CN
Search Within
45804
应用筛选条件
关键词:'45804'
显示 1-30 共 31 条结果 关于 "45804" 范围 论文
Yasuharu Yoshimi et al.
Molecules (Basel, Switzerland), 15(4), 2623-2630 (2010-04-30)
Single electron transfer (SET)-photochemical decarboxylation of free carboxylic acids was performed in a polar solvent using several arenes such as phenanthrene, naphthalene, 1-methylnaphthalene, biphenyl, triphenylene, and chrysene in the presence of various electron acceptors such as 1,2-, 1,3-, and 1,4-dicyanobenzenes
Hemant Gopee et al.
The Journal of organic chemistry, 78(18), 9505-9511 (2013-08-31)
Triphenylene twins are intriguing structures, and those bridged through their 3,6-positions by dipyrromethene units give a new class of macrocycles that can be viewed as rigid, expanded porphyrin derivatives in which coplanarity is enforced in a formally antiaromatic π system.
Simon Duttwyler et al.
The Journal of organic chemistry, 78(5), 2134-2138 (2012-11-21)
The arenium acid [mesitylene-H](+) has been shown to be an extraordinarily active H/D exchange catalyst for the perdeuteration of polycyclic aromatic hydrocarbons. The reactions take place under ambient conditions in C6D6 as an inexpensive deuterium source. High isolated yields and
Analysis of polycyclic aromatic hydrocarbons (PAHs) in environmental samples: a critical review of gas chromatographic (GC) methods
Prasad RP, et al.
Journal of Chemical Sciences (Bangalore), 126(5), 1311-1321 (2014)
Wilson K Gichuhi et al.
The journal of physical chemistry. A, 114(51), 13296-13302 (2010-12-07)
Direct current (DC) slice imaging of state-selected ions is combined with high-level ab initio calculations to give insight into reaction pathways, dynamics, and energetics for ethylamine cation photodissociation at 233 nm. These reaction pathways are of interest for understanding the
Ozcan Kocyigit et al.
Journal of hazardous materials, 183(1-3), 334-340 (2010-08-10)
We presented the synthesis of a novel Schiff base and its complexation properties with some transition metal ions in this work. For this, the 2,3,4,6,7,10,11 hexahydroxytriphenylene (HHTP) as starting material was synthesized according to known procedure. Moreover, the 2-((2-chloroethylimino)methyl) phenol
Lucas A Haverkate et al.
The journal of physical chemistry. B, 116(43), 13098-13105 (2012-10-05)
Discotic liquid crystalline (DLC) charge transfer (CT) complexes, which combine visible light absorption with rapid charge transfer characteristics within the CT complex, can have a great potential for photovoltaic applications when they can be made to self-assemble in a bulk
Vandana Bhalla et al.
Dalton transactions (Cambridge, England : 2003), 41(37), 11413-11418 (2012-08-15)
The binding behavior of triphenylene based copper ensemble prepared in situ has been investigated toward various anions (F(-), Cl(-), Br(-), I(-), CH(3)COO(-), H(2)PO(4)(-), NO(3)(-), OH(-), ClO(4)(-), CN(-), CO(3)(-) and SO(4)(-)) by UV-vis and fluorescence spectroscopy. Among various anions tested, 1-Cu(2+)
Isabel López-Tocón et al.
Langmuir : the ACS journal of surfaces and colloids, 26(10), 6977-6981 (2010-03-09)
Surface enhanced raman scattering (SERS) of triphenylene (TP) has been recorded on Ag nanoparticles functionalized with the molecular assembler bis-acridinium lucigenine dication (LG) which approaches the adsorbate to the metal surface allowing for its detection. Structural information on the host
Martin Kaller et al.
Chemistry (Weinheim an der Bergstrasse, Germany), 16(21), 6326-6337 (2010-04-23)
The twisted lateral tetraalkyloxy ortho-terphenyl units in dibenzo[18]crown-6 ethers 1a-f were readily converted into the flat tetraalkyloxytriphenylene systems 2a-f by oxidative cyclization with FeCl(3) in nitromethane. Reactions of the latter with potassium salts gave complexes KX.2, which displayed mesomorphic properties.
Takayuki Kameda et al.
Chemosphere, 90(2), 766-771 (2012-10-23)
The kinetics of CCl(4) liquid-phase reactions of ten kinds of polycyclic aromatic compounds (PACs) including triphenylene (TP) with NO(3) radicals have been investigated at 273K by a relative rate method using naphthalene (NA) as a reference compound. The obtained relative
Tiago Palmeira et al.
Chemphyschem : a European journal of chemical physics and physical chemistry, 16(3), 640-648 (2014-12-17)
The luminescence decay of a species in an absorbing medium whose optical thickness changes with time, as occurs with triplet-triplet absorption following excitation cut-off, is studied theoretically and experimentally. A general luminescence decay function based on a distribution of optical
Md Akhtarul Alam et al.
Journal of the American Chemical Society, 131(49), 17722-17723 (2009-12-10)
Triphenylene (TP) derivatives bearing appropriate paraffinic side chains with imidazolium ion-based ionic liquid (IL) pendants were unveiled to display a phase diagram with liquid crystalline (LC) mesophases of bicontinuous cubic (Cub(bi)) and hexagonal columnar (Col(h)) geometries. While their phase transition
Tsutomu Ishi-I et al.
The Journal of organic chemistry, 75(20), 6858-6868 (2010-09-24)
This paper reports the self-assembling and electrochemical nature of hexaazatriphenylene-based electron-deficient heteroaromatics with an expanded π-electron system. The tri(phenanthro)hexaazatriphenylenes (TPHAT-Cs) and tri(phenanthrolino)hexaazatriphenylenes (TPHAT-Ns) were prepared by condensation reactions of the corresponding phenanthrenequinones and phenanthrolinediones, respectively, with hexaaminobenzene. Their electron affinity
Cécile Givelet et al.
Organic & biomolecular chemistry, 9(21), 7457-7460 (2011-09-14)
The combination of hydrophobic effects and ionic pairing within a triphenylene-based receptor were exploited for the binding of biological phenylethylamines, serotonin and D-glucosamine in phosphate buffered water.
Vandana Bhalla et al.
Dalton transactions (Cambridge, England : 2003), 42(13), 4450-4455 (2013-01-26)
Nanoaggregates of a supramolecular ensemble of triphenylene derivative 3 and Cu(2+) ions exhibit 'turn-on' response towards CN(-) ions in an aqueous medium and can detect the trace amount of inorganic cyanide ions (NaCN) in tap water and blood serum milieu.
Fabián Vaca Chávez et al.
The journal of physical chemistry. B, 116(8), 2339-2346 (2012-02-23)
The Larmor frequency and temperature dependence of the proton nuclear magnetic resonance (NMR) spin-lattice relaxation time was measured in the isotropic and columnar phases of both chain-end fluorinated triphenylene disk-like and fully hydrogenated molecules. In the columnar phase, the results
Mahuya Bagui et al.
The journal of physical chemistry. A, 115(9), 1579-1592 (2011-02-12)
A donor-acceptor charge transfer system based on two discotic mesogens has been synthesized. The donor is either a triphenylene (POG0) or a triphenylene-based conjugated dendron (POG1), while the acceptor is a perylene diimide (PDI) core. The donors are covalently linked
Jeongho Jay Lee et al.
Angewandte Chemie (International ed. in English), 51(34), 8490-8494 (2012-07-24)
Orient and conduct: Triphenylene-based discotic ionic liquid crystals (ILCs) with six imidazolium ion pendants can disperse pristine single-walled carbon nanotubes (SWNTs). When the ILC is columnarly assembled, doping with SWNTs results in macroscopic homeotropic columnar orientation. Combination of shear and
Wide-range 2D lattice correlation unveiled for columnarly assembled triphenylene hexacarboxylic esters.
Terutsune Osawa et al.
Angewandte Chemie (International ed. in English), 51(32), 7990-7993 (2012-07-04)
Michał Szumski et al.
Journal of chromatography. A, 1373, 114-123 (2014-12-04)
A novel, cholesterol-based polymeric monolithic stationary phase for capillary liquid chromatography, was prepared by thermally initiated in-situ polymerization. Cholesteryl methacrylate (CholMA) was used as a functional monomer and trimethylolpropane trimethacrylate (TRIM) was a cross-linker, while azobisisobutyronitrile (AIBN) was an initiator.
Tomoko Mori et al.
Analytical sciences : the international journal of the Japan Society for Analytical Chemistry, 26(3), 311-316 (2010-03-11)
We have prepared polyethylene glycol (PEG)-type, polymer-based monolithic columns (PEG-type columns) to study the basic properties of PEG-type monolithic polymers. Chromatographic characteristics of the PEG-type columns were obtained using a semi-micro HPLC system while polycyclic aromatic hydrocarbons and benzene derivatives
Yibao Li et al.
Physical chemistry chemical physics : PCCP, 15(1), 125-128 (2012-11-14)
We investigate the influence of temperature on the self-assembly of 2,6,11-tricarboxydecyloxy-3,7,10-triundecyloxy triphenylene (asym-TTT) adsorbed on HOPG using scanning tunneling microscopy (STM) at the liquid/solid interface. We show that the packing structures of 2D self-assembled asym-TTT can be precisely tuned by
Alpana Nayak et al.
The journal of physical chemistry. B, 113(12), 3669-3675 (2009-08-13)
We have studied the mechanical properties of films of a novel ionic discogen, pyridinium tethered with hexaalkoxytriphenylene (PyTp) and its complex with DNA (PyTp-DNA) using atomic force microscope (AFM). The PyTp and PyTp-DNA complex monolayer films were first formed at
Manuele Lamarra et al.
Physical chemistry chemical physics : PCCP, 14(16), 5368-5375 (2012-02-24)
We address the calculation of charge carrier mobility of liquid-crystalline columnar semiconductors, a very promising class of materials in the field of organic electronics. We employ a simple coarse-grained theoretical approach and study in particular the temperature dependence of the
Analysis of polycyclic aromatic hydrocarbons (PAHs) in environmental samples: a critical review of gas chromatographic (GC) methods
Poster.LD, et al.
Analytical and Bioanalytical Chemistry, 386(4), 859-881 (2006)
Stefan-S Jester et al.
Angewandte Chemie (International ed. in English), 51(34), 8555-8559 (2012-07-24)
Seeing stars: The two-dimensional patterns of the polycyclic heteroaromatic star molecules 1 on graphite vary with the side chain length. For n=12, frustrated self-assembly leads to hierarchically organized superstructures: up to 10 molecules form triangular aggregates which pack densely into
Vandana Bhalla et al.
Chemical communications (Cambridge, England), 48(39), 4722-4724 (2012-03-01)
The zinc complex of a new triphenylene based receptor is evaluated for its anti-oxidant activity which is better in comparison to that of commercially available anti-oxidants.
Lin Jiang et al.
Organic letters, 13(12), 3020-3023 (2011-05-25)
Triphenylene has been successfully fused to the porphyrin periphery through a convenient oxidative ring-closure reaction. Bistriphenylene-fused porphyrins and a dibenzo[fg,op]tetracene-fused porphyrin have also been obtained using a similar approach. These π-extended porphyrins exhibited broadened and bathochromic shifted UV-vis absorptions.
A A Toropov et al.
European journal of medicinal chemistry, 43(4), 714-740 (2007-07-17)
Simplified molecular input line entry system (SMILES) has been utilized in constructing quantitative structure-property relationships (QSPR) for octanol/water partition coefficient of vitamins and organic compounds of different classes by optimal descriptors. Statistical characteristics of the best model (vitamins) are the
1/2