880499-52-5

Upstream product

• 1885-29-6 anthranilic acid nitrile 
• 97308-62-8 1-(2-cyanophenyl)-2-(trimethylsilyl)acetylene 
• 40888-26-4 2-ethynylbenzonitrile 
• 39263-32-6 2-amino-5-bromobenzonitrile 
• 2042-37-7 o-cyanobromobenzene 
• 121554-10-7 5-bromo-2-iodobenzonitrile 
• 880499-51-4 5-bromo-2-trimethylsilanylethynyl-benzonitrile 

Downstream Products

• 1027100-58-8 5-[[2-cyano-4-[[2-cyano-4-[[2-cyano-4-[(2-cyanophenyl)-ethynyl]phenyl]-ethynyl]-phenyl]-ethynyl]-phenyl]-ethynyl]-2-[(3-cyanophenyl)-ethynyl]benzonitrile 

Relevant academic research and scientific papers

Block modification of rod-shaped π conjugated carbon frameworks with donor and acceptor groups toward highly fluorescent molecules: Synthesis and emission characteristics

To create organic molecules that are highly fluorescent at a longer wavelength region, we investigated the synthesis (using Pd-catalyzed cross-coupling) and photophysical properties (Φ f, λ em, τ , λ abs, and ε ) of the following π conjugated molecular rods consisting of p-phenyleneethynylene units modified by donor (OMe) and/or acceptor (CN) groups: (1) side-donor modification systems (SD systems), (2) side-acceptor modification systems (SA systems), and (3) systems consisting of a donor block and an acceptor block (BL systems). As a consequence, very high Φ f values (>0.95) were obtained for BL systems. Bathochromic shifts of λ em for the same π conjugation length were largest for BL systems. Thus we succeeded in creating highly efficient light emitters at a longer wavelength region by block modification (e.g., Φ f = 0.97, λ em = 464 nm for BL-9). Considerably intense solid emission (Φ f ～ 0.5) at a longer wavelength region (500- 560 nm) was also found for BL systems. It has been found that BL-6 and BL-8 exhibit interesting two photon absorption characteristics. This journal is The Royal Society of Chemistry.

New fluorophores with rod-shaped polycyano π-conjugated structures: Synthesis and photophysical properties

Novel rod-shaped polycyano-oligo(phenyleneethynylene)s were synthesized by Pd cross-coupling reaction. Polycyano groups were found to greatly improve the emission efficiency (Φf) of OPEs. By the end donor modification, we achieved the creation of very intense blue light-emitting fluorophore with the SMe group (Φf) = 0.972, log ε 4.89, λ em 455 nm) and very intense yellow light-emitting fluorophore with the NMe2 group (Φf = 0.999, log ε 4.75, λem 555 nm). Contrasting Φf solvent dependency of 6 and 7 and a linear relationship between Φf and σp-X over the whole region of σp-X were also found.