290347-92-1

Upstream product

• 12081-05-9 1-(4-bromophenyl)-1,2-closo-carborane 
• 74-88-4 methyl iodide 

Downstream Products

• 1220020-65-4 1-(Mes₂B)-4-(2-Me-1,2-C₂B₁₀H₁₀)benzene 
• 1416696-24-6 2-{p-(2-Me-1,2-carboran-1-yl)phenyl}pyridine 

Relevant academic research and scientific papers

Highly Emissive Organic Single-Molecule White Emitters by Engineering o-Carborane-Based Luminophores

The development of organic single-molecule solid-state white emitters holds a great promise for advanced lighting and display applications. Highly emissive single-molecule white emitters were achieved by the design and synthesis of a series of o-carborane-based luminophores. These luminophores are able to induce multiple emissions to directly emit high-purity white light in solid state. By tuning both molecular and aggregate structures, a significantly improved white-light efficiency has been realized (absolute quantum yield 67 %), which is the highest value among the known organic single-molecule white emitters in the solid state. The fine-tuning of the packing modes from H- to J- and cross-stacking aggregates as well as intermolecular hydrogen bonds are successful in one molecular skeleton. These are crucial for highly emissive white-light emission in the solid state.

Phosphorescence color tuning of cyclometalated iridium complexes by o-carborane substitution

Heteroleptic (Ca?N)2Ir(acac) (C a?N = 4-CBppy (1); 5-CBppy (2), 4-fppy (4) CB = ortho-methylcarborane; ppy = 2-phenylpyridinato-C2,N, 4-fppy = 2-(4-fluorophenyl)pyridinato-C2,N, acac = acetylacetonate) complexes were prepared and characterized. While 1 exhibits a phosphorescence band centered at 531 nm, which is red-shifted compared to that of unsubstituted (ppy)2Ir(acac) (3) (λem = 516 nm), the emission spectrum of 2 shows a blue-shifted band at 503 nm. Comparison with the emission band for the 4-fluoro-substituted 4 (λem = 493 nm) indicates a substantial bathochromic shift in 1. Electrochemical and theoretical studies suggest that while carborane substitution on the 4-position of the phenyl ring lowers the 3MLCT energy by a large contribution to lowest unoccupied molecular orbital (LUMO) delocalization, which in turn assigns the lowest triplet state of 1 as [dπ(Ir)→π*(C a?N)] 3MLCT in character, the substitution on the 5-position raises the 3MLCT energy by the effective stabilization of the highest occupied molecular orbital (HOMO) level because of the strong inductive effect of carborane. An electroluminescent device incorporating 1 as an emitter displayed overall good performance in terms of external quantum efficiency (6.6%) and power efficiency (10.7 lm/W) with green phosphorescence.