97765-22-5Relevant academic research and scientific papers
Hypercrosslinked porous organic polymers based on tetraphenylanthraquinone for CO2 uptake and high-performance supercapacitor
Danko, Martin,EL-Mahdy, Ahmed F. M.,Huang, Chih-Feng,Kuo, Shiao-Wei,Mansoure, Tharwat Hassan,Mohamed, Mohamed Gamal,Xin, Zhong,Zhang, Xian
, (2020)
We successfully synthesized two different kinds of hyper-crosslinked porous organic polymers (CPOPs) based on tetraphenylanthraquinone units by a reaction of 9,10-bis(diphenylmethylene)- 9,10-dihydroanthracene (An-4Ph) as the building unit with formaldehyde dimethyl acetal and 2,4,6-trichloro-1,3,5-triazine as two external crosslinkers by using a simple and friendly one-step Friedel?Crafts polymerization in the presence anhydrous FeCl3 as a catalyst to afford An-CPOP-1 and An-CPOP-2 as a black solid with high yield, respectively. Fourier-transform infrared (FTIR) and NMR spectroscopy were confirmed the chemical structures of the synthesized monomers and the corresponding polymers. Both An-CPOP-1 and An-CPOP-2 showed amorphous character, outstanding thermal stability, and high BET surface area (up to 1000 m2/g) with microporosity and mesoporosity architectures based on XRD, TGA analyses and N2 adsorption/desorption measurements. Interestingly, TEM and SEM images revealed that An-CPOP-1 had regular tubular nanotubes structure without using template or surfactant or carbonization at the elevated temperature. The as-prepared An-CPOP-2 exhibited a high specific capacitance of 98.4 F g?1 at a current density of 0.5 A g?1 and excellent cycling stability (95.3percent capacitance retention over 2000 cycles), which could be used as good material for energy storage application.
Aggregation-induced emission and aggregation of bis (-diaryl methylene)- dihydropentacene compounds to promote photochromic
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Paragraph 0111-0114; 0117-0120, (2020/04/30)
The invention provides a series of novel bi(diaryl methylene)-dihydro acene compounds having aggregation-induced emission characteristics and application of the same in organic photochromic materials.
Contorted tetrabenzocoronene derivatives for single crystal field effect transistors: Correlation between packing and mobility
Pola, Someshwar,Kuo, Chi-Hsien,Peng, Wei-Tao,Islam, Md. Minarul,Chao, Ito,Tao, Yu-Tai
scheme or table, p. 2566 - 2571 (2012/09/22)
A series of contorted tetrabenzo[a,d,j,m]coronenes (TBCs) substituted with four fluoro-, chloro-, or methyl groups at 2,7,12,17-positions were synthesized and characterized. Except for the one with methyl substituents, which exhibits a shifted π-π stacking, the rest all show cofacial π-π stacking with small parallel displacements. One-dimensional growth along the stacking direction was observed in the single crystals for all derivatives. A systematic comparison of the crystal packing and the calculated electronic coupling/mobility with the measured field-effect mobility for single-crystal field-effect transistors shows a good correlation.
Synthesis, self-assembly, and charge transporting property of contorted tetrabenzocoronenes
Zhang, Xiaojie,Jiang, Xiaoxia,Zhang, Kai,Mao, Lu,Luo, Jing,Chi, Chunyan,Chan, Hardy Sze On,Wu, Jishan
experimental part, p. 8069 - 8077 (2011/02/25)
A facile route has been developed for the preparation of a new family of contorted 1.2,3.4,7.8,9.10-tetrabenzocoronenes (TBCs). A two-step cyclization reaction, i.e., oxidative photocyclization followed by FeCl3-mediated intramolecular cyclodehydrogenation, was carried out on the olefin precursors to obtain the final TBC compounds. These new TBC molecules have contorted conformation due to steric overcrowding as disclosed by single-crystal crystallographic analysis. Nevertheless, they showed extended π-conjugation compared with coronene and exhibited strong aggregation in solution. The thermal behavior and self-assembly of TBC-C8 in solid were studied by a combination of thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), powder X-ray diffraction (XRD), scanning electron microscope (SEM), and transmission electron microscope (TEM). Compound TBC-C8 showed very good thermal and photostability and exhibited long-range ordered π-stacking in the bulk state. Moreover, uniform nanofibers with tens of micrometer length are formed in the drop-casted thin films. TBC-C8 also possesses a desirable HOMO energy level (-5.10 eV), which allows efficient charge injection from electrodes such as gold electrode. The charge carrier mobilities were determined by using the space-charge limited-current (SCLC) technique and high average hole mobility of 0.61 cm2 V-1 s-1 was obtained for TBC-C8.
