3 aniline 
• 108-86-1 bromobenzene 
• 6393-01-7 2,5-Dimethyl-1,4-phenylenediamine 

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• 1151857-37-2 C₄₆H₃₆N₂O₂ 

Relevant academic research and scientific papers

Heterocyclic compound and an organic light emitting device comprising the same

A heterocyclic compound represented by Formula 1 below: X is selected from the group consisting of nitrogen, boron, and phosphorous; and Ar1, Ar2, Ar3 and Ar4 are each independently selected from the group consi

The class II/III transition electron transfer on an infrared vibrational time scale for N,Na?2-diphenyl- 1,4-phenylenediamine structures

Intramolecular electron transfer (ET) within the class II/III transition for the mixed-valence state of N,Na?2-diphenyl-1,4-phenylenediamine (PDA) derivatives which were substituted in the center or the outer phenyl ring and N,Na?2-diphenylbenzidine (BZ) was examined. Each compound showed two reversible redox couples. The splitting of the redox waves, ??E, is related to the interaction intensity between redox sites. The introduction of a substitutent into the central phenylene ring of the PDAs resulted in a decrease in ??E. A similar result was noted for the expansion of the distance between the redox centers such as in BZ. In opposition, the ??E of N,Na?2-bis(2,6-dimethylphenyl)-1,4-phenylenediamine (2,6-DMPDA) as a compound with substituents introduced into the outer phenyl rings was spread. The mixed-valence state of these compounds also exhibited an intervalence charge transfer (IV-CT) band in the near-IR region which provided the determination of the Marcus reorganization energy (??), the electron coupling (V), the thermal ET barrier (??G*), and the electron-transfer rate (k th) using the Marcus-Hush theory. We first confirmed the electron-transfer rate of PDA derivatives in the class II/III transition state by two methods. The v(N-H) stretching vibrational spectra of the mixed-valence states were analyzed by a Bloch-type equation analysis using variable-temperature IR spectra measurements which were to be in good agreement with the those obtained from the Marcus-Hush theory. On the basis of this approach, the electron-transfer rate of PDA was determined to be 8.2 ?? 1011 s-1 at 298 K, yielding ??Ga?? = 420 cm -1 (the activation free energy from the Eyring plot) for the und erlying process.