《Doubly Encapsulated Perylene Diimides: Effect of Molecular Encapsulation on Photophysical Properties》 was published in Journal of Organic Chemistry in 2020. These research results belong to Royakkers, Jeroen; Minotto, Alessandro; Congrave, Daniel G.; Zeng, Weixuan; Patel, Adil; Bond, Andrew D.; Bucar, Dejan-Kresimir; Cacialli, Franco; Bronstein, Hugo. Quality Control of Tris(dibenzylideneacetone)dipalladium(0) The article mentions the following:
Intermol. interactions play a fundamental role on the performance of conjugated materials in organic electronic devices, as they heavily influence their optoelectronic properties. Synthetic control over the solid state properties of organic optoelectronic materials is crucial to access real life applications. Perylene diimides (PDIs) are one of the most highly studied classes of organic fluorescent dyes. In the solid state, π-π stacking suppresses their emission, limiting their use in a variety of applications. Here, we report the synthesis of a novel PDI dye that is encapsulated by four alkylene straps. X-ray crystallog. indicates that intermol. π-π stacking is completely suppressed in the crystalline state. This is further validated by the photophys. properties of the dye in both solution and solid state and supported by theor. calculations However, we find that the introduction of the encapsulating “”arms”” results in the creation of charge-transfer states which modify the excited state properties. This article demonstrates that mol. encapsulation can be used as a powerful tool to tune intermol. interactions and thereby gain an extra level of control over the solid state properties of organic optoelectronic materials. In the experimental materials used by the author, we found Tris(dibenzylideneacetone)dipalladium(0)(cas: 51364-51-3Quality Control of Tris(dibenzylideneacetone)dipalladium(0))
Tris(dibenzylideneacetone)dipalladium(0)(cas: 51364-51-3) is the most widely used PdO precursor complex in synthesis and catalysis, in particular as a catalyst for various coupling reactions. Quality Control of Tris(dibenzylideneacetone)dipalladium(0) It is used as a catalyst precursor for palladium-catalyzed carbon-nitrogen bond formation, conversion of aryl chlorides, triflates and nonaflates to nitroaromatics.
Referemce:
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI