Lasing characteristics of new coumarin-analog dyes: broadband and narrow-linewidth performance

Chen, C. H.; Fox, John L.; Duarte, F J; Ehrlich, J.

doi:10.1364/ao.27.000443

Cited by 25 publications

(7 citation statements)

References 4 publications

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“…Acridinedione derivatives are of interest in synthetic organic chemistry and because of their fluorescence and laser generation activity (Chen et al, 1998;Timpe et al, 1991Timpe et al, , 1993Ulrich et al, 1993;Dupuy et al, 1984). They are also pharmaceutical agents (Acheson, 1956;Talacki et al, 1974;Sivaraman et al, 1996;Prasad Krishna et al, 1984;Ganesh & Velmurugan, 1997;Nandi et al, 1990;Karle et al, 1980;Reddy et al, 1979;Sakore et al, 1979;Berkan et al, 2002).…”

Section: Commentmentioning

confidence: 99%

9-(4-Methoxyphenyl)-3,3,6,6-tetramethyl-10-p-tolyl-1,2,3,4,5,6,7,8,9,10-decahydroacridine-1,8-dione

Odabaşoğlu¹,

Kaya²,

Büyükgüngör³

et al. 2007

Acta Crystallogr E Struct Rep Online

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In the title compound, C31H35NO3, the central heterocyclic ring of the octahydroacridinedione system is planar while the outer two rings each adopt an envelope conformation. The buckling angle between the two halves is 8.52 (3)°, which shows the relative planarity of the decahydroacridinedione system. The dihedral angle between the planes of the two aromatic rings is 7.55 (7)°. The crystal structure is stabilized by two intermolecular C—H⋯O hydrogen bonds that generate C(10) chains and an R22(16) ring motif. A weak C—H⋯π interaction further stabilizes the structure.

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Section: Commentmentioning

confidence: 99%

9-(4-Methoxyphenyl)-3,3,6,6-tetramethyl-10-p-tolyl-1,2,3,4,5,6,7,8,9,10-decahydroacridine-1,8-dione

Odabaşoğlu¹,

Kaya²,

Büyükgüngör³

et al. 2007

Acta Crystallogr E Struct Rep Online

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“…λ ≤ ≤ nm (see Figure 8) (Duarte et al, 2006). Thus, C 545 T adds to the excellent laser performance of the family of coumarin tetramethyl laser dyes (Chen et al, 1988;Duarte, 1989). Table 2 summarizes the performance of this optically-pumped C 545 T tunable laser.…”

Section: Optically-pumped Coumarin 545 Tetramethyl Tunable Lasermentioning

confidence: 99%

Electrically-Pumped Organic-Semiconductor Coherent Emission: a Review

Duarte¹

2010

Coherence and Ultrashort Pulse Laser Emission

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“…In such an experiment, several test systems would provide for excellent case studies for simple laboratory studies at the undergraduate level. Photochromic compounds with long electronically excited state lifetimes, such as leuco derivatives, − diazenes, − stilbenes, − and coumarins − are excellent absorbers of near-UV radiation and show transient species that vary markedly across long time scales ( ca . many minutes).…”

Section: Introductionmentioning

confidence: 99%

Affordable Setup for Studying Photochemistry in Action in Undergraduate Teaching Laboratories: Principles and Applications

et al. 2020

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Molecular photochemistry is an integral field in chemistry. Despite this, it is often difficult to demonstrate an effective hands-on experiment that offers a unique opportunity to students to observe photochemistry in action. Although simple laboratory experiments which use a UV−vis wavelength lamp do provide some photochemical information, the student does not have a first-hand visual account of the evolving excited state process. In this paper, we present a simple and cost-efficient laboratory apparatus that may be used in the undergraduate research and teaching laboratories to study the in situ photochemistry of several classes of chromophores. The technique is based on pump−probe transient absorption spectroscopy. A solution containing the organic molecules of choice is placed in a portable commercial UV−vis absorption spectrometer: oxybenzone (2-hydroxy-4-methoxybenzophenone) and phenol in hexane were chosen to test the setup. The sample is then continuously irradiated via a judiciously positioned high-power UV−vis lightemitting diode to initiate the electronic excitation. The sample absorption spectrum is manually recorded at various time delays. Photokinetic data is then obtained in order to quantify the excited state reaction. We also show how accompanying electronic structure calculations may be used to determine the various photoproducts formed during the photoreaction. This joint experimental and theoretical endeavor gives students a unique opportunity to observe the evolving chemistry of a light-induced reaction and allows them to gain experience in computational chemistry when characterizing their data using contemporary electronic structure methods.

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Lasing characteristics of new coumarin-analog dyes: broadband and narrow-linewidth performance

Cited by 25 publications

References 4 publications

9-(4-Methoxyphenyl)-3,3,6,6-tetramethyl-10-p-tolyl-1,2,3,4,5,6,7,8,9,10-decahydroacridine-1,8-dione

9-(4-Methoxyphenyl)-3,3,6,6-tetramethyl-10-p-tolyl-1,2,3,4,5,6,7,8,9,10-decahydroacridine-1,8-dione

Electrically-Pumped Organic-Semiconductor Coherent Emission: a Review

Affordable Setup for Studying Photochemistry in Action in Undergraduate Teaching Laboratories: Principles and Applications

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