Printable biflourene based ultra-violet (UV) organic light-emitting electrochemical cells (OLECs) with improved device performance was written by Arumugam, Sasikumar;Li, Yi;Pearce, James E.;Court, Katie L.;Piana, Giacomo;Jackman, Edward H.;Ward, Oliver J.;Charlton, Martin D. B.;Tudor, John;Harrowven, David C.;Beeby, Steve P.. And the article was included in Organic Electronics in 2022.Electric Literature of C11H20N2 This article mentions the following:
A series of printable UV emitting ionic bifluorene derivatives have been prepared incorporating pendent alkylimidazolium groups. Herein, we detail the synthesis of compounds and the methods used in device fabrication. We show how ink formulation is improved by increasing the solubility of the active bifluorene through extension of the alkyl chain length and switching the counter ion from PF–6 to CF3SO–3. We also show how organic light emitting electrochem. cells (OLECs) can be fabricated by spray coating to achieve an active layer with a thickness of 鈭?50-200 nm, leading to working devices with a turn on voltage of around 6.5 V. This gives electroluminescent (EL) that peaks between 385 nm and 390 nm with a maximum EL emission intensity of 1.29 渭W/cm2. Thus, EL emission within the UV range has been demonstrated successfully with the synthesized mols. via spray coating onto glass slides. In the experiment, the researchers used many compounds, for example, 1-Octyl-1H-imidazole (cas: 21252-69-7Electric Literature of C11H20N2).
1-Octyl-1H-imidazole (cas: 21252-69-7) belongs to imidazole derivatives. The solubility of imidazoles in ethers is lower than that in alcohols and decreases with increasing chain length of the ethers . In contrast, the solubility of benzimidazoles in alcohols (C3鈥揅6) is higher than in water and generally decreases with a The pharmacophore of imidazole exists in bioactive compounds including amino acids, plant growth regulators and therapeutic agents.n increase of the alkyl chain length of the alcohols. Electric Literature of C11H20N2
Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem