19264-74-5Relevant articles and documents
Phenothiazine and carbazole substituted pyrene based electroluminescent organic semiconductors for OLED devices
Salunke, Jagadish K.,Wong,Feron, Krishna,Manzhos, Sergei,Lo, Ming Fai,Shinde, Durgaprasad,Patil, Abhijeet,Lee,Roy,Sonar, Prashant,Wadgaonkar, Prakash P.
, p. 1009 - 1018 (2016)
Due to their easy availability, low cost and opportunities for exploiting reactions of bromo substituents, 1,3,6,8-tetrabromopyrene has attracted major attention in the organic electronics community for designing and constructing novel classes of pyrene b
Impact of alkoxy chain length on carbazole-based, visible light-driven, dye sensitized photocatalytic hydrogen production
Watanabe, Motonori,Hagiwara, Hidehisa,Ogata, Yudai,Staykov, Aleksandar,Bishop, Sean R.,Perry, Nicola H.,Chang, Yuan Jay,Ida, Shintaro,Tanaka, Keiji,Ishihara, Tatsumi
, p. 21713 - 21721 (2015)
Alkoxyphenyl-substituted carbazole-based metal-free organic dyes were synthesized and effectively used for dye-sensitized, visible-light-driven, photocatalytic hydrogen production. Photocatalytic hydrogen production was investigated using a TiO2/dye/Pt structure with triethanolamine as the sacrificial reagent. The dye-loaded TiO2 photocatalyst exhibited a high yield of hydrogen production when the length of the alkoxy chain was long enough to sufficiently improve the hydrophobicity at the interface between the dye-loaded TiO2 and the water medium. In the alkoxyphenyl-substituted carbazole dyes, the dye with the longest alkoxy chain (C22) exhibited the best hydrogen production performance, but it had a yield only slightly better than that of the dye with the second longest chain length (C16). The dye C22 displayed a turnover number (TON) of 3094 after 24 h of visible light irradiation (>420 nm). However, the compound with no hydrophobic substituent (C1), exhibited the lowest hydrogen production performance with a TON of 1497. Thus, a 207% increase in the hydrogen production yield was observed when hydrophobic substituents were present. Analysis of time-resolved absorption spectra, impedance spectra and incident photon conversion efficiency spectra revealed that the alkoxy chain has a hydrophobic effect at the interface between the dye-loaded TiO2 and the water. Specifically, the hydrophobicity of the dye improved the charge-recombination lifetime for electron injection from the dye into the TiO2 surface in the water for hydrogen production.
Red emitting coumarin based 4, 6-disubstituted-3-cyano-2-pyridones dyes – Synthesis, solvatochromism, linear and non-linear optical properties
Kadam, Mayuri M.L.,Patil, Dinesh S.,Sekar, Nagaiyan
, p. 385 - 398 (2019)
New coumarin fluorescent based D-π-A-π-D dyes are synthesized and studied for their optical properties. Their show absorption and emission respectively are in the range of 471–504 nm and 506–550 nm. Viscosity induced emission intensity increase is examined with 0–100% PEG-400 in ethanol MLK 4 is good FMR as compared to the MLK 1–3 due to the presence of extra-π-conjugation. FMO analysis and Generalized Mulliken Hush analysis show a strong interaction of molecular charge transfer characteristics. The first (α), second (β) and third (γ) order polarizability of MLK 1–4 are calculated by the solvatochromic technique and corroborated by DFT calculations using CAM-B3LYP/6-31G(d) method. The outcomes found by solvatochromic technique are compared theoretically with DFT using B3LYP/6-31G(d) and CAM-B3LYP/6-31G(d) methods. These methods reveal that, CAM-B3LYP/6-31G(d) carry out for calculating α β γ. Photophysical data was also applied to establish the ground and excited state dipole moment ratio using Bakhshiev, Bilot-Kawski, and Liptay functions. Liptay function shows better correlations than the other two functions for all dyes.
The remarkable selectivity of the 2-arylquinoline-based acyl hydrazones toward copper salts: Exploration of their catalytic applications in the copper catalysed: N -arylation of indole derivatives and C1-alkynylation of tetrahydroisoquinolines via the A
Echeverry-Gonzalez, Carlos A.,Ortiz Villamizar, Marlyn Catalina,Kouznetsov, Vladimir V.
supporting information, p. 243 - 250 (2021/01/11)
Ligands promoting copper-catalysed coupling reactions have received increasing attention because of their ability to enhance the catalytic activity of copper, making these reactions applicable in different fields such as drugs, pharmaceutically interestin
Echeverry-Gonzalez, Carlos A.,Ortiz Villamizar, Marlyn Catalina,Kouznetsov, Vladimir V.
supporting information, p. 243 - 250 (2021/01/11)
Ligands promoting copper-catalysed coupling reactions have received increasing attention because of their ability to enhance the catalytic activity of copper, making these reactions applicable in different fields such as drugs, pharmaceutically interestin
Synthesis of carbazole-based small organic molecule hole transport material and application of carbazole-based small organic molecule hole transport material in perovskite solar cell
-
Paragraph 0024; 0038-0041, (2021/07/31)
The invention belongs to the field of perovskite solar cell materials, and discloses a carbazole-based small organic molecule hole transport material. According to the carbazole-based small organic molecule hole transport material, a carbazole intermediate core group fragment is synthesized by utilizing a low-temperature reaction and a bromination reaction; a target product OY1, a target product OY2 and a target product OY3 are obtained by means of synthesis from the carbazole intermediate core group fragment and peripheral triphenylamine micromolecules through an acylation reaction and a coupling reaction; the structures of the target product OY1, the target product OY2 and the target product OY3 are confirmed through a high-resolution mass spectrum characterization means, and the target product OY1, the target product OY2 and the target product OY3 are applied to a perovskite solar cell; the synthesized compound is subjected to photophysic, electrochemical, intrinsic hole mobility and thin film characteristic tests, and in addition, the photovoltaic performance of the perovskite solar cell is represented through tests of output current-voltage, incident monochromatic photon-electron conversion efficiency, long-term stability and the like of the cell device. Due to low cost, easy chemical synthesis and excellent performance, the carbazole-based small organic molecule hole transport material will become a powerful competitor.
