14783-09-6Relevant articles and documents
Syntheses, characterization and optical properties of some copper(I) halides with 1,10-phenanthroline ligand
Yu, Jie-Hui,Lue, Zheng-Liang,Xu, Ji-Qing,Bie, Hai-Ying,Lu, Jing,Zhang, Xiao
, p. 940 - 945 (2004)
The hydrothermal reactions of CuX2 or CuX with phen (1,10-phenanthroline) have resulted in the syntheses of eight compounds 1-8. In these, 1:1 adducts of CuX/phen are reported: ionic [Cu(PhBn)2] [CuX2] (X = Cl 1, Br 2) and dimer [Cu2I2(phen)] 3; the trinuclear clusters [Cu3X3(phen)2] (X = Br 5, I 7) were first prepared and the structures can be best described as 1:1 adducts of dimers and CuX; the chain compounds 6 and 8 belong to the same series with the formula [CuX2L] (L = organic ligand), but the chain arrangement is different; the structure of 4 is yet being refined. Compounds 1-8 have a high thermal stability. The third-order nonlinear optical properties of compounds 5, 6 and 8 were investigated and all exhibit a reverse saturable absorption (α2 > 0) and self-defocusing performance (n 2 0).
Synthesis of Fullerotetrahydroquinolines via [4 + 2] Cycloaddition Reaction of [60]Fullerene with in Situ Generated Aza-o-quinone Methides
Jiang, Sheng-Peng,Lu, Wen-Qiang,Liu, Zhan,Wang, Guan-Wu
, p. 1959 - 1968 (2018)
An efficient [4 + 2] cycloaddition reaction of [60]fullerene with the in situ generated aza-o-quinone methides from N-(o-chloromethyl)aryl sulfonamides with the assistance of Cu2O has been developed to afford a series of fullerotetrahydroquinol
Comparison of the activation energies for the thermal decomposition of copper and nickel compounds obtained by various thermogravimetric methods
Howell,Sastry
, p. 311 - 314 (1999)
The thermal decomposition of representative transition metal compounds has been examined using both standard and high resolution thermogravimetry. Using two approaches for plotting variable heating rate data, it has been demonstrated that comparable value
Synthesis and photophysical properties of metal complexes of curcumin dyes: Solvatochromism, acidochromism, and photoactivity
Bello Forero, Josué S.,Mello, Thaís P.,Oliveira, Simone S. C.,Santos, André L. S.,Souza, Lucieri O. P.,de Fran?a, Bruna M.
, (2021/12/10)
Curcumin and its dyes have attracted attention due to their environment-sensitivity and optical properties. However, the free molecule has low photoactivity, which is a limitation for use in photodynamic therapy. To overcome this limitation, we proposed the chelation of a D-π-A-π-D curcumin dye (1) with the metals Cu (II) and Pd (II). The photophysical properties of the curcumin dyes were investigated in different solvents, using UV–vis spectroscopy and time-resolved/steady-state fluorescence techniques. In our results, all curcumin dyes exhibited a positive solvatochromism from non-polar to polar solvents, with the Stokes’ shift in the range of 1895–4970 cm?1. The acidochromism studies were performed in chloroform solution and TLC plates using trifluoroacetic acid (TFA). The results exhibited a negative acidochromism and fluorescence quenching upon gradual addition of TFA, demonstrating reversibility upon addition of triethylamine (TEA). The main mechanism which influences the solvatochromism/acidochromism is the ICT system and fluorescence lifetime decays exhibited mono-exponential fit for aprotic solvents and bi-exponential fit for protic solvents (EtOH and MeOH). Compared to the curcumin ligand (1), the metal complexes (1a-b) exhibited higher singlet oxygen quantum yields (ΦΔ = 0.36 and 0.54, respectively). The in vitro antimicrobial photoactivity of the compounds was evaluated against six different microorganisms. The results showed that the metal complexes (1a-b) exhibited both antileishmanial (MIC = 2.29 μM against Leishmania amazonensis promastigotes) and antifungal (IC50 = 10 μM against Sporothrix brasiliensis yeasts) activities, while the ligand showed no activity, suggesting the chelation with the metals Cu (II) and Pd (II) may improve its photoactivity.
A copper diimine-based honeycomb-like porous network as an efficient reduction catalyst
Ahmad, Abrar,Shah, Syed Niaz Ali,Arshad, Mehwish,Bélanger-Gariepy, Francine,Tiekink, Edward R.T.,ur Rehman, Zia
, (2020/10/20)
Nitrophenols are among the widely used industrial chemicals worldwide; however, their hazardous effects on environment are a major concern nowadays. Therefore, the conversion of environmentally detrimental p-nitrophenol (PNP) to industrially valuable p-aminophenol (PAP), a prototype reaction, is an important organic transformation reaction. However, the traditional conversion of PNP to PAP is an expensive and environmentally unfriendly process. Here, we report a honeycomb-like porous network with zeolite-like channels formed by the self-organization of copper, 1,10-phenanthroline, 4,4′-bipyridine, and water. This porous network effectively catalyzed the transformation of hazardous PNP to pharmaceutically valued PAP. In the presence of complex, PNP to PAP conversion occurred in a few minutes, which is otherwise a very sluggish process. To assess the kinetics, the catalytic conversion of PNP to PAP was studied at five different temperatures. The linearity of lnCt/Co versus temperature plot indicated pseudo-first-order kinetics. The copper complex with zeolite like channels may find applications as a reduction catalyst both on laboratory and industrial scales and in green chemistry for the remediation of pollutants.
