Electronic Absorption and Fluorescence Spectra of [2.2]Anthracenophanes

Morita, Masao; Kishi, Tohru; Tanaka, Masashi; Tanaka, Jirō; Ferguson, J.; Sakata, Yoshiteru; Misumi, Soichi; Hayashi, Tadao; Mataga, Noboru

doi:10.1246/bcsj.51.3449

Cited by 32 publications

(20 citation statements)

References 19 publications

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“…This change in vibronic lineshape is consistent with H-aggregate formation, as expected for side-by-side chromophores, and has previously been observed in cofacial anthracene dimers formed by various methods. 22,23 The change in absorption is quite different from what is observed in crystalline tetracene, where the 0-0 peak is enhanced due to J-aggregation, and a clear Davydov splitting provides a way to quantitate the intermolecular excitonic interaction. 12 The fluorescence spectrum of dimer 6 presents a broad emission band at around 535 nm, which red-shifted by about 6 nm in comparison with that of monomer 7, Fig.…”

Section: Absorption and Fluorescence Spectra In Solutionmentioning

confidence: 85%

Synthesis and photophysical properties of a “face-to-face” stacked tetracene dimer

Liu

Nichols

Shen

et al. 2015

Phys. Chem. Chem. Phys.

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A covalently linked tetracene dimer has been prepared and its molecular structure is characterized by (1)H NMR and MALDI-TOF mass spectroscopy, and elemental analysis. The minimized molecular structure reveals that the tetracene subunits in a dimer adopt a "face-to-face" stacked configuration. Its absorption spectrum differs significantly from that of the monomeric counterpart in solution, suggesting the presence of strong interactions between the two tetracene subunits. In solution, the fluorescence spectrum is dominated by a band at around 535 nm, due to an oxidative impurity. In the longer wavelength range, a short-lived lower energy emission can be identified as the intrinsic emission of the dimer. In a polystyrene matrix or at low temperatures, the lifetime of the lower energy emission lengthens and it becomes more prominent. We suggest that the interactions between the two tetracene subunits produce a short-lived, lower energy "excimer-like" state. The fluorescence decays show no observable dependence on an applied magnetic field, and no obvious evidence of significant singlet fission is found in this dimer. This research suggests that even though there are strong electronic interactions between the tetracene subunits in the dimer, singlet fission cannot be achieved efficiently, probably because the formation of "excimer-like" states competes effectively with singlet fission.

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Section: Absorption and Fluorescence Spectra In Solutionmentioning

confidence: 85%

Synthesis and photophysical properties of a “face-to-face” stacked tetracene dimer

Liu

Nichols

Shen

et al. 2015

Phys. Chem. Chem. Phys.

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“…See text for details. d The rate constants for triplet energy transfer from 3BP* to tNP and DMN determined by eqn (5)…”

mentioning

confidence: 99%

Laser flash photolysis studies on dynamic behaviour of triplet naphthalenophanes sensitized by triplet benzophenone

Yamaji¹,

Shima²,

Nishimura³

et al. 1997

Faraday Trans.

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“…It was reported that anthracene bulk crystals display distinct dual emissions from both anthracene monomers and excimers. 40,56,57 Strong excimer emission bands have also been observed in the aqueous suspension of anthracene nanoparticles. 58 In our case, the anthracene nanowires present strong monomer bands in the region of 400-550 nm.…”

Section: Resultsmentioning

confidence: 92%

Radially oriented anthracene nanowire arrays: preparation, growth mechanism, and optical fluorescence

Ang

et al. 2011

Nanoscale

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Radially oriented anthracene nanowires and their self-assembled concentric ring arrays were prepared through a facial solvent-evaporation method. The successful growth of anthracene nanowires can be attributed to a combined mechanism of molecular self-assembly facilitated by strong π-π intermolecular interactions together with evaporation-induced capillary flow and fingering instability. Their radial orientation is determined by the capillary flow; their shape (either straight or curved nanowires) is governed by the competition between the capillary and Marangoni convectional flows. The self-assembly of nanowires into large-scale concentric ring arrays can be interpreted in terms of the repeated slipping-and-sticking motions of the contact line. The high-quality crystalline anthracene nanowire arrays exhibit size-dependent fluorescence emission with high-degree anisotropy.

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Electronic Absorption and Fluorescence Spectra of [2.2]Anthracenophanes

Cited by 32 publications

References 19 publications

Synthesis and photophysical properties of a “face-to-face” stacked tetracene dimer

Synthesis and photophysical properties of a “face-to-face” stacked tetracene dimer

Laser flash photolysis studies on dynamic behaviour of triplet naphthalenophanes sensitized by triplet benzophenone

Radially oriented anthracene nanowire arrays: preparation, growth mechanism, and optical fluorescence

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