Synthesis and Structural Characterization of a Novel Symmetrical 2,10-Bis-Styryl-1-Benzopyrylium Dye
作者:Luís Cruz、Vânia Gomes、Nuno Mateus、Victor de Freitas
DOI:10.1055/s-0036-1591978
日期:2018.6
A novel symmetrical 2,10-bis-styryl-1-benzopyrylium dye was synthesized through two steps: In the first reaction an aldol condensation between 2,4,6-trihydroxybenzaldehyde and 3,4-dihydroxymethylstyrylketone gave 5,7,3′,4′-tetrahydroxy-2-styryl-1-benzopyrylium; and in the second step this latter reacted with the same ketone by a cycloaddition reaction yielding the symmetrical 2,10-bis(3,4-dihydr
通过两个步骤合成了一种新型对称 2,10-双-苯乙烯基-1-苯并吡喃染料:在第一个反应中,2,4,6-三羟基苯甲醛和 3,4-二羟甲基苯乙烯基酮之间的醛醇缩合得到 5,7,3', 4'-四羟基-2-苯乙烯基-1-苯并吡喃鎓;在第二步中,后者通过环加成反应与相同的酮反应,产生对称的 2,10-双(3,4-二羟基苯乙烯基)-吡喃并-7-羟基-1-苯并吡喃鎓。该染料通过 LC-DAD/ESI-MS 和 NMR 一维和二维技术进行了充分表征,并提出了形成途径。获得的新型染料在其组成中显示出扩展的 π 共轭(λmax 556 nm)和邻苯二酚基团,这对于作为染料敏感太阳能电池(DSSC)的光敏剂的应用非常重要。