Singlet–singlet intermolecular optical energy transfer from naphthalene to benzophenone in the vapor phase

Bayrakçeken, Fuat

doi:10.1016/j.saa.2007.12.040

Cited by 1 publication

(1 citation statement)

References 24 publications

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“…Molecular collisions also lead to the singlet energy transfer from aromatic hydrocarbons to the ketone, enhancing 3-pentanone's fluorescence intensity. Bayrakceken [32] studied the intermolecular collisional energy transfer (IMCET) process, verified that this process is a radiation-less energy transfer from donor's singlet to acceptor's singlet, and labeled this behavior as sensitized fluorescence. He summarized some characteristics of acceptors and donors: 1) for the energy of the first singlet excited state E S1 , 124212-7 E S1 (donor) is larger than E S1 (acceptor), where the overlap of donor emission and acceptor absorption occurs; 2) the donor fluorescence is quenched and the acceptor fluorescence is sensitized.…”

Section: The Effect Of Tracersmentioning

confidence: 97%

Absorption, quenching, and enhancement by tracer in acetone/toluene laser-induced fluorescence*

Chang¹,

Yu²,

Peng³

et al. 2020

Chinese Phys. B

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To measure the equivalent ratio distribution of the two-stage lean premixed (DLP) flame, we propose using acetone/toluene planar laser-induced fluorescence (PLIF) technology to simultaneously measure the concentrations of the two components. Appropriate excitation laser wavelength and filters are used to assess the influence of acetone and toluene on each other’s fluorescence signal at room temperature. Experimental results show that acetone has a strong absorption effect on toluene’s fluorescence signal, the effective absorption cross-section is 5.77 × 10−20 cm−2. Acetone has an obvious quenching effect on the toluene fluorescence signal, and the Stern–Volmer coefficient is 0.50 kPa−1. The collisions between the molecules of toluene and acetone will lead to the enhancement of the fluorescence signal of acetone, and the enhancement coefficient is exponential with the acetone’s concentration. The quantitative relationship between the fluorescence intensity and the concentrations of the two tracers is obtained by establishing the photophysical model of toluene and acetone’s fluorescence signals.

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Section: The Effect Of Tracersmentioning

confidence: 97%