Abd-El-Aziz Alaa S, Agatemor Christian, Etkin Nola, Wagner Brian
Department of Chemistry, University of Prince Edward Island, 550 University Avenue, Charlottetown, Prince Edward Island, C1A 4P3, Canada.
Macromol Rapid Commun. 2016 Aug;37(15):1235-41. doi: 10.1002/marc.201600207. Epub 2016 May 25.
Photoactive materials are actively researched, piloting breakthroughs that have enriched fundamental understanding of science, and have led to real applications. Tetraphenylethene, a photoactive molecule that is of interest from fundamental and applied perspectives, features photochemical properties that are not exploited in the design of photoactive, dual-emissive materials. Here, tetraphenylethene-based, dual-emissive dendrimers are constructed via a synthetic approach that involves a photochemical reaction that exploits the photochemistry of tetraphenylethene. These dendrimers are emissive in solution and in the aggregate state with tunable dual emissions at 368 and 469 nm. The photochemical reaction also tunes the size of the aggregates, increasing the size after UV irradiation. The reported synthetic strategy is a direct and facile approach to accessing dual-emissive macromolecules, especially tetraphenylethene-based systems for real applications.
光活性材料正在积极研究中，正在进行的突破丰富了对科学的基本理解，并带来了实际应用。四苯乙烯是一种从基础和应用角度来看都很有趣的光活性分子，其光化学性质在光活性双发射材料的设计中尚未得到利用。在此，通过一种涉及利用四苯乙烯光化学的光化学反应的合成方法，构建了基于四苯乙烯的双发射树枝状大分子。这些树枝状大分子在溶液和聚集态下均有发射，在368和469 nm处具有可调谐的双发射。光化学反应还调节聚集体的大小，紫外线照射后尺寸增大。所报道的合成策略是一种直接且简便的方法，可用于制备双发射大分子，特别是用于实际应用的基于四苯乙烯的体系。
