Asiri Abdullah M, Al-Dies Al-Anood M, Khan Salman A
Chemistry Department, Faculty of Science, King Abdulaziz University, P.O. Box 80203, Jeddah, 21589, Saudi Arabia.
Center of Excellence for Advanced Materials Research (CEAMR), King Abdulaziz University, P.O. Box 80203, Jeddah, 21589, Saudi Arabia.
J Fluoresc. 2017 Jul;27(4):1487-1494. doi: 10.1007/s10895-017-2088-0. Epub 2017 Apr 26.
(2E)-1-(2,5-dimethylfuran-3-yl)-3-(9-ethyl-9H-carbazol-3-yl)prop-2-en-1-one (DEPO) was prepared by the reaction of 9-ethyl-9H-carbazole-3-carbaldehyde with 1-(2,5-dimethylfuran-3-yl)ethanone under microwave irradiation. The structure of DEPO was established experimentally by EI-MS, FT-IR, H and C NMR spectral studies. Electronic absorption and emission spectra of DEPO were studied in different solvents on the basis of polarities, and the obtain data were used to determine the solvatochromic properties such as extinction coefficient, oscillator strength, transition dipole moment, stokes shift, fluorescence quantum yield and photochemical quantum yield. Photochemical quantum yield (Φ ) of DEPO dye was determined in different solvent. The dye comparatively photostable in DMSO but undergoes photodecomposition in chloro methane solvents. The DEPO dye may be use as probe or quencher to determine critical micelle concentration (CMC) of cetyltri methyl ammonium bromide (CTAB) and sodium dodecyl sulfate (SDS).
通过9-乙基-9H-咔唑-3-甲醛与1-(2,5-二甲基呋喃-3-基)乙酮在微波辐射下反应制备了(2E)-1-(2,5-二甲基呋喃-3-基)-3-(9-乙基-9H-咔唑-3-基)丙-2-烯-1-酮(DEPO)。通过电子轰击质谱(EI-MS)、傅里叶变换红外光谱(FT-IR)、氢核磁共振(H NMR)和碳核磁共振(C NMR)光谱研究从实验上确定了DEPO的结构。基于极性在不同溶剂中研究了DEPO的电子吸收光谱和发射光谱，所得数据用于确定诸如消光系数、振子强度、跃迁偶极矩、斯托克斯位移、荧光量子产率和光化学量子产率等溶剂化显色性质。在不同溶剂中测定了DEPO染料的光化学量子产率(Φ)。该染料在二甲基亚砜(DMSO)中相对光稳定，但在氯甲烷溶剂中会发生光分解。DEPO染料可用作探针或猝灭剂来测定十六烷基三甲基溴化铵(CTAB)和十二烷基硫酸钠(SDS)的临界胶束浓度(CMC)。
