期刊
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
卷 279, 期 -, 页码 -出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.saa.2022.121437
关键词
Rhodamine b; Irradiation; Tautomerisation; UV absorber; Light fastness; Non-radioactive
类别
资金
- Industrial Technology Innovation Program - Ministry of Trade, Industry & Energy (MOTIE, Republic of Korea) [20004439, 20010470]
- Korea Evaluation Institute of Industrial Technology (KEIT) [20004439, 20010470] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
In this paper, a new class of chemically linked UV absorber XU2 & XU3 was prepared and their photophysical, chemical properties and substrate durability were investigated. The synthesized XU2 & XU3 showed good absorbance and emission band maxima at all solvents and pH mediums, making them potential UV protectants.
In this paper, we prepared a new class of chemically linked UV absorber XU2 & XU3, and their photophysical, chemical properties and substrate durability were investigated. Spectroscopic behavior at various solvent and pH levels for this dye solution has been evaluated. Successfully designed an open ring form of xanthene moiety, linked a UV absorber to it, and made XU2 & XU3 that have shown good absorbance and emission band maxima at all solvents and pH mediums. Further, the found UV-Vis absorbance band maxima (lambda(max)), PL emission maxima (lambda(em)), molar extinction coefficient (epsilon(max)) and Stokes shifts (delta nu ST) when compared to commercially available dye 1. The synthesised XU2 & XU3 have shown brilliant results from exposed UV light at irradiation processing time, due to the light energy passes through the molecule by keto-enol tautomerisation between phenolic hydrogen and carbonyl carbon like a six-member ring. So it can be acted as radioless behaviour in the visible region, and it can relax the energy without any assistance. Hence, the UV absorber has protected the compound like a UV Resistance.
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