Supramolecular luminescent system based on 2-cyano-3(4-(diphenylamino)phenyl) acrylic acid: Chiral luminescent host for selective CH3CN sensor
作者:Savarimuthu Philip Anthony、Colm Delaney、Sunil Varughese、Longsheng Wang、Sylvia M. Draper
DOI:10.1039/c1ce05187c
日期:——
New supramolecular luminescent host systems based on 2-cyano-3(4-(diphenylamino)phenyl) acrylic acid (CDPA), a triphenylamine based luminescent acid, and amines (propylamine (1), dimethylaminopyridine, DMAP (2) and (1S,2R)-2-amino-1,2-diphenylethanol (3)) were prepared using a supramolecular approach. For each, the inclusion of amines in the CDPA matrix led to blue shifts in the solid state luminescence. 1 forms a CH3CN-selective, luminescent host and exhibits solvent dependent luminescent changes in the solid state. Crystallisation of CDPA-DMAP from EtOAc (2a) and CH3CN (2b) produces two different solid forms which exhibit slight differences in luminescence (λmax at 522 nm and 529 nm, respectively). The chiral luminescent host system (3a) obtained from CH3CN shows robust, reversible CH3CN-selective luminescent sensing (λmax at 523 nm (with CH3CN) and 553 nm (without CH3CN)). In this case the luminescence changes with the crystallising solvent (MeOH (3b) and EtOH (3c)).
采用超分子方法制备了基于三苯胺基发光酸 2-氰基-3(4-(二苯基氨基)苯基)丙烯酸(CDPA)和胺(丙胺 (1)、二甲氨基吡啶 DMAP (2) 和 (1S,2R)-2-氨基-1,2-二苯基乙醇 (3))的新型超分子发光宿主系统。在 CDPA 基质中加入胺会导致固态发光发生蓝移。1 形成了一个 CH3CN 选择性发光宿主,并在固态中显示出依赖于溶剂的发光变化。CDPA-DMAP 从 EtOAc(2a)和 CH3CN(2b)中结晶会产生两种不同的固态形式,它们的发光强度(λmax 分别为 522 纳米和 529 纳米)略有不同。从 CH3CN 中得到的手性发光宿主系统 (3a) 显示出稳健、可逆的 CH3CN 选择性发光感应(λmax 为 523 纳米(含 CH3CN)和 553 纳米(不含 CH3CN))。在这种情况下,发光随结晶溶剂(MeOH (3b) 和 EtOH (3c))的变化而变化。