Ultraviolet light absorber with low surface energy: synthesis and characterization |
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| Authors: | Yuanpeng Liang Bin Xiang Chao Liu Xiangdong Zhou Dan Wang Shan Song Genghua Bai Qi An Quehong Huang Shujun Chen Xuefeng Wei |
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| Institution: | 1. College of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400044, PR China;2. Department of Medicinal Chemistry, College of Pharmacy, Third Military Medical University, Chongqing 400038, PR China;3. Chongqing Sanxia Paints Company Limited, Chongqing 402260, PR China |
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| Abstract: | Novel fluorine-containing ultraviolet absorbers (FBPs) with low surface energy were successfully synthesized based on 2,4-dihydroxy benzophenone (BP-1), and their structures were characterized by 1H NMR, 13C NMR, FTIR, and HRMS. UV absorption of FBPs was studied in 10−4 M dichloromethane (CH2Cl2), which demonstrated the superior UV absorption capability of FBPs (ca. ?=1.7×104 to 2.2×104 at λmax) over the matrix (?=1.7×104 at λmax). Quantum chemistry calculation was performed to investigate the stable structure and UV electronic absorption bands of FBPs. The surface chemistry information of high-chlorinated polyethylene (HCPE) coating films embedded with ultraviolet absorbers (UVAs) was given by X-ray photoelectron spectroscopy (XPS) and contact angle measurement. The results show that the surface enrichment capability of FBPs is remarkably better than traditional UVAs (including BP-1, BP-3, BP-12) because of the low surface energy properties of FBPs. |
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| Keywords: | Low surface energy Ultraviolet light absorber DFT TD DFT XPS Contact angle |
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