15302-99-5Relevant articles and documents
Molecular design of a novel ligand for Menshutkin complexation of Bi(iii) from aqueous acidic copper sulfate electrolyte solutions and experimental investigations
Arora, Jyotsna S.,Gaikar, Vilas G.
, p. 39663 - 39674 (2016)
5-Amino-2,9-diphenoxy-1,10-phenanthroline functionalized silica is designed to reversibly adsorb bismuth impurities from strongly acidic aqueous copper sulfate solutions. The ligand interacts with Bi(iii) ions through weak non-covalent interactions due to the presence of the arene-π electron cloud of the phenyl moiety. The stronger complexation of Bi(iii) as compared to Sb(iii), As(iii) and Cu(ii) ions with the ligand was explored using Density Functional Theory (DFT) under solvated conditions. The theoretical predictions were validated by experimental studies with Bi(iii)/Cu(ii) mixtures in aqueous acidic solutions. The ligand shows very high selectivity (α = 978) towards Bi(iii) in the presence of a high concentration of Cu(ii) in the acidic solutions.
1,10-phenanthrolinium ionic liquid crystals
Cardinaels, Thomas,Lava, Kathleen,Goossens, Karel,Eliseeva, Svetlana V.,Binnemans, Koen
, p. 2036 - 2043 (2011)
The 1,10-phenanthrolinium cation is introduced as a new building block for the design of ionic liquid crystals. 1,10-Phenanthroline, 5-methyl-1,10- phenanthroline, 5-chloro-1,10-phenanthroline, and 4,7-diphenyl-1,10- phenanthroline were quaternized by rea
Synthesis and Characterization of a Ruthenium(II) Complex for the Development of Supramolecular Photocatalysts Containing Multidentate Coordination Spheres
Huber, Fabian L.,Nauroozi, Djawed,Mengele, Alexander K.,Rau, Sven
, p. 4020 - 4027 (2017)
The synthesis of the new bis-heteroleptic RuII complex [(tbbpy)2Ru(dptpphz)](PF6)2 (7), that exhibits a tetradentate coordination sphere for a second metal centre, and its characterization are presented. The complex shows similar photostability and redox properties regarding the first ligand-centred reductions compared to its tpphz analogue. Concentration-dependent NMR investigations were performed and a dimerization constant (KD = 83 ± 5) could be calculated, which was significantly lower than that of other tpphz systems. Photophysical investigations reveal a stabilizing effect of the two electron-withdrawing 2-pyridyl substituents on π–π* transition of the phenazine sphere. The typical H2O-induced light-switch effects have also been observed. To further highlight the potential of the tetradentate coordination site, the ZnII adduct of 7 was prepared and preliminary studied.
Template construction of a series of supramolecular coordination polymers via 6,7-dihydro-5H-[1,4]diazepino[1,2,3,4-lmn][1,10]phenanthroline-4,8-diium cation
Zhang, Zhenhua,Niu, Yunyin,Ng, Seikweng,Wu, Benlai,Hou, Hongwei
, p. 1683 - 1694 (2011)
Five cation-induced complexes, (phen-dzp) [ZnBr3N3] (1), (phen-dzp) [ZnCl2Br2] (2), (phen-dzp) (H 3O)2 [Fe(CN)6] (3), (phen-dzp)2 [Cu2I6] (4), and [(phen-dzp)(Ag2Br 4)]n (5) [phen-dzp = (C15H14N 2)2+, 6,7-dihydro-5H-[1,4]diazepino[1,2,3,4-lmn][1,10] phenanthroline-4,8-diium], have been synthesized via self-assembly in solution. The crystal structures of 1-3 show that they all crystallize in monoclinic systems with mononuclear structures. Compound 4 is a binuclear coordination polymer. Complex 5 possesses a 2-D supramolecular layer with the organic cation phen-dzp trapped in it; interestingly, each inorganic polymeric planar layer is composed of large, decagon rings formed by sharing four Br- and four [Ag2Br4] quadrilateral units with six adjacent decagon rings. The results provide insights into template effects of synthetic approaches on the construction of supramolecular compounds. The structures of 1-5 have been characterized by elemental analysis, infrared spectra, and single-crystal X-ray crystallography. Solid-state photoluminescence properties of 1-5 have been determined.
A Ligand That Targets CUG Trinucleotide Repeats
Li, Jinxing,Matsumoto, Jun,Bai, Li-Ping,Murata, Asako,Dohno, Chikara,Nakatani, Kazuhiko
, p. 14881 - 14889 (2016)
The development of small molecules that can recognize specific RNA secondary and tertiary structures is currently an important research topic for developing tools to modulate gene expression and therapeutic drugs. Expanded CUG trinucleotide repeats, known as toxic RNA, capture the splicing factor MBNL1 and are causative of neurological disorder myotonic dystrophy type 1 (DM1). Herein, the rational molecular design, synthesis, and binding analysis of 2,9-diaminoalkyl-substituted 1,10-phenanthroline (DAP), which bound to CUG trinucleotide repeats, is described. The results of melting temperature (Tm) analyses, surface plasmon resonance (SPR) assay, and electrospray spray ionization time-of-flight (ESI-TOF) mass spectrometry showed that DAP bound to r(CUG)9but not to r(CAG)9and r(CGG)9. The dual luciferase assay clearly indicated DAP bound to the r(CUG)nrepeat by affecting the translation in vitro.
Torands revisited: Metal sequestration and self-assembly of cyclo-2,9-tris-1,10-phenanthroline hexaaza macrocycles
Schwab, Matthias Georg,Takase, Masayoshi,Mavrinsky, Alexey,Pisula, Wojciech,Feng, Xinliang,Gámez, José A.,Thiel, Walter,Mali, Kunal S.,De Feyter, Steven,Müllen, Klaus
, p. 8426 - 8434 (2015)
A series of novel toroidal cyclo-2,9-tris-1,10-phenanthroline macrocycles with an unusual hexaaza cavity are reported. Nickel-mediated Yamamoto aryl-aryl coupling was found to be a versatile tool for the cyclotrimerization of functionalized 1,10-phenathroline precursors. Due to the now improved processability, both liquid-crystalline behavior in the bulk phase and two-dimensional self-assembly at the molecular level could be studied, for the first time, for a torand system. The macrocycles exhibited a strong affinity for the complexation of different metal cations, as evidenced by MALDI-TOF analysis and spectroscopic methods. Experimental results were correlated to an extensive computational study of the cyclo-2,9-tris-1,10-phenanthroline cavity and its binding mode for metal cations. Due to the combination of several interesting features, toroidal macrocycles may find future applications in the field of ion and charge transport through molecular channels, as well as for chemical sensing and molecular writing in surface-confined monolayers under STM conditions.
Cu-tethered macrocycle catalysts: Synthesis and size-selective CO2-fixation to propargylamines under ambient conditions
Kim, Nam-Kyun,Sogawa, Hiromitsu,Takata, Toshikazu
supporting information, (2020/05/01)
A novel air-stable, Cu-tethered macrocycle catalyst possessing a large inner cavity was successfully synthesized, creating a unique supramolecular catalytic system. The catalyst was utilized in the CO2-fixation reaction to propargylamines. The reaction proceeded more efficiently compared to the conventional CuI catalyst under atmospheric CO2 condition. Notably, owing to its topological effect, the Cu-tethered macrocycle catalyst exhibited unique substrate size selectivity.
BIS-PHENANTHROLINE IRON MACROCYCLE COMPLEX FOR OXYGEN REDUCTION REACTION
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Page/Page column 6; 48, (2020/09/27)
Disclosed are compounds, compositions, and methods useful for the oxygen reduction reaction (ORR) and capable of operating efficiently at low overpotentials.