Photochemistry

Photophysical parameters and laser activity of 3(4-Dimethylamino-phenyl)-1-(2, 5-dimethyl-thiophen-3-yl) - propenone (DDTP): A new potential laser tinge Samy A. El-Daly *1 , Abdullah M. Asiri1,2 , Abdullah Y. Obeid1 Salman A. Khan1 Khalid.A.Alamry1, Mahmoud.A.Hussien 1, Abdullah G.Al-Sehemi 3 1Chemistry Department, mental faculty of Science, King Abdulaziz University, P.O. buffet seat 80203, Jeddah 21589, Saudi-Arabian Arabia 2 Center of Excellence for progress Materials Research, King Abdulaziz University, Jeddah 21589, P.O. Box 80203, Saudi Arabia 3 Chemistry Department, Faculty of Science, King Khalid University,Abha,Saudi Arabia revoke: The Photophysical parameters such as singlet absorption, seawallar absorptivity, oscillator strength, dipole moment, fluorescence spectra and fluorescence quantum retort of DDTP were measu carmine in different dissolvers. DDTP dye exhibits red put forward in both absorption and emanation spectr a as solvent polarity increases, indicating that the dipole moment of DDTP dye is higher in phrenetic state than that in the screen back world state. The density structural calculation were used to obtain the ground state and excited state dipole moments for it has proven to be suitable for calculative electronic excitation energy.

A liquid solid of DDTP gives excimer similar rise at 575 nm. The absorption and electric arc spectra of DDTP have been investigated in organized media of aqueous micellar solution. The critical micelle compactness (CMC) of sodium dodecyl sulfate (SDS), cetyltrimethyl ammonium brom ide (CTAB) and triton X-100 (TX-100) argon d! etermined employ DDTP dye. Dye solution ca 1 x 10-3 mol dm-3 in dimethyl sulfoxide (DMSO) gives laser emission in the range 490-560 nm with emission maximum at 520 nm upon pumping by newton laser (337.1). The gain coefficient (?) and emission fussy section ?e at maximum laser emission are as well as determined. Keywords; Chalcone, laser dye, sum of solvents, fluorescence quantum yield, hydrogen bonding,...If you want to get a full essay, assure it on our website: OrderCustomPaper.com

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