Donor-acceptor complexes of singlet excited states of aromatic hydrocarbons with aliphatic amines

Kuz’min, M. G.; Guseva, L. N.

doi:10.1016/0009-2614(69)80050-3

Cited by 58 publications

(17 citation statements)

References 4 publications

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“…The investigations of naphthalenophanes (1)(2)(3)(4)(5)(6)(7)(8)(9)(10)(11)(12), naphthalenoparacyclophanes (13)(14)(15), and fluorenophanes (17)(18) indicate that in the excited singlet state, as well as in the excited triplet state, the 1T-'IT interactions between two arenes are the highest if their planes are parallel and the maximal number of their sixmembered rings are completely eclipsed. This geometry enables maximal overlap between the single pairs of carbon 2P.…”

Section: Discussionmentioning

confidence: 99%

“…The electronic ground state usually is attractive only if some charge transfer is induced between electron-donor and electron-acceptor systems (5). A similar n-1I" interaction between a non bonding nitrogen electron pair and aromatic 11" electrons is involved in the fonnation of amine-arene exciplexes (6)(7)(8) and in the photoreduction of arenes by amines (9,10). The classic example for the 11"-11" electron interaction between polycyclic arenes is the pyrene excimer (11).…”

Section: It-it-interaction Between Arenesmentioning

confidence: 99%

“…UV absorption spectra of21, 22 Compared with the naphthalenophanes (1)(2)(3)(4)(5)(6)(7)(8)(9)(10)(11)(12), these values correspond to 1f-1f interactions of moderate size. The red shifts observed for the etheno-bridged cyclophanes (21 and 22) are much stronger; they reach 6500 cm -1 in 21 and the enormous value of 10,500 cm -1 in 22.…”

Section: 50815)mentioning

confidence: 99%

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Electronic Interactions Between Polycyclic Arenes in Cyclophanes

Haenel

Schweitzer

1987

Advances in Chemistry

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Section: Discussionmentioning

confidence: 99%

Section: It-it-interaction Between Arenesmentioning

confidence: 99%

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Electronic Interactions Between Polycyclic Arenes in Cyclophanes

Haenel

Schweitzer

1987

Advances in Chemistry

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“…According to the conventional kinetic scheme of exciplex formation [22,23] the fluorescence of both parent excited molecule 1 A*, IðtÞ, and exciplex 1 (A Àz D þz )*, I 0 ðtÞ, can be described by twoexponential functions [24,25] (Scheme 1)…”

Section: Resultsmentioning

confidence: 99%

Lifetimes of partial charge transfer exciplexes of 9-cyanophenanthrene and 9-cyanoanthracene

Dolotova

Dogadkin

Соболева

et al. 2003

Chemical Physics Letters

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The fluorescence decays of several exciplexes with partial charge transfer have been investigated in solvents of various polarity. The measured lifetimes are found to be in reasonable agreement with the activation enthalpy and entropy of exciplex decay obtained earlier from the temperature dependence of the exciplex emission quantum yields. For exciplexes with 9-cyanophenanthrene substantial contribution of the higher local excited state into the exciplex electronic structure is found and borrowed intensity effect enhances the exciplex emission rate constants.

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“…In the presence of tertiary aliphatic amines several aromatic compounds show fluorescence quenching and exciplex emission [1][2][3][4][5][6][7][8][9][10][11]. With naphtylalkylamines [12,13] and anthrylalkylamines [14] intramolecular exciplex formation was observed.…”

Section: Introductionmentioning

confidence: 99%

Separation into polar and hydrogen-bonding factors of the effects of alcohols on the emission spectrum of 4-phenyl-1-N,N-dimethylaminobutane in THF

Xie¹,

Nakamura²,

Sueishi³

et al. 2004

Journal of Photochemistry and Photobiology A: Chemistry

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The effects of the additions of protic and aprotic polar solvents on the emission spectrum of 4-phenyl-1-N,N-dimethylaminobutane (PDAB) in THF have been studied under conditions of steady-state illumination. The fluorescence spectrum of PDAB in THF was reported to consist of three component bands (band A at 285 nm (fluorescence of the phenyl group), band B at 343 nm (fluorescence of the amino group) and band C at 385 nm (emission from an intramolecular exciplex)). The intensities of bands B and C decreased with increasing solvent polarity. They also decreased owing to the hydrogen-bonding interaction between the amino group in PDAB and protic solvents, but in this case the intensity of band A was found to increase. Acetonitrile has only a polar effect and trichloroacetic acid only a hydrogen-bonding (or protonation) effect, while alcohols have both effects. The equilibrium constants for the formation of intermolecular hydrogen-bonded complexes of the amino group with alcohols were estimated from the intensity change of band A. The hydrogen-bonding and polar effects of alcohols on the intensities of bands B and C could be separately evaluated. The decrease in the intensities of bands B and C with increasing solvent polarity in THF-AN and THF-alcohol mixtures is considered to be caused by the conversion of the exciplex to an ion-pair enhanced by the increase in solvent polarity.

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Donor-acceptor complexes of singlet excited states of aromatic hydrocarbons with aliphatic amines

Cited by 58 publications

References 4 publications

Electronic Interactions Between Polycyclic Arenes in Cyclophanes

Electronic Interactions Between Polycyclic Arenes in Cyclophanes

Lifetimes of partial charge transfer exciplexes of 9-cyanophenanthrene and 9-cyanoanthracene

Separation into polar and hydrogen-bonding factors of the effects of alcohols on the emission spectrum of 4-phenyl-1-N,N-dimethylaminobutane in THF

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