Study on Fluorescence Intensity Determination of Rare Earth Europium Complexes UV-Photochromic Inks
The paper discussed the preparation of rare earth europium complexes ultraviolet rays (UV)photochromic ink and the influences of factors, such as europium complexes using a rare earth ternary complexof Eu ion with 3-benzoylbenzoic acid and phenathrolinephen Eu(BA)3Phen content upon printing inkformula. In the experiment, we utilized fluorescence spectrophotometer to make quantitative determinationsof the relative fluorescence intensity of rare earth europium complexes and different proportions of UVphotochromic ink samples. Besides, we made further analysis and studied their relative fluorescence intensityand fluorescence spectrum. Printing ink samples were made in the offset printability tester with the pressureof 200N, 500N, or 800N.The results showed that: printing pressure had a little influence on the fluorescenceintensity of samples, for instance, with the 500N pressure, the relative fluorescence intensity could be easilytested; with rare earth europium complexes proportion increasing, the relative fluorescence intensity becameenhanced. In this paper, we studied the relative fluorescence intensity for different proportions of photochromicink. It demonstrated that through the quantitative determination of the relative fluorescence intensity ofsamples, the best content ranges for adding rare earth europium complexes was between 8.5% and 9.5%.From the fluorescence spectrum, we got conclusion that photochromic ink reached the crest of 616.8nm.
Juan Lan Cheng Sun Xiaoxiu Hao Liqiang Huang Shiying Song
Tianjin University of Science and Technology TUST Tianjin, China Tianjin University of Science and Technology and Tianjin Professional University TUST and TPU Tianji Tianjin Professional University Tianjin University of Science and Technology TUST
国际会议
The 17th IAPRI World Conference on Packaging(第17届世界包装大会)
天津
英文
337-340
2010-10-12（万方平台首次上网日期，不代表论文的发表时间）