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Study on radiolabeling of 1,2,3-triazole analogs with fac-[^(188)Re(CO)_3 (H_2O)_3 ]^+ via click chemistry

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Nuclear Science and Techniques 2013年第3期24卷 27-30页

作者： WANG Cheng YIN Jilin zhou wei zhang lan zhou Zheng PET/CT center General Hospital of Guangzhou Military Command Shanghai Institute of Applied Physics Chinese Academy of SciencesJiading Campus

Click chemistry was used to study on radiolabeling of 1,2,3-triazole analogs with fac-[188 Re(CO) 3 (H 2 O) 3]+ . CuSO 4 /L-sodium ascorbate was chosen as the catalyst system, three terminal alkynes were conjugated with two different azides respectively, and then the new prepared fac-[188 Re(CO) 3 (H 2 O) 3]+ was coordinated to the six triazoles. The results showed that the radiochemical yields (RCY) of the conjugation of fac-[188 Re(CO) 3]+ with six triazoles were over 90%, and the triazoles showed high stability in phosphate-buffered saline and new-born calf serum. The preliminary biological evaluation results showed that the new 188 Re-labeling method via click chemistry could have general application in labeling bioactive molecules in high radiochemical yield and high specific activity for further SPECT research.

关键词：化学研究三唑类类似物 CO 生物活性评价生物活性分子化学产率催化剂体系

Direct measurement of the concurrence of hybrid entangled state based on parity check measurements

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Chinese Physics B 2019年第1期28卷 205-209页

作者： Man zhang lan zhou wei Zhong Yu-Bo Sheng Institute of Quantum Information and Technology Nanjing University of Posts and TelecommunicationsNanjing 210003China School of Science Nanjing University of Posts and TelecommunicationsNanjing 210003China Key Laboratory of Broadband Wireless Communication and Sensor Network Technology(Ministry of Education) Nanjing University of Posts and TelecommunicationsNanjing 210003China

The hybrid entangled state is widely discussed in quantum information processing. In this paper, we propose the first protocol to directly measure the concurrence of the hybrid entangled state. To complete the measurement, we design parity check measurements(PCMs) for both the single polarization qubit and the coherent state. In this protocol, we perform three rounds of PCMs. The results show that we can convert the concurrence into the success probability of picking up the correct states from the initial entangled states. This protocol only uses polarization beam splitters, beam splitters, and weak cross-Kerr nonlinearities, which is feasible for future experiments. This protocol may be useful in future quantum information processing.

关键词： hybrid entangled state quantum computation parity measurement concurrence

Remote-controlled module-assisted synthesis of O-(2-[^(18)F]fluoroethyl)-L-tyrosine as tumor PET tracer using two different radiochemical routes

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Nuclear Science and Techniques 2006年第3期17卷 148-153页

作者： WANG Ming-wei YIN Duan-Zhi zhang lan zhou wei WANG Yong-Xian Radiopharmaceutical Centre Shanghai Institute of Applied Physics the Chinese Academy of Sciences Shanghai 201800 China

The positron-emitter fluorine-18 labeled amino acid O-(2-[18F]fluoroethyl)-L-tyrosine ([18F]FET) has shown very promising perspectives for brain tumor diagnosis with positron emission tomography (PET). There have been two existing preparation routes of [18F]FET named direct nucleophilic radiofluorination of protected L-tyrosine and radiofluoroalkylation of unprotected L-tyrosine, respectively. A general module was designed specifically for the routine synthesis of [18F]FET, which could be suitable for the present two chemical methods with simple modifica- tions. The fluorinated intermediates and the final product were separated and purified using solid phase extraction (SPE) on the Sep-Pak silica plus cartridge instead of the time-consuming high performance liquid chromatography (HPLC) procedures. The total synthesis time was about 50—60 min with good radiochemical yield (about 20—40%, no-decay-corrected) and good radiochemical purity (more than 97%) for both the synthetic methods.

关键词： PET 氟化作用合成模块正电子发射亲质子

Major complications after radiofrequency ablation for liver tumors:Analysis of 255 patients

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World Journal of Gastroenterology 2009年第21期15卷 2651-2656页

作者： Wen-Tao Kong wei-wei zhang Yu-Dong Qiu Tie zhou Jun-lan Qiu wei zhang Yi-Tao Ding Department of Hepatobiliary Surgery Drum Tower Hospital Medical College of Nanjing University Nanjing 210008 Jiangsu Province China

AIM:To investigate the major complications after radiofrequency ablation(RFA) for the treatment of liver tumors and analyze possible risk factors that precipitate these ***:From March 2001 to April 2008,255 patients with liver tumors(205 male,50 female;age range,18-89 years;mean age,56.0 years) who received RFA were enrolled in this *** these patients,212 had hepatocellular carcinoma,39 had metastatic liver tumors and four had cholangiocellular *** hundred and forty eight patients had a single tumor,and 107 had multiple *** diameter of the tumors ranged 1.3-20 cm(mean,5.1 cm).All patients were treated with a cooled-tip perfusion electrode attached to a radiofrequency generator(Radionics,Burlington,MA,USA).RFA was performed via the percutaneous approach(n = 257),laparoscopy(n = 7),or open surgical treatment(n = 86).The major complications related to RFA were *** resultant data were analyzed to determine risk factors associated these ***:Among the 255 patients,425 liver tumors were treated and 350 RFA sessions were ***-seven(10%) major complications were observed which included 13 cases of liver failure,10 cases of hydrothorax requiring drainage,three casesof tumor seeding,one case of upper gastrointestinal bleeding,one case ofintrahepatic abscess,one case of bile duct injury,one case of cardiac arrest,and five cases of *** patients had more than two *** failure was the most severe complication and was associated with the highest *** patients died due to worsening liver ***-Pugh classification(P = 0.001) and choice of approach(P = 0.045) were related to post-treatment liver failure,whereas patient age,tumor size and number were not significant factors precipitating this ***:RFA can be accepted as a relatively safe procedure for the treatment of liver ***,attention should be paid to possible com

关键词： Complication Hepatocellular carcinoma Metastatic liver tumor Radiofrequency ablation Liverfailure

Massic Heat Capacities of Ammonium Penta-and Tetra-molybdates

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Journal of Central South University 2000年第4期12卷 216-218页

作者： YIN zhou-lan CHEN Qi-yuan zhang Ping-min YUE wei College of Chemistry and Chemical Engineering Central South UniversityChangsha 410083China

Single phases of ammonium penta and tetra molybdates were prepared. The massic heat capacities at normal pre ssure below their decomposition temperatures were measured by drop method. The relationships of the massic heat capacities of ammonium molybdates with those of the decomposition products were also discussed. The results show that the massic heat capacities of ammonium molybdates can be estimated by adding together contributions from their decomposition products, and the less change of chemical bonds, the more accurate of the estimation.

关键词： massic heat capacity ammonium pentamolybdate ammonium tetramolybdate drop method

New geographic distribution and molecular diversity of Citrus chlorotic dwarf-associated virus in China

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Journal of Integrative Agriculture 2022年第1期21卷 293-298页

作者： YANG Zhen zhang lan ZHAO Jin-fa zhang Xing-kai WANG Ying LI Tai-sheng zhang wei zhou Yan National Citrus Engineering and Technology Research Center Citrus Research InstituteSouthwest UniversityChongqing 400712P.R.China Horticulture Research Institute Guangxi Academy of Agricultural SciencesNanning 530000P.R.China Plant Protection Station of Sichuan Agriculture and Rural Bureau Chengdu 610041P.R.China

In 2009, an emerging citrus viral disease caused by Citrus chlorotic dwarf-associated virus(CCDaV) was discovered in Yunnan Province of China. However, the occurrence and spread of CCDaV in other citrus-growing provinces in China is unknown to date. To better understand the distribution and molecular diversity of CCDaV in China, a total of 1 772 citrus samples were collected from 11 major citrus-growing provinces and were tested for CCDaV by PCR. Among these, 134 citrus samples from Guangxi, Yunnan and Guangdong were tested positive for CCDaV, demonstrating that the occurrence and spread of CCDaV are increasing in China. The complete genome sequences of 17 CCDaV isolates from different provinces and hosts were sequenced. Comparisons of the whole-genome sequences of the 17 CCDaV isolates as well as the 15 isolates available in GenBank revealed that the sequence identity was about 99–100%, showing that the CCDaV isolates were highly conserved. Phylogenetic studies showed that the 32 CCDaV isolates belonged to four different groups based on geographical origins and host species, and that CCDaV isolates from China and Turkey were clustered into different groups. The results provide important information for clarifying the distribution and genetic diversity of CCDaV in China.

关键词： Citrus chlorotic dwarf-associated virus detection sequence alignments phylogenetic tree analysis

Electronic Structure and Circular Dichroism of Natural Alboatisins Isolated from Aerial Parts of Isodon Albopilosus: DFT and TDDFT Study

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Chinese Journal of Chemical Physics 2015年第6期28卷 -页

作者： Gao-zhang Gou Bo zhou Ling Shi Shao-ming Chi Xian-lan Chen wei Liu School of Science Honghe University Mengzi 661199 ChinaKey Laboratory of Natural Pharmaceutical and Chemical Biology of Yunnan Province Mengzi 661199China School of Science Honghe University Mengzi 661199 China College of Chemistry and Chemical Engineering Yunnan Normal University Kunming 650500China

The stable conformations of a series of bioactive molecules, (−)-alboatisins A–C, are identified via Monte Carlo searching with the MMFF94 molecular mechanics force field. Then, the optical rotation (OR) values, vibrational circular dichroism (VCD), and electronic circular dichroism (ECD) spectra were calculated using the gradient-corrected density functional theory method. The vibrational and transition modes of molecular chirality were explored in terms of their microscopic origin. The calculated specific rotations are in agreement with the experimental values. From the OR analysis, it was concluded that optical rotation values are regulated by hydroxyl substitution. Vibrations occurring on the chiral skeleton may cause strong absorption in VCD spectra; VCD spectra are thus the spectral response to deformation vibrations on the chiral carbon skeleton. The lowest-energy negative Cotton effect is caused by σ → π* transition. Frontier molecular orbital analysis showed that strong ECD absorptions are produced when the dominant transition on the chiral skeleton is asymmetric; ECD spectra show the result of transitions lacking asymmetry on the chiral skeleton.

关键词： Alboatisin Optical activity Density functional theory Circular dichroism Cotton effect

Ternary Organic Solar Cells Based on Two Non-fullerene Acceptors with Complimentary Absorption and Balanced Crystallinity

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Chinese Journal of Chemistry 2020年第9期38卷 935-940页

作者： lan Xie Chen Yang Ruimin zhou Zhen Wang Jianqi zhang Kun Lu Zhixiang wei CAS Key Laboratory of Nanosystem and Hiearchical Fabrication CAS Center for Exelence in NonoscienceNational Center for Nonoscience ond Technology Beijing 100190China University of Chinese Academy of Sciences Bejing 100049China Sino-Danish College University of Chinese Academy of SciencesBeijing 100190China

Summary of main observation and conclusion The ternary blend structure has been demonstrated as an effective approach to increase the power conversion efficiency of organic solar *** effective approach to enhance the power conversion efficiency of ternary solar cells is based on two non-fullerene acceptors with complimentary absorption range and balanced *** this work,we have introduced a high crystallinity small-molecule acceptor,named C8IDTT-4CI with appropriate alkyl side chains into a low crystalline blend of conjugated polymer donor PBDT-TPD and fused-ring electron acceptor ITIC-4F.A ternary device based on the blend PBDT-TPD:1TIC-4F:C81DTT-4CI exhibits a best power conversion efficiency of 9.51%with a simultaneous improvement of the short-circuit current density to 18.76 mA-cm^-2 and the fill factor up to 67.53%.The absorption onset for C8IDTT-4CI is located at 900 nm,so that the well complementary light absorption is beneficial to the *** addition,the existence of high crystallinity C8IDTT-4CI in the ternary device is found helpful to modulate crystallinity,improve heterojunction morphologies and stacking structure,therefore to realize higher charge mobility and better performance.

关键词： ternary absorption acceptor

Pleated polymeric foldamers driven by donor–acceptor interaction and conjugated radical cation dimerization

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Chinese Chemical Letters 2016年第6期27卷 817-821页

作者： Yun-Chang zhang lan Chen Hui Wang Ya-Ming zhou Dan-wei zhang Zhan-Ting Li Department of Chemistry Fudan University

Two naphthalene（NP） and bipyridinium（BIPY^2＋） alternately incorporated polymers P1 and P2 have been prepared through the formation of dynamic hydrazone bonds. The polymers formed NP–BIPY^2＋donor–acceptor interaction-induced pleated secondary structure. Upon reducing the BIPY^2＋units to radical cation BIPY＋, intramolecular dimerization of the BIPY＋units induced the backbones to afford another pleated secondary structure. Adding electron-rich macrocyclic polyether bis-1,5-dinaphtho[38]crown-10 or electron-deficient cyclobis（paraquat-p-phenylene） cyclophane did not break the first foldamer by complexing the BIPY^2＋or NP units of the polymers, whereas the di（radical cationic）ring of the second cyclophane could break the second foldamer by forming threading complexes with the BIPY＋units of the polymers.

关键词： Foldamer Donor–acceptor interaction Conjugated radical cation dimerization Bipyridinium Dynamic covalent chemistry