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Dual luminescence of polymers with grafted BF2-benzoylacetonate groups
Journal of Luminescence ( IF 3.6 ) Pub Date : 2020-04-01 , DOI: 10.1016/j.jlumin.2019.117024
Elena V. Fedorenko , Anatolii G. Mirochnik , Evgeny B. Merkulov

Abstract Polymers with varied contents of BF2-benzoylacetonate (BF2-BAc) groups have been synthesized by the reaction of double acylation of copolymers of methyl methacrylate and styrene. The synthesized polymers have exhibited a dual luminescence: at λex = 365 nm, an intensive blue monomers luminescence with a maximum at 390 nm was observed, while at λex = 400 nm, an aquamarine luminescence of aggregates was registered at 450 nm. The polymer, in which the content of BF2-BAc groups equaled to 2.7%, has formed two modifications with different optical properties. Upon mechanical activation (grinding) and melting, one observes a transfer from the modification, in which BF2-BAc groups form aggregates, to the amorphous modification. Upon UV-irradiation of the amorphous samples, there occurs the formation of aggregates and excimers based on them present in the initial polymer. There is a possibility that the synthesized polymers can be used in creating smart materials applied in sensors, data recording and storage, rewritable carriers, and optoelectronic devices.

中文翻译:

具有接枝 BF2-苯甲酰丙酮酸酯基团的聚合物的双发光

摘要 通过甲基丙烯酸甲酯和苯乙烯共聚物的双酰化反应合成了具有不同BF2-苯甲酰丙酮酸酯(BF2-BAc)基团含量的聚合物。合成的聚合物显示出双重发光:在 λex = 365 nm 处,观察到强烈的蓝色单体发光,最大值在 390 nm,而在 λex = 400 nm,聚集体的海蓝宝石发光在 450 nm 处记录。BF2-BAc基团含量为2.7%的聚合物形成了两种不同光学性质的变体。在机械活化(研磨)和熔化后,人们观察到从 BF2-BAc 基团形成聚集体的改性转移到无定形改性。在对无定形样品进行紫外线照射后,基于初始聚合物中存在的聚集体和准分子,发生聚集体和准分子的形成。合成的聚合物有可能用于制造应用于传感器、数据记录和存储、可重写载体和光电设备的智能材料。
更新日期:2020-04-01
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