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Online since: December 2012
Authors: Xiao Xiao Zhuang, Xiao Xia Sun, Xiao Long Lei
The synthesis of novel Oligomer 4,8-Di(4-hexyl-2-thienyl)-2λ4δ2-benzo[1,2-c;4,5-c’]bis[1,2,5]-thiadiazole ZHUANG Xiaoxiao1,a, Lei Xiaolong1,b, SUN Xiaoxia1,c*, 1Jiangxi Key Laboratory of Organic Chemistry, Jiangxi Science and Technology Normal University, Nanchang 330013, People’s Republic of China azhuangxiaoxiao1987@163.com; bleixiaolong@126.com; csunxiaoxia77@126.com; Keywords: Low-Bandgap; Donor-acceptor; stille couplling Abstract:Heterocyclic oligomer based on BBT bearing solubilizing side chains have been synthesized in high yields over six steps from readily available starting materials.
We have developed a short and high yielding route to the dibromo-BBT 15 and its dithienyl adduct 4 (DBBT) Figure 1 Structures of 4,8-dibromo-BBT and some low bandgap 4,8-disubstituted BBT derivatives 2 Experimental Section Characterization: 1H NMR and 13C NMR spectra were collected on a Bruker AM-500WB spectrometer in chloroform-d as solvent and tetramethylsilane (TMS) as the internal standard.
Online since: August 2014
Authors: Iman Golshokouh, Samion Syahrullail, Farid Nasir Ani
This increase is due to the breakdown of the fatty acid chain in the PFAD oil’s structure at lower speeds [16, 17].
Erhan, Friction behavior of some seed oils: biobased lubricant applications, Industrial & engineering chemistry research, 2006. 45(10): p. 3735-3740
Online since: January 2013
Authors: Hong Shao, Di Zhang, Wei Gao, Zi Ru Liu, Wen Ze Li
The structure is loose.
Chemistry World,vol,26.pp 148-152, 2007
Online since: April 2014
Authors: Najiah Nadir, Zaharah Wahid, Mat Tamizi Zainuddin, Noor Zalikha Mohamed Islam
This repulsive force interrupt the magnitude of stability in benzopyran cyclic within 6-nitro BIPS and consequently allowed the photoisomerization of open structure at C-O bond in benzopyran at lower energy and longer wavelength as observed in 8-ethoxy-6-nitro BIPS.
McGarvey, Industry-linked context-based chemistry practicals, New Directions (2006) 57-64
Online since: February 2006
Authors: Nozomu Toyohara, Keizo Uematsu, Satoshi Tanaka, Takayuki Komatsu, Takumi Fujiwara, Yoshihiro Takahashi, Yasuhiko Benino
Improvement of Second-Order Optical Nonlinearity in Transparent Ba2TiGe2O8 Crystallized Glasses Prepared in High Magnetic Field Nozomu Toyohara1,a, Yasuhiko Benino1, Takumi Fujiwara1, Satoshi Tanaka 1, Keizo Uematsu1, Yoshihiro Takahashi2 and Takayuki Komatsu1,b 1 Department of Chemistry, Nagaoka University of Technology Kamitomioka-cho, Nagaoka, 940-2188, Japan 2 International Center for Young Scientists, National Institute for Materials Science, Tsukuba, 305-0044, Japan a woscg@amorph.chem.nagaokaut.ac.jp, bkomatsu@chem.nagaokaut.ac.jp Key words: Glass-ceramics, Crystal orientation, High magnetic field, Second-order optical nonlinearity Abstract.
The XRD peaks in these samples are assigned to the ferroelastic Ba2TiGe2O8 crystalline phase with an orthorhombic structure (space group: Cmm2) [2,9].
Online since: June 2014
Authors: Hong Zhou, You Ping Li, Tao Tao Kan, Hui Fang Liu
Spatiotemporal variations and evaluations of ambient PM10 concentrations in Nanchong city, China Youping Li1, a, Hong Zhou1, b, Taotao Kan2, c, Huifang Liu1, d 1College of Chemistry and Chemical Engineering, China West Normal University, Nanchong 637009, China; 2CNOOC  EnerTech-Drilling & Production Co.
But the concentrations were lower than the second-level at SW, GP and JL and the concentrations at LY presented a downward tendency from 2008 to 2012, which were related to government efforts of strengthening management and monitoring vehicle exausts, changing energy structure and pursuing cleaning production process.
Online since: November 2014
Authors: Peng Liu, Qi Tang, Jian Xun Tang
There exist a large number of discrete variables which are used to describe the process structure among optimization variables, so the problem is featured by large-scale combinatorial optimization.
Yan, W.Wu: Industrial and Engineering Chemistry Research Vol. 51(2012), p. 8535- 8549
Online since: April 2015
Authors: Aleksey Adamtsevich, Andrey Pustovgar, Yuriy Mazalov, Viktor Grigorev, Aleksandr Vedenin
However, due to the resin granules large diameter (0.6-0.8 mm), the diffusion resistance to the oxidation movement has arisen in their porous structure, what significantly slowed the hydrothermal destruction process.
Berlin, Stability of disperse systems, Doklady Chemistry. 427 (1) (2009) p. 179-182.
Online since: December 2024
Authors: Tuan Anh Nguyen, Bao Tram Dang Ngoc, Kim Ngoc Tran
This is because that pigments have taken a long time to penetrate into fabric structure in addition to other impacts such as high temperature as well as strong vabrations.
Gutiérrez Montiel, "Bougainvillea glabra Choisy (Nyctinaginacea): review of phytochemistry and antimicrobial potential," Frontiers in Chemistry, vol. 11, p. 1276514, 2023
Online since: April 2015
Authors: Ji Shan Zhang, Lin Zhong Zhuang, Qing Ling Bai, Hong Xiang Li, Qiang Du, Jun Cheng Liu, Yue Li
Hot Tearing Evaluation and Contraction Behaviors of Four AA7xxx Alloys Qingling Bai1, a, Juncheng Liu1, b, Yue Li1, c, Hongxiang Li1, d*, Qiang Du2, e, Jishan Zhang1, f and Linzhong Zhuang1, g 1State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, Beijing, China 2SINTEF Materials and Chemistry, Trondheim, Norway abaiql123@sina.com, bliujuncheng9401@163.com, cs20131568@xs.ustb.edu.cn dhxli@skl.ustb.edu.cn, eQiang.Du@sintef.no, fzhangjs@skl.ustb.edu.cn, glinzhongzhuang@yahoo.com Keywords: Hot tearing susceptibility, AA7×××, Thermal contraction, Consistency.
Katgerman, Effects of Alloy Composition and Casting Speed on Structure Formation and Hot Tearing during Direct-Chill Casting, Metall.