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951.
Unimolecular binary half-adders with orthogonal chemical inputs 总被引:1,自引:0,他引:1
Unimolecular half-adders based upon an arylvinyl-bipyridyl fluorophore platform were demonstrated where all the chemical input combinations were fully processed by half-adder molecules to generate the arithmetic results of the entire truth table. 相似文献
952.
Urinary excretion study of coenzyme Q10 in rats by ultra-performance liquid chromatography-mass spectrometry 总被引:1,自引:0,他引:1
A method based on ultra-performance liquid chromatography mass spectrometry (UPLC-MS) applying atmospheric pressure chemical ionization in the positive ion mode is developed for the determination of coenzyme Q10 (CoQ10) in rat urine. The assay involves the extraction of crude urine, fast liquid chromatography on a Waters Acquity UPLC BEH C18 column (1.7 microm, 1.0 x 50 mm), and selected ion monitoring detection using mass transition. The calibration range is found to be 0.05-25 microg/mL, with the lower limit of quantitation of 0.05 microg/mL. Intra- and inter-day precision (relative standard deviation) for CoQ10 in rat urine range from 0.7% to 15%, and accuracy expressed in recovery rates in urine is between 83% and 118%. The recovery of this method is found to be between 80% and 95% at three concentrations. The total cumulative recovery of CoQ10 is 1.16 +/- 1.05% (percentage of dose intake, n = 4) from rat urine collected over 30 h after oral administration of the drug. The UPLC-MS method described allows the quick determination of CoQ10 in rat urine with good precision and accuracy. It is suitable for further excretion studies of CoQ10 in animals. 相似文献
953.
Di CA Yu G Liu Y Xu X Wei D Song Y Sun Y Wang Y Zhu D Liu J Liu X Wu D 《Journal of the American Chemical Society》2006,128(51):16418-16419
The characteristics of organic field-effect transistors (OFETs) were dramatically improved by chemically modifying the surface of the bottom-contact Ag or Cu source-drain (D-S) electrodes with a simple solution method. The contact resistance and energetic mismatch typically observed with Ag D-S electrodes in pentacene bottom-contact OFETs can be properly eliminated when modified by the Ag-TCNQ (TCNQ = 7,7,8,8-tetracyanoquinodimethane). The pentacene transistors with low-cost Ag-TCNQ-modified Ag bottom-contact electrodes exhibit outstanding electrical properties, which are comparable with that of the Au top-contact devices. It thus provides a novel way toward high-performance low-cost bottom-contact OFETs. 相似文献
954.
[reaction: see text] The coupling reaction of pinacolborane with aryl iodides under the catalysis of 10 mol % CuI and the action of sodium hydride in THF works at room temperature to provide corresponding arylboronates in good yields. Aryl bromides give poor conversion under these reaction conditions. 相似文献
955.
Liu R Zong W Jin K Lu X Zhu J Zhang L Gao C 《Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy》2008,70(1):198-200
By using the techniques of resonance light scattering (RLS) and absorption spectra, we studied the toxicosis and detoxifcation mechanism of anionic surfactant SDBS and cationic surfactant CTMAB targeted to bovine serum albumin (BSA). Small quantity of CTMAB combines with SDBS-BSA complex to form SDBS-BSA-CTMAB complex and the IRLS of system enhanced greatly. With the cumulation of quantity, CTMAB captures SDBS from SDBS-BSA complex by electrostatic attraction and CTMAB-SDBS complex forms, meanwhile BSA automatically frees, which is corresponding to the toxicosis and detoxifcation process. Absorption experiment validates that SDBS induces the denaturalization of BSA and CTMAB facilitates the refolding of this protein. 相似文献
956.
Xu Xiang-Yun Gao Yu-Tong Wang Ying-Ying Zhou You-Shuang Xiong Bi-Jin Zhu Jin-Tao 《高分子科学》2023,41(6):897-904
Chinese Journal of Polymer Science - Miscible disordered block copolymers (BCPs) are rarely studied due to the limits in self-assembly into ordered microstructures. Herein, we proposed a facile... 相似文献
957.
The Role of Processing Solvent on Morphology Optimization for Slot-Die Printed Organic Photovoltaics
Wang Lei Zhan Jun-Zhe Zhong Wen-Kai Zhu Lei Zhou Guan-Qing Hao Tian-Yu Zou Ye-Cheng Wang Zhen-Hua Wei Gang Zhang Yong-Ming Liu Feng 《高分子科学》2023,41(6):842-850
Chinese Journal of Polymer Science - The morphology manipulation of the active layers is important for improving the performance of organic photovoltaics (OPVs). The choice of processing solvent... 相似文献
958.
采用Rajagopal和Wineman所提出本构方程,对电流变液在二维平行平板间非零压力梯度Couette流动的线性稳定性问题进行研究.通过分析和数值计算发现,任何壁面运动都将使流动稳定性增强.在外加电场存在的情况下,电流变液效应也将使流动稳定性增强. 相似文献
959.
[reaction: see text]. Protein and peptide conjugates such as glycopeptides, prenylated peptides, and lipopeptides play essential roles in biology. A rapid and convergent entry into a variety of these compounds is described. The methodology involves the introduction of a dehydroalanine into peptides and subsequent chemoselective conjugate addition of an appropriate thiolate nucleophile, including farnesylthiolate or thioglycosides. 相似文献
960.
Polynuclear Pd(II) and Ni(II) complexes of macrocyclic polyamine 3,6,9,16,19,22‐hexaazatricyclo[22.2.2.211,14]‐triaconta 11,13,24,26(l),27,29‐hexaene (L) in solution were investigated by electrospray ionization mass spectrometry (ESIMS). For methanol solution of complexes M2LX4 (M = Pd(II) and Ni(II), X= Cl and I), two main clusters of peaks were observed which can be assigned to [M2LX3]+ and [M2LX2]2+. When Pd2LCl4 was treated with 2 or 4 mol of AgNO3, it gave rise formation of Pd2LCl2 (NO3)2 · H2O and [Pd2L(H2O)m(NO3)n](4‐n)+, respectively. ESMS spectra show that the dissociation of the former in the ionization process gave peaks of [Pd2LCl2]2+ and [(Pd2LCl2)NO3]+, while dissociation of the later gave the peaks of [Pd2L(CH3CO2)2]2+ and [Pd2L(CH3CO2)2](NO3) + in the presence of acetic acid. Similar species were observed for Pd2LI4 when treated with 4 mol of AgNO3. When [Pd2L · (H2O)m(NO3)n](4‐n)+ reacted with 2 mol of oxalate anions at 40°C, [Pd4L2(C2O4)2(NO3)2]2+ and [Pd4L2(C2O4)2 (NO3)]3+ were detected. This implies the formation of square‐planar molecular box Pd4L2(C2O4)2(NO3)4 in which C2O4? may act as bridging ligands as confirmed by crystal structure analysis. The dissociation form and the stability of complex cations in gaseous state are also discussed. This work provides an excellent example of the usefulness of ESIMS in the identification of metal complexes in solution. 相似文献