Photostability of pyrromethene 567 laser dye solutions via photoluminescence measurements Export

@article{citeulike:1545049, abstract = {The effects of antioxidant addition and concentration on the photostability of methanol solutions of the pyrromethene laser dye 1,3,5,7,8-pentamethyl-2,6-diethylpyrromethene-difluoroborate complex (PM-567) were investigated. Specifically, methanol solutions of PM-567 were irradiated with 532 nm Nd:YAG laser pulses (2nd harmonic), and the photoluminescence measured as a function of accumulated laser pulses. The decrease in the photoluminescence-to-initial photoluminescence ratio with accumulated laser pulses was measured as a function of antioxidant addition and dye concentration. The addition of antioxidants, 1,4-diazabicyclo[2.2.2] octane (DABCO) and sodium azide (NaN3), resulted in a dramatic enhancement of photostability, whereas only nominal enhancement was observed upon n-propyl gallate addition. Over the concentration range 6x105 to 5x104 M, dye-photostability was virtually concentration independent, with only a small enhancement at lower concentrations. The normalized photostability, the half-life of accumulated energy per mole of dye, could not explain the concentration dependence of photostability. Reasons why the normalized photostability fails to explain the concentration trends are discussed.}, author = {Mackey, Michelle S. and Sisk, Wade N.}, citeulike-article-id = {1545049}, citeulike-linkout-0 = {http://dx.doi.org/10.1016/S0143-7208(01)00060-2}, citeulike-linkout-1 = {http://www.sciencedirect.com/science/article/B6TFY-44D2CGX-3/2/cb8eef0bfb78f95c4415fef91acc7770}, doi = {10.1016/S0143-7208(01)00060-2}, journal = {Dyes and Pigments}, keywords = {567nm, dpibf, dyes, lasers, photostability, pyrromethene}, month = {November}, number = {2-3}, pages = {79--85}, posted-at = {2007-08-09 05:56:36}, priority = {2}, title = {Photostability of pyrromethene 567 laser dye solutions via photoluminescence measurements}, url = {http://dx.doi.org/10.1016/S0143-7208(01)00060-2}, volume = {51}, year = {2001} }

TY - JOUR ID - citeulike:1545049 L3 - citeulike-article-id:1545049 N2 - The effects of antioxidant addition and concentration on the photostability of methanol solutions of the pyrromethene laser dye 1,3,5,7,8-pentamethyl-2,6-diethylpyrromethene-difluoroborate complex (PM-567) were investigated. Specifically, methanol solutions of PM-567 were irradiated with 532 nm Nd:YAG laser pulses (2nd harmonic), and the photoluminescence measured as a function of accumulated laser pulses. The decrease in the photoluminescence-to-initial photoluminescence ratio with accumulated laser pulses was measured as a function of antioxidant addition and dye concentration. The addition of antioxidants, 1,4-diazabicyclo[2.2.2] octane (DABCO) and sodium azide (NaN3), resulted in a dramatic enhancement of photostability, whereas only nominal enhancement was observed upon n-propyl gallate addition. Over the concentration range 6x105 to 5x104 M, dye-photostability was virtually concentration independent, with only a small enhancement at lower concentrations. The normalized photostability, the half-life of accumulated energy per mole of dye, could not explain the concentration dependence of photostability. Reasons why the normalized photostability fails to explain the concentration trends are discussed. IS - 2-3 JF - Dyes and Pigments EP - 85 TI - Photostability of pyrromethene 567 laser dye solutions via photoluminescence measurements VL - 51 SP - 79 KW - 567nm KW - dpibf KW - dyes KW - lasers KW - photostability KW - pyrromethene AU - Mackey, Michelle AU - Sisk, Wade PY - 2001/11// UR - http://dx.doi.org/10.1016/S0143-7208(01)00060-2 ER -