5660-91-3Relevant articles and documents
1,4-Diphenyltriphenylene grafted polysiloxane as a stationary phase for gas chromatography
Xu, Li,Bai, Jianchun,Du, Aiqin,Yang, Zaixiao,Wu, Bo
, p. 695 - 703 (2020)
In this work, 1,4-diphenyltriphenylene-grafted (14.2%) polysiloxane (DPTP) was successfully synthesized and statically coated on capillary columns as a stationary phase for gas chromatography. The DPTP columns exhibited excellent efficiencies of 3646 plates m-1 for a 30 m column and 3125 plates m-1 for a 10 m column, as evidenced by naphthalene measurements at 120 °C, which demonstrated the good film-forming ability of DPTP. Thermogravimetric analysis showed that the weight of DPTP is reduced by 2% at 380 °C. Separation of the polyethylene pyrolysis product indicated that the maximum allowable operating temperature of the DPTP column is 360 °C. The moderate polarity of the DPTP column was investigated in terms of McReynolds constants. The DPTP column was utilized to separate analytes, including aromatic isomers, fatty acid esters, ethers, polycyclic aromatic hydrocarbons and their derivatives, and nitrogenous heterocyclic compounds, on the basis of the column's strong π-π stacking, dipole-induced dipole, and dispersion interactions with solutes. In general, the DPTP column offers great potential as a novel stationary phase for separating various analytes due to its special structure and remarkable separation performance.
Preparation method for constructing hexabenzocoronene by utilizing polycyclic aromatic hydrocarbon phenanthrene in coal tar
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Paragraph 7-14, (2020/04/29)
The invention discloses a preparation method for constructing hexabenzocoronene by utilizing polycyclic aromatic hydrocarbon phenanthrene in coal tar. According to the method, polycyclic aromatic hydrocarbon phenanthrene in coal tar is used as a raw material and is subjected to an oxidation addition reaction with chromium trioxide to generate phenanthrenequinone, phenanthrenequinone and dibenzyl ketone are subjected to a nucleophilic addition elimination reaction in a potassium hydroxide methanol solution to generate 9, 10-phenanthro 1, 12-diphenyl cyclopentadiene ketone, 9, 10-phenanthro 1, 12-diphenyl cyclopentadiene ketone and diphenyl acetylene are subjected to a Diels-Alder cycloaddition reaction in a diphenyl ether solution to obtain 1, 2, 3, 4-tetraphenyl triphenylene, and finally,1, 2, 3, 4-tetraphenyl triphenylene and anhydrous ferric chloride are subjected to an oxidative cyclization dehydrogenation reaction to generate hexabenzocoronene. According to the invention, hexabenzocoronene is prepared by taking polycyclic aromatic hydrocarbon substance-phenanthrene in coal tar as a raw material. By reasonably planning the synthesis route, the yield of each step is increased, and the yield of hexabenzocoronene is increased. The method can be popularized and applied to the process of synthesizing graphene from other polycyclic aromatic hydrocarbons in the coal tar, so that high-added-value utilization of coal tar resources is improved.
Controlled deposition of large-area and highly-ordered thin films: effect of dip-coating-induced morphological evolution on resistive memory performance
Li, Yang,Zhang, Cheng,Li, Zhuang,Gu, Peiyang,Wang, Zilong,Li, Hua,Lu, Jianmei,Zhang, Qichun
supporting information, p. 3512 - 3521 (2019/03/27)
Developing a simple, versatile and efficient technique that enables both large-scale production and nano-scale control is highly desirable but very challenging for achieving high-performance organic-based memory electronic devices. Herein, we employed a dip-coating method to fabricate reliable and cost-effective organic memory devices (OMDs). This technique enables us to deposit high-quality, homogeneous and large-area nanopatterns on the surfaces of thin films and realize uniform OMD performances with a record reproducibility up to 96%. To the best of our knowledge, this is the first report on dip-coated OMDs with the highest reproducibility observed to date, which demonstrates the promising versatility of the dip-coating technique to fabricate organic memory devices and its suitability to scale-up for high-throughput solution processing.
Metal complexes (by machine translation)
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Paragraph 0057; 0058, (2019/05/11)
[A] the oxygen reduction catalyst can be suitably used as the metal complex, of novel [...]. (1) Constituent unit represented by the formula [a] structure, carried by said unit, a metal element belonging to group 1 of the periodic table of elements selected from 7 - 11 and metal composite. Figure 8 [drawing] (by machine translation)
NITROGEN-CONTAINING POLYCYCLIC COMPOUND
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Paragraph 0052; 0053, (2019/05/24)
To provide a nitrogen-containing polycyclic compound that can be suitably used as an oxygen reduction catalyst.SOLUTION: A nitrogen-containing polycyclic compound is illustrated by the formula (5), where n is the number of 1 or more, normally 1000 or less.SELECTED DRAWING: None
A Superior Synthesis of Longitudinally Twisted Acenes
Clevenger, Robert G.,Kumar, Bharat,Menuey, Elizabeth M.,Lee, Gene-Hsiang,Patterson, Dustin,Kilway, Kathleen V.
supporting information, p. 243 - 250 (2018/01/08)
Seven longitudinally twisted acenes (an anthracene, two tetracenes, three pentacenes, and a hexacene) have been synthesized by the addition of aryllithium reagents to the appropriate quinone precursors, followed by SnCl2-mediated reduction of their diol intermediates, and several of these acenes have been crystallographically characterized. The new syntheses of the three previously reported twisted acenes, decaphenylanthracene (1), 9,10,11,20,21,22-hexaphenyltetrabenzo[a,c,l,n]pentacene (2), and 9,10,11,12,13,14,15,16-octaphenyldibenzo[a,c]tetracene (14), resulted in a reduction of the number of synthetic steps. As a consequence their overall yields were increased by factors of 50-, 24-, and 66-fold, respectively. All of the twisted acene syntheses reported here are suitable for the synthesis of at least gram quantities of these remarkable hydrocarbon materials.
Diels-alder reaction of isobenzofurans/cyclopentadienones with tetrathiafulvalene: Preparation of naphthalene, fluoranthene, and fluorenone derivatives
Karunakaran, Jayachandran,Mohanakrishnan, Arasambattu K.
supporting information, p. 966 - 970 (2018/02/23)
Diels-Alder reaction of 1,3-diarylbenzo[c]furan/cyclopentadienone with TTF followed by triflic acid mediated cleavage of the resulting adducts led to the formation of the respective 1,4-diaryl substituted naphthalenes, fluoranthenes, and fluorenones. The photophysical properties of representative diaryl-substituted hydrocarbons are also reported.
Microwave-assisted synthesis of functionalized Shvo-type complexes
Cesari, Cristiana,Sambri, Letizia,Zacchini, Stefano,Zanotti, Valerio,Mazzoni, Rita
, p. 2814 - 2819 (2014/06/24)
A simple and expeditious microwave-assisted procedure for the synthesis of a variety of Shvo-type ruthenium complexes has been developed by reacting Ru3(CO)12 with variously functionalized tetraarylcyclopentadienones under microwave irradiation in MeOH. Ligand precursors have also been prepared under microwave heating by a bis-aldol condensation of 1,3-diphenylacetone with variously functionalized aromatic diketones. All the reactions were very fast and clean, leading to good yields and purities.
Spatially controlled surface immobilization of nonmodified peptides
Pauloehrl, Thomas,Welle, Alexander,Bruns, Michael,Linkert, Katharina,B?rner, Hans G.,Bastmeyer, Martin,Delaittre, Guillaume,Barner-Kowollik, Christopher
supporting information, p. 9714 - 9718 (2013/09/23)
A phencyclone derivative is used to achieve light-controlled immobilization of peptides possessing only natural amino acids. The photoactive precursor (blue in picture) is formed in a Diels-Alder reaction and can undergo light-triggered ring-opening reactions with amines. Successful surface patterning with a genuine c(RGDfK) peptide (green) is evidenced by imaging time-of-flight secondary-ion mass spectrometry (ToF-SIMS). Copyright
DIBENZOANTHRACENE COMPOUND AND ORGANIC LIGHT EMITTING DEVICE HAVING THE SAME
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Page/Page column 15-16, (2008/06/13)
Provided is a novel dibenzo [a, c] anthracene compound having substituents represented by the following structural formula (I), which can be used in an organic light emitting device.