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Yang Y, Lv L, Liu Y, Chen B, Liu J, Li X, Luo S. Complexes of Th(IV) with neutral O-N-N-O hybrid ligands: a thermodynamic and crystallographic study. Dalton Trans 2021; 50:705-714. [PMID: 33346260 DOI: 10.1039/d0dt03479g] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The thermodynamics of Th(iv) complexes with N,N,N',N'-tetramethyl-2,2'-bipyridine-6,6'-dicarboxamide (TMBiPDA) and N,N,N',N'-tetramethyl-1,10-phenanthroline-2,9-dicarboxamide (TMPhenDA) in CH3OH/10%(v)H2O (CH3OH : H2O = 9 : 1 by volume) were determined by spectrophotometry and calorimetry. The ligand TMBiPDA/TMPhenDA coordinates with the central Th atom by the tetradentate (O-N-N-O) mode, which is validated by 1H NMR in solution and crystallography in the solid. The single crystal X-ray diffraction data show that ten-coordinated thorium coordinates with two ligand molecules and two solvent molecules (water or methanol). Both ThL and ThL2 complexes (L = TMPhenDA or TMBiPDA) were detected in solution. In thermodynamics, the formation of all complexes is driven by both enthalpy and entropy. In a comparison, enthalpy is more favorable to the formation of TMBiPDA complexes, while entropy is more favorable to the formation of TMPhenDA complexes; the entropy advantages of the TMPhenDA complexes override the enthalpy advantages of the corresponding TMBiPDA complexes, giving the TMPhenDA complexes higher stability constants than the TMBiPDA complexes. In crystallography, ligand distortions occur in ThL2 complexes, and TMBiDA distorts more than TMPhenDA does; the Th-O and Th-N bonds involving TMBiPDA are slightly shorter than those involving TMPhenDA.
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Affiliation(s)
- Yanqiu Yang
- Institute of Nuclear Physics and Chemistry, CAEP, Mianyang, Sichuan 621900, China.
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2
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Chen W, Chen B, Liu B, Yang Y, Tu J, Wei H, Yang Y, Li X, Luo S. Uranium(VI) complexation with trans-1,2-cyclohexanediaminetetraacetic acid in solution: thermodynamic and structural studies. J COORD CHEM 2020. [DOI: 10.1080/00958972.2020.1855430] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Wen Chen
- Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang, China
| | - Baihua Chen
- Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang, China
| | - Bijun Liu
- Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang, China
| | - Yuchuan Yang
- Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang, China
| | - Jun Tu
- Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang, China
| | - Hongyuan Wei
- Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang, China
| | - Yanqiu Yang
- Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang, China
| | - Xingliang Li
- Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang, China
| | - Shunzhong Luo
- Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang, China
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Li X, Zhang Z, Liu B, Mu W, Yang Y, Martin LR, Luo S, Rao L. Complexation of Light Trivalent Lanthanides with N-(2-Hydroxyethyl)ethylenediamine- N, N', N'-triacetic Acid in Aqueous Solutions: Thermodynamic Analysis and Coordination Modes. Inorg Chem 2019; 58:15618-15628. [PMID: 31674777 DOI: 10.1021/acs.inorgchem.9b02706] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
N-(2-Hydroxyethyl)ethylenediamine-N,N',N'-triacetic acid (HEDTA, denoted as H3L) is a strong chelating ligand that is widely used in the separation of f elements as relevant to the nuclear fuel cycle. There is much to be known about the structure and composition of the coordination sphere of the complexes of HEDTA with lanthanides. The complexation of HEDTA with light lanthanides (La3+, Nd3+, and Eu3+) was investigated thermodynamically and structurally in aqueous solutions. Potentiometry and microcalorimetry were performed to acquire the complexation constants (25-70 °C) and enthalpies (25 °C), respectively, at I = 1.0 mol·L-1 NaClO4. Coordination modes of the complexes were analyzed by luminescence spectroscopy and NMR spectroscopy. The results indicate that there are two successive Ln3+/HEDTA complexes, LnLaq and Ln2(H-1L)22- (Ln3+ refers to La3+, Nd3+, and Eu3+; H-1L4- refers to deprotonation of the hydroxyl group) during titration. The hydroxyl group of HEDTA is coordinated in the Ln3+/HEDTA complex. The dinuclear Ln2(H-1L)22- complex is present as a carboxyl-bridged centrosymmetric dimer, and two carboxyl groups in bridging positions are coordinated to two adjacent Ln3+ cations. Complexation of NdLaq is exothermic, while formation of the hydrolytic complex Nd2(H-1L)22- is endothermic. Both NdLaq and Nd2(H-1L)22- complexes are driven by entropic force. These data will help to predict the behavior of lanthanides in the separation process, where HEDTA is used as the aqueous complexant.
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Affiliation(s)
- Xingliang Li
- Institute of Nuclear Physics and Chemistry , China Academy of Engineering Physics , Mianyang , Sichuan 621999 , China
| | - Zhicheng Zhang
- Chemical Sciences Division , Lawrence Berkeley National Laboratory , Berkeley , California 94720 , United States
| | - Bijun Liu
- Institute of Nuclear Physics and Chemistry , China Academy of Engineering Physics , Mianyang , Sichuan 621999 , China
| | - Wanjun Mu
- Institute of Nuclear Physics and Chemistry , China Academy of Engineering Physics , Mianyang , Sichuan 621999 , China
| | - Yuchuan Yang
- Institute of Nuclear Physics and Chemistry , China Academy of Engineering Physics , Mianyang , Sichuan 621999 , China
| | - Leigh R Martin
- Nuclear Security & Isotope Technology Division , Oak Ridge National Laboratory , Oak Ridge , Tennessee 37831 , United States
| | - Shunzhong Luo
- Institute of Nuclear Physics and Chemistry , China Academy of Engineering Physics , Mianyang , Sichuan 621999 , China
| | - Linfeng Rao
- Chemical Sciences Division , Lawrence Berkeley National Laboratory , Berkeley , California 94720 , United States
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Chen B, Liu J, Lv L, Yang L, Luo S, Yang Y, Peng S. Complexation of Lanthanides with N,N,N′,N′-Tetramethylamide Derivatives of Bipyridinedicarboxylic Acid and Phenanthrolinedicarboxylic Acid: Thermodynamics and Coordination Modes. Inorg Chem 2019; 58:7416-7425. [DOI: 10.1021/acs.inorgchem.9b00545] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Baihua Chen
- Institute of Nuclear Physics and Chemistry, CAEP, Mianyang, Sichuan 621900, China
| | - Jun Liu
- Institute of Nuclear Physics and Chemistry, CAEP, Mianyang, Sichuan 621900, China
| | - Lina Lv
- Institute of Nuclear Physics and Chemistry, CAEP, Mianyang, Sichuan 621900, China
| | - Liang Yang
- Institute of Nuclear Physics and Chemistry, CAEP, Mianyang, Sichuan 621900, China
| | - Shunzhong Luo
- Institute of Nuclear Physics and Chemistry, CAEP, Mianyang, Sichuan 621900, China
| | - Yanqiu Yang
- Institute of Nuclear Physics and Chemistry, CAEP, Mianyang, Sichuan 621900, China
| | - Shuming Peng
- Institute of Nuclear Physics and Chemistry, CAEP, Mianyang, Sichuan 621900, China
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5
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Yang Y, Zhang Z, Yang L, Liu J, Xu C, Luo S, Rao L. Complexation of U(VI) with BiPDA, DmBiPDA, and PhenDA: Comparison on Structures and Binding Strengths in Aqueous and DMSO/20%(v)H2O Solutions. Inorg Chem 2019; 58:6064-6074. [DOI: 10.1021/acs.inorgchem.9b00319] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Yanqiu Yang
- Institute of Nuclear Physics and Chemistry, CAEP, Mianyang, Sichuan 621900, China
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Zhicheng Zhang
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Liang Yang
- Institute of Nuclear Physics and Chemistry, CAEP, Mianyang, Sichuan 621900, China
| | - Jun Liu
- Institute of Nuclear Physics and Chemistry, CAEP, Mianyang, Sichuan 621900, China
| | - Chao Xu
- Collaborative Innovation Center of Advanced Nuclear Energy Technology, Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, China
| | - Shunzhong Luo
- Institute of Nuclear Physics and Chemistry, CAEP, Mianyang, Sichuan 621900, China
| | - Linfeng Rao
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
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Chen W, Liu B, Mu W, Yu Q, Tian Y, Tu J, Li X, Yang Y, Wei H, Luo S. Complex formation of anserine with uranyl in aqueous solution: Thermodynamic studies and structural analysis. Microchem J 2018. [DOI: 10.1016/j.microc.2018.07.018] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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7
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Li X, Zhang Z, Martin LR, Luo S, Rao L. Complexation of Uranium(VI) with N-(2-Hydroxyethyl)ethylenediamine- N, N', N'-triacetic Acid in Aqueous Solution: Thermodynamic Studies and Coordination Analyses. Inorg Chem 2018; 57:7684-7693. [PMID: 29916703 DOI: 10.1021/acs.inorgchem.8b00655] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
N-(2-Hydroxyethyl)ethylenediamine- N, N', N'-triacetic acid (HEDTA, denoted as H3L in this work, and the three dissociable protons represent those of the three carboxylic groups) is a strong chelating ligand and plays an important role in the treatment and disposal of nuclear wastes as well as separation sciences of f-elements. In this work, the complexation of HEDTA with U(VI) was studied thermodynamically and structurally in aqueous solutions. Potentiometry and microcalorimetry were used to measure the complexation constants (298-343 K) and enthalpies (298 K), respectively, at I = 1.0 mol·L-1 NaClO4. Thermodynamic studies identified three 1:1 U(VI)/HEDTA complexes with different degrees of deprotonation, namely, UO2(HL)(aq), UO2L-, and UO2(H-1L)2-, where H-1 represents the deprotonation of the hydroxyl group. The results indicated that all three complexation reactions are endothermic and driven by entropy only. Coordination modes of the three complexes were investigated by NMR and extended X-ray absorption fine structure spectroscopies. In the UO2(HL)(aq) complex, HEDTA holds a tridentate mode, and the coordination occurs to the end of the ethylenediamine backbone. Two oxygens of the two carboxylic groups and one nitrogen of the amine group participate in the coordination. In both UO2L- and UO2(H-1L)2-, HEDTA holds a tetradentate mode and coordinates to U(VI) along the side of the ethylenediamine backbone. The difference is that in the UO2(H-1L)2- complex, the alkoxide form of the HEDTA hydroxyl group directly binds to the U(VI) atom, forming a highly strong chelation.
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Affiliation(s)
- Xingliang Li
- Chemical Sciences Division , Lawrence Berkeley National Laboratory , Berkeley , California 94720 , United States.,Institute of Nuclear Physics and Chemistry , China Academy of Engineering Physics , Mianyang , Sichuan 621999 , China
| | - Zhicheng Zhang
- Chemical Sciences Division , Lawrence Berkeley National Laboratory , Berkeley , California 94720 , United States
| | - Leigh R Martin
- Aqueous Separations and Radiochemistry Department , Idaho National Laboratory , PO Box 1625, Idaho Falls , Idaho 83415 , United States
| | - Shunzhong Luo
- Institute of Nuclear Physics and Chemistry , China Academy of Engineering Physics , Mianyang , Sichuan 621999 , China
| | - Linfeng Rao
- Chemical Sciences Division , Lawrence Berkeley National Laboratory , Berkeley , California 94720 , United States
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8
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Song H, Wang Y, Wang J, Wang G, He J, Wei H, Luo S. Preparation and biodistribution of 131I-labeled graphene quantum dots. J Radioanal Nucl Chem 2018. [DOI: 10.1007/s10967-018-5804-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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9
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Song H, Wang G, Wang J, Wang Y, Wei H, He J, Luo S. 131I-labeled 5,10,15,20-tetrakis(4-hydroxyphenyl)porphyrin and 5,10,15,20-tetrakis(4-aminophenyl)porphyrin for combined photodynamic and radionuclide therapy. J Radioanal Nucl Chem 2018. [DOI: 10.1007/s10967-018-5735-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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10
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Lü L, Liu J, Yang Y, Li K, Hu S, Luo S. Complexation of a macrocyclic ligand, 2,6-di (N-methyl)formamide-calix[4]pyridine, with Eu(III) and extraction of Eu(III) and Am(III). RADIOCHIM ACTA 2017. [DOI: 10.1515/ract-2017-2852] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
Complexation of a new macrocyclic compound, 2,6-dimethylformamide-calix[4]pyridine (L1
), with Eu(III) was studied by spectrophotometry. Stability constants of the Eu(III)/L1
complex in different solvents were determined. The results reveal that L1
forms moderately strong complexes with Eu(III) and other lanthanides in aprotic solvents and shows little binding ability with transition metals. Moreover, the binding strength of L1
weakens significantly in protic solvents. Using 2-bromodecanoic acid as the synergistic reagent, L1
extracts Am(III) and Eu(III) successfully with a separation factor of SFAm/Eu=1.3, and the distribution ratios of Am(III) and Eu(III) increases as the aqueous acidity is decreased. DFT computational studies were conducted to corroborate the solvent extraction data, and compare the coordination properties of Am(III)/Eu(III) complexes with L1
and a related, 2,6-diformamide-calix[4]pyridine (L2
). The computational results suggest that L2
could form stable complexes [ML]3+ and ML(NO3)3 [where M represent Am(III) or Eu(III)] in aqueous phase, in sharp contrast to the case of L1
where such complexes in aqueous phase are not stable.
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Affiliation(s)
- Lina Lü
- Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics , Mianyang 621900 , China
| | - Jun Liu
- Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics , Mianyang 621900 , China
| | - Yanqiu Yang
- Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics , Mianyang 621900 , China
| | - Kun Li
- College of Chemistry, Sichuan University , Chengdu 610064 , China
| | - Sheng Hu
- Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics , Mianyang 621900 , China
| | - Shunzhong Luo
- Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics , Mianyang 621900 , China
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11
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Song H, Wang Y, Wang G, Wei H, Luo S. Ultrathin two-dimensional MnO2 nanosheet as a stable coreactant of 3,3′,5,5′-tetramethylbenzidine chromogenic substrate for visual and colorimetric detection of iron(II) ion. Mikrochim Acta 2017. [DOI: 10.1007/s00604-017-2361-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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12
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Affiliation(s)
- Xiaosong Zhou
- Institute of Nuclear Physics and Chemistry, CAEP, Mianyang, CHINA, 621900
| | - Shuming Peng
- Institute of Nuclear Physics and Chemistry, CAEP, Mianyang, CHINA, 621900
| | - Xinggui Long
- Institute of Nuclear Physics and Chemistry, CAEP, Mianyang, CHINA, 621900
| | - Shunzhong Luo
- Institute of Nuclear Physics and Chemistry, CAEP, Mianyang, CHINA, 621900
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13
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Wang J, Zhuo L, Liao W, Yang X, Tang Z, Chen Y, Luo S, Zhou Z. Assessing the Biocidal Activity and Investigating the Mechanism of Oligo-p-phenylene-ethynylenes. ACS Appl Mater Interfaces 2017; 9:7964-7971. [PMID: 28221027 DOI: 10.1021/acsami.6b16243] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
A number of oligo-p-phenylene-ethynylenes (OPEs) have exhibited excellent biocidal activity against both Gram-negative and Gram-positive bacteria. Although cell death may occur in the dark, these biocidal compounds are far more effective in the light as a result of their abilities to generate cell-damaging reactive oxygen species. In this study, the interactions of four OPEs with Escherichia coli and Staphylococcus aureus have been investigated. Compared to the OPEs with quaternary ammonium salts (Q-OPE), the OPEs with tertiary ammonium (T-OPE) effectively kill many more bacterial cells under light irradiation, presumably by severe perturbations of the bacterial cell wall and cytoplasmic membrane. According to the findings from this study, such intriguing light-induced antibacterial behavior is probably attributed to the combination of bacterial membrane disruption and the interfacial or intracellular generation of singlet oxygen or other ROS. Singlet oxygen was proved to be formed from irradiation of the OPEs, whereas the varying cell membrane perturbation abilities of OPEs enhance antibacterial activity.
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Affiliation(s)
- Jing Wang
- Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics , 64 Mianshan Road, Mianyang, Sichuan 621900, People's Republic of China
| | - Liangang Zhuo
- Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics , 64 Mianshan Road, Mianyang, Sichuan 621900, People's Republic of China
| | - Wei Liao
- Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics , 64 Mianshan Road, Mianyang, Sichuan 621900, People's Republic of China
| | - Xia Yang
- Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics , 64 Mianshan Road, Mianyang, Sichuan 621900, People's Republic of China
| | - Zhenghua Tang
- New Energy Research Institute, School of Environment and Energy, South China University of Technology, Guangzhou Higher Education Mega Centre , Guangzhou 510006, People's Republic of China
- Provincial Key Laboratory of Atmospheric Environment and Pollution Control, Guangdong Provincial Engineering and Technology Research Center for Environmental Risk Prevention and Emergency Disposal, South China University of Technology, Guangzhou Higher Education Mega Centre , Guangzhou 510006, People's Republic of China
| | - Yue Chen
- Department of Nuclear Medicine, The Affiliated Hospital of Southwest Medical University , Luzhou, Sichuan 646000, People's Republic of China
| | - Shunzhong Luo
- Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics , 64 Mianshan Road, Mianyang, Sichuan 621900, People's Republic of China
| | - Zhijun Zhou
- Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics , 64 Mianshan Road, Mianyang, Sichuan 621900, People's Republic of China
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14
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Tang Y, Li S, Yang Y, Chen W, Wei H, Wang G, Yang J, Liao J, Luo S, Liu N. A simple and convenient method for production of 89Zr with high purity. Appl Radiat Isot 2016; 118:326-330. [PMID: 27744256 DOI: 10.1016/j.apradiso.2016.09.024] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2016] [Revised: 09/24/2016] [Accepted: 09/24/2016] [Indexed: 11/15/2022]
Abstract
A simple and convenient method for radiochemical separation 89Zr with no harmful substance was explored. The separated 89Zr was found to be [89Zr]Zr-chloride, and the recovery of the radioactivity was 85%±3% with high radionuclidic purity (99.99%). The yields of 89Zr via the reaction of (p, n) or (d, 2n) on Y target were also evaluated on CS-30 cyclotron, indicating the latter was more favorable for the production of 89Zr with a yield of 58±4 MBq/μA·h.
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Affiliation(s)
- Yu Tang
- Key Laboratory of Radiation Physics and Technology, Ministry of Education, Institute of Nuclear Science and Technology, Sichuan University, Chengdu 610064, P. R. China
| | - Shuntao Li
- Key Laboratory of Radiation Physics and Technology, Ministry of Education, Institute of Nuclear Science and Technology, Sichuan University, Chengdu 610064, P. R. China
| | - Yuanyou Yang
- Key Laboratory of Radiation Physics and Technology, Ministry of Education, Institute of Nuclear Science and Technology, Sichuan University, Chengdu 610064, P. R. China.
| | - Wen Chen
- Institute of Nuclear Physics and Chemistry, CAEP, Mianyang 621900, P. R. China
| | - Hongyuan Wei
- Institute of Nuclear Physics and Chemistry, CAEP, Mianyang 621900, P. R. China
| | - Guanquan Wang
- Institute of Nuclear Physics and Chemistry, CAEP, Mianyang 621900, P. R. China
| | - Jijun Yang
- Key Laboratory of Radiation Physics and Technology, Ministry of Education, Institute of Nuclear Science and Technology, Sichuan University, Chengdu 610064, P. R. China
| | - Jiali Liao
- Key Laboratory of Radiation Physics and Technology, Ministry of Education, Institute of Nuclear Science and Technology, Sichuan University, Chengdu 610064, P. R. China
| | - Shunzhong Luo
- Institute of Nuclear Physics and Chemistry, CAEP, Mianyang 621900, P. R. China
| | - Ning Liu
- Key Laboratory of Radiation Physics and Technology, Ministry of Education, Institute of Nuclear Science and Technology, Sichuan University, Chengdu 610064, P. R. China.
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15
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Liu B, Dong L, Yu Q, Li X, Wu F, Tan Z, Luo S. Thermodynamic Study on the Protonation Reactions of Glyphosate in Aqueous Solution: Potentiometry, Calorimetry and NMR spectroscopy. J Phys Chem B 2016; 120:2132-7. [PMID: 26862689 DOI: 10.1021/acs.jpcb.5b11550] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Glyphosate [N-(phosphonomethyl)glycine] has been described as the ideal herbicide because of its unique properties. There is some conflicting information concerning the structures and conformations involved in the protonation process of glyphosate. Protonation may influence the chemical and physical properties of glyphosate, modifying its structure and the chemical processes in which it is involved. To better understand the species in solution associated with changes in pH, thermodynamic study (potentiometry, calorimetry and NMR spectroscopy) about the protonation pathway of glyphosate is performed. Experimental results confirmed that the order of successive protonation sites of totally deprotonated glyphosate is phosphonate oxygen, amino nitrogen, and finally carboxylate oxygen. This trend is in agreement with the most recent theoretical work in the literature on the subject (J. Phys. Chem. A 2015, 119, 5241-5249). The result is important because it confirms that the protonated site of glyphosate in pH range 7-8, is not on the amino but on the phosphonate group instead. This corrected information can improve the understanding of the glyphosate chemical and biochemical action.
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Affiliation(s)
- Bijun Liu
- Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics , Mianyang, Sichuan 621999, China
| | - Lan Dong
- Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics , Mianyang, Sichuan 621999, China
| | - Qianhong Yu
- Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics , Mianyang, Sichuan 621999, China
| | - Xingliang Li
- Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics , Mianyang, Sichuan 621999, China
| | - Fengchang Wu
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences , Beijing 100012, China
| | - Zhaoyi Tan
- Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics , Mianyang, Sichuan 621999, China
| | - Shunzhong Luo
- Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics , Mianyang, Sichuan 621999, China
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16
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Ansari SA, Yang Y, Zhang Z, Gagnon KJ, Teat SJ, Luo S, Rao L. Complexation of Lanthanides with Glutaroimide-dioxime: Binding Strength and Coordination Modes. Inorg Chem 2016; 55:1315-23. [DOI: 10.1021/acs.inorgchem.5b02653] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Seraj A. Ansari
- Chemical
Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
- Radiochemistry
Division, Bhabha Atomic Research Centre, Mumbai 400 085, India
| | - Yanqiu Yang
- Chemical
Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
- Institute
of Nuclear Physics and Chemistry, CAEP, Mianyang, 621900, China
| | - Zhicheng Zhang
- Chemical
Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Kevin J. Gagnon
- Advanced
Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Simon J. Teat
- Advanced
Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Shunzhong Luo
- Institute
of Nuclear Physics and Chemistry, CAEP, Mianyang, 621900, China
| | - Linfeng Rao
- Chemical
Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
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17
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Yang Y, Teat SJ, Zhang Z, Luo S, Rao L. Complexation of U(VI) with benzoic acid at variable temperatures (298-353 K): thermodynamics and crystal structures of U(VI)/benzoate complexes. Dalton Trans 2016; 45:384-91. [PMID: 26609903 DOI: 10.1039/c5dt03532e] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Thermodynamics of the U(VI) complexation with benzoic acid (HL) was studied by spectrophotometry at varied temperatures (298-353 K) with constant ionic strength (1.05 mol kg(-1) NaClO4). Two U(VI) benzoate complexes, UO2L(+) and UO2(OH)L(aq), were identified and their formation constants determined. The formation of both complexes is endothermic and driven exclusively by entropy. Two types of U(VI)/benzoate complex crystals were synthesized from aqueous solutions at different pH and ligand/metal ratios. Their structures were determined by single-crystal X-ray diffractometry. One structure is a 1 : 3 U(VI) benzoate complex (Na[UO2(C7H5O2)3]·2H2O), each benzoate holding a bidentate coordination mode to U(VI) in the equatorial plane of UO2(2+). The other is a U(VI) hydroxobenzoate complex with unique μ3-OH bridging ([(UO2)2(C7H5O2)2(μ3-OH)2]·4H2O). In the structure, each UO2(2+) ion holds five coordination oxygens in its equatorial plane, two carboxylate oxygens from two benzoate ligands and three oxygens from three μ3-OH groups.
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Affiliation(s)
- Yanqiu Yang
- Institute of Nuclear Physics and Chemistry, Chinese Academy of Engineering Physics, Mianyang, Sichuan 621900, China and Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - Simon J Teat
- Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - Zhicheng Zhang
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - Shunzhong Luo
- Institute of Nuclear Physics and Chemistry, Chinese Academy of Engineering Physics, Mianyang, Sichuan 621900, China
| | - Linfeng Rao
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
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18
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Li X, Zhang Z, Martin LR, Luo S, Rao L. Complexation of NpO2+ with (2-hydroxyethyl)ethylenediaminetriacetic acid (HEDTA) in aqueous solutions: thermodynamic studies and structural analysis. RSC Adv 2016. [DOI: 10.1039/c6ra17818a] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The complexation of Np(v) with HEDTA in aqueous solutions was investigated by spectrophotometry, microcalorimetry and EXAFS. Thermodynamic parameters were determined and coordination modes also discussed.
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Affiliation(s)
- Xingliang Li
- Chemical Sciences Division
- Lawrence Berkeley National Laboratory
- Berkeley
- USA
- Institute of Nuclear Physics and Chemistry
| | - Zhicheng Zhang
- Chemical Sciences Division
- Lawrence Berkeley National Laboratory
- Berkeley
- USA
| | - Leigh R. Martin
- Aqueous Separations and Radiochemistry Department
- Idaho National Laboratory
- Idaho Falls
- USA
| | - Shunzhong Luo
- Institute of Nuclear Physics and Chemistry
- China Academy of Engineering Physics
- Mianyang
- China
| | - Linfeng Rao
- Chemical Sciences Division
- Lawrence Berkeley National Laboratory
- Berkeley
- USA
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19
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Yang Y, Fang Y, Liu J, Hu S, Hu S, Yang L, Wang D, Zhang H, Luo S. Complexation behavior of Eu(III), Tb(III), Tm(III), and Am(III) with three 1,10-phenanthroline-type ligands: insights from density functional theory. J Mol Model 2015; 21:185. [DOI: 10.1007/s00894-015-2721-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2014] [Accepted: 06/01/2015] [Indexed: 11/29/2022]
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20
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Yang Y, Hu S, Fang Y, Wei H, Hu S, Wang D, Yang L, Zhang H, Luo S. Density functional theory study of the Eu(III) and Am(III) complexes with two 1,10-phenanthroline-type ligands. Polyhedron 2015. [DOI: 10.1016/j.poly.2015.03.032] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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21
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Zhang G, Sun Z, Song H, Zhen M, Guan M, Chu T, Luo S, Wang C, Shu C. Radioactive lutetium metallofullerene 177LuxLu(3−x)N@C80–PCBPEG derivative: a potential tumor-targeted theranostic agent. J Mater Chem B 2015; 3:7011-7013. [DOI: 10.1039/c5tb00983a] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A radioactive metallofullerene 177LuxLu(3−x)N@C80 was firstly synthesized by means of neutron irradiation on Lu3N@C80.
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Affiliation(s)
- Guoqiang Zhang
- Beijing National Laboratory for Molecular Sciences
- Key Laboratory of Molecular Nanostructure and Nanotechnology
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
| | - Zhizhong Sun
- Institute of Nuclear Physics and Chemistry
- China Academy of Engineering Physics
- Mianyang 621900
- China
| | - Hongtao Song
- Institute of Nuclear Physics and Chemistry
- China Academy of Engineering Physics
- Mianyang 621900
- China
| | - Mingming Zhen
- Beijing National Laboratory for Molecular Sciences
- Key Laboratory of Molecular Nanostructure and Nanotechnology
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
| | - Mirong Guan
- Beijing National Laboratory for Molecular Sciences
- Key Laboratory of Molecular Nanostructure and Nanotechnology
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
| | - Taiwei Chu
- Beijing National Laboratory for Molecular Sciences
- Department of Applied Chemistry
- College of Chemistry and Molecular Engineering
- Peking University
- Beijing 100871
| | - Shunzhong Luo
- Institute of Nuclear Physics and Chemistry
- China Academy of Engineering Physics
- Mianyang 621900
- China
| | - Chunru Wang
- Beijing National Laboratory for Molecular Sciences
- Key Laboratory of Molecular Nanostructure and Nanotechnology
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
| | - Chunying Shu
- Beijing National Laboratory for Molecular Sciences
- Key Laboratory of Molecular Nanostructure and Nanotechnology
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
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22
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Yang Y, Luo S, Dong F, Chen Q, Yang M. Response of strontium titanate to electron irradiation for the immobilization of strontium. J Radioanal Nucl Chem 2015. [DOI: 10.1007/s10967-014-3356-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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23
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Yang Y, Liu J, Yang L, Li K, Zhang H, Luo S, Rao L. Probing the difference in covalence by enthalpy measurements: a new heterocyclic N-donor ligand for actinide/lanthanide separation. Dalton Trans 2015; 44:8959-70. [DOI: 10.1039/c5dt00679a] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
BQPhen, a new tetra-dentate nitrogen-donor ligand, forms stronger complexes with Am3+ than Eu3+ or Nd3+, due to a more exothermic enthalpy of complexation for the Am3+ complexes, implying a higher degree of covalence in the BQPhen complexes with Am3+ than Eu3+ or Nd3+.
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Affiliation(s)
- Yanqiu Yang
- Institute of Nuclear Physics and Chemistry
- Mianyang
- China
- Chemical Sciences Division
- Lawrence Berkeley National Laboratory
| | - Jun Liu
- Institute of Nuclear Physics and Chemistry
- Mianyang
- China
| | - Liang Yang
- Institute of Nuclear Physics and Chemistry
- Mianyang
- China
| | - Kun Li
- College of Chemistry
- Sichuan University
- Chengdu
- China
| | - Huabei Zhang
- College of Chemistry
- Beijing Normal University
- Beijing 100875
- China
| | - Shunzhong Luo
- Institute of Nuclear Physics and Chemistry
- Mianyang
- China
| | - Linfeng Rao
- Chemical Sciences Division
- Lawrence Berkeley National Laboratory
- Berkeley
- USA
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24
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Liu B, Mu W, Xie X, Li X, Wei H, Tan Z, Jian Y, Luo S. Enhancing the adsorption capacity of Sr2+ and Cs+ onto hexagonal tungsten oxide by doped niobium. RSC Adv 2015. [DOI: 10.1039/c4ra13161d] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The adsorption capacity of Sr2+ and Cs+ onto hexagonal tungsten oxide was enhanced by the incorporation of Nb.
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Affiliation(s)
- Bijun Liu
- Institute of Nuclear Chemistry and Physics
- China Academy of Engineering Physics
- Mianyang
- China
| | - Wanjun Mu
- Institute of Nuclear Chemistry and Physics
- China Academy of Engineering Physics
- Mianyang
- China
| | - Xiang Xie
- Institute of Nuclear Chemistry and Physics
- China Academy of Engineering Physics
- Mianyang
- China
| | - Xingliang Li
- Institute of Nuclear Chemistry and Physics
- China Academy of Engineering Physics
- Mianyang
- China
| | - Hongyuan Wei
- Institute of Nuclear Chemistry and Physics
- China Academy of Engineering Physics
- Mianyang
- China
| | - Zhaoyi Tan
- Institute of Nuclear Chemistry and Physics
- China Academy of Engineering Physics
- Mianyang
- China
| | - Yuan Jian
- Institute of Nuclear Chemistry and Physics
- China Academy of Engineering Physics
- Mianyang
- China
| | - Shunzhong Luo
- Institute of Nuclear Chemistry and Physics
- China Academy of Engineering Physics
- Mianyang
- China
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25
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Zhang Z, Yang Y, Liu G, Luo S, Rao L. Effect of temperature on the thermodynamic and spectroscopic properties of Np(v) complexes with picolinate. RSC Adv 2015. [DOI: 10.1039/c5ra12424g] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The effect of temperature on the thermodynamic and spectroscopic properties of Np(v) complexes with picolinate was investigated.
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Affiliation(s)
- Zhicheng Zhang
- Chemical Sciences Division
- Lawrence Berkeley National Laboratory
- Berkeley
- USA
| | - Yanqiu Yang
- Chemical Sciences Division
- Lawrence Berkeley National Laboratory
- Berkeley
- USA
- Institute of Nuclear Physics and Chemistry
| | - Guokui Liu
- Chemical Sciences and Engineering Division
- Argonne National Laboratory
- Argonne
- USA
| | - Shunzhong Luo
- Institute of Nuclear Physics and Chemistry
- Chinese Academy of Engineering Physics
- Mianyang
- China
| | - Linfeng Rao
- Chemical Sciences Division
- Lawrence Berkeley National Laboratory
- Berkeley
- USA
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26
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Sun Z, Wang J, Wei H, Wang G, Jian Y, Luo S, Zhou Z. Spectroscopic Investigation of a Synthetic Cyanine Amine Derivative upon Various Scaffolds. ANAL LETT 2014. [DOI: 10.1080/00032719.2014.919505] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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27
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Yang Y, Zhang Z, Luo S, Rao L. Complexation of NpVIons with 1,10-Phenanthroline-2,9-dicarboxylic Acid: Spectrophotometric and Microcalorimetric Studies. Eur J Inorg Chem 2014. [DOI: 10.1002/ejic.201402520] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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28
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Li X, Ding C, Liao J, Lan T, Li F, Zhang D, Yang J, Yang Y, Luo S, Tang J, Liu N. Biosorption of uranium on Bacillus sp. dwc-2: preliminary investigation on mechanism. J Environ Radioact 2014; 135:6-12. [PMID: 24727549 DOI: 10.1016/j.jenvrad.2014.03.017] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/25/2013] [Revised: 03/04/2014] [Accepted: 03/23/2014] [Indexed: 06/03/2023]
Abstract
In this paper, the biosorption mechanisms of uranium on an aerobic Bacillus sp. dwc-2, isolated from a potential disposal site for (ultra-) low uraniferous radioactive waste in Southwest China, was explored by transmission electron microscopy (TEM), energy dispersive X-ray (EDX) analysis, FT-IR spectroscopy, proton induced X-ray emission (PIXE) and enhanced proton backscattering spectrometry (EPBS). The biosorption experiments for uranium were carried out at a low pH (pH 3.0), where the uranium solution speciation is dominated by highly mobile uranyl ions. The bioaccumulation was found to be the potential mechanism involved in uranium biosorption by Bacillus sp. dwc-2, and the bioaccumulated uranium was deposited in the cell interior as needle shaped particles at pH 3.0, as revealed by TEM analysis as well as EDX spectra. FTIR analysis further suggested that the absorbed uranium was bound to amino, phosphate and carboxyl groups of bacterial cells. Additionally, PIXE and EPBS results confirmed that ion-exchange also contributed to the adsorption process of uranium. All the results implied that the biosorption mechanism of uranium on Bacillus sp. is complicated and at least involves bioaccumulation, ion exchange and complexation process.
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Affiliation(s)
- Xiaolong Li
- Key Laboratory of Radiation Physics and Technology, Ministry of Education, Institute of Nuclear Science and Technology, Sichuan University, Chengdu 610064, PR China
| | - Congcong Ding
- Key Laboratory of Radiation Physics and Technology, Ministry of Education, Institute of Nuclear Science and Technology, Sichuan University, Chengdu 610064, PR China; Key Laboratory of Biological Resource and Ecological Environment of the Ministry of Education, College of Life Sciences, Sichuan University, Chengdu 610064, PR China
| | - Jiali Liao
- Key Laboratory of Radiation Physics and Technology, Ministry of Education, Institute of Nuclear Science and Technology, Sichuan University, Chengdu 610064, PR China.
| | - Tu Lan
- Key Laboratory of Radiation Physics and Technology, Ministry of Education, Institute of Nuclear Science and Technology, Sichuan University, Chengdu 610064, PR China
| | - Feize Li
- Key Laboratory of Radiation Physics and Technology, Ministry of Education, Institute of Nuclear Science and Technology, Sichuan University, Chengdu 610064, PR China
| | - Dong Zhang
- Institute of Nuclear Physics and Chemistry, CAEP, Mianyang 621900, PR China
| | - Jijun Yang
- Key Laboratory of Radiation Physics and Technology, Ministry of Education, Institute of Nuclear Science and Technology, Sichuan University, Chengdu 610064, PR China
| | - Yuanyou Yang
- Key Laboratory of Radiation Physics and Technology, Ministry of Education, Institute of Nuclear Science and Technology, Sichuan University, Chengdu 610064, PR China
| | - Shunzhong Luo
- Institute of Nuclear Physics and Chemistry, CAEP, Mianyang 621900, PR China
| | - Jun Tang
- Key Laboratory of Radiation Physics and Technology, Ministry of Education, Institute of Nuclear Science and Technology, Sichuan University, Chengdu 610064, PR China
| | - Ning Liu
- Key Laboratory of Radiation Physics and Technology, Ministry of Education, Institute of Nuclear Science and Technology, Sichuan University, Chengdu 610064, PR China.
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29
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Xie X, Mu W, Li X, Wei H, Jian Y, Yu Q, Zhang R, Lv K, Tang H, Luo S. Incorporation of tantalum ions enhances the electrocatalytic activity of hexagonal WO3 nanowires for hydrogen evolution reaction. Electrochim Acta 2014. [DOI: 10.1016/j.electacta.2014.04.122] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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30
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He J, Yan L, Liu G, Ma Z, Luo S, He S, Guo Q, Lan J, Wu D. Synthesis of Water-Soluble Cyclen-Functionalised Fullerene C 60 Derivatives. Journal of Chemical Research 2014. [DOI: 10.3184/174751914x13945582435462] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The fullerene family has interesting photophysical, electrochemical and mechanical properties with applications in organic solar cells, nanotechnology, superconductivity, chemosensors and biomedicine. Water-soluble cyclen-functionalised fullerene derivatives cyclen-C60-1 and bis(cyclen)-C60-2 have been synthesised. The whole synthetic routes are simple and the total yields are relatively high.
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Affiliation(s)
- Jiaheng He
- Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang 621900, P.R. China
| | - Lipeng Yan
- Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu 610064, P.R. China
| | - Guoping Liu
- Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang 621900, P.R. China
| | - Zongping Ma
- Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang 621900, P.R. China
| | - Shunzhong Luo
- Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang 621900, P.R. China
| | - Songhua He
- Institute of Media and Communic ation, Shenzhen Polytechnic, Shenzhen 518055, P.R. China
| | - Qiang Guo
- Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu 610064, P.R. China
| | - Jingbo Lan
- Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu 610064, P.R. China
| | - Di Wu
- Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu 610064, P.R. China
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31
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Ding C, Feng S, Cheng W, Zhang J, Li X, Liao J, Yang Y, An Z, Luo S, Yang J, Tang J, Liu N. Biosorption behavior and mechanism of thorium on Streptomyces sporoverrucosus dwc-3. J Radioanal Nucl Chem 2014. [DOI: 10.1007/s10967-014-3110-5] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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32
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Li X, Mu W, Xie X, Liu B, Tang H, Zhou G, Wei H, Jian Y, Luo S. Strontium adsorption on tantalum-doped hexagonal tungsten oxide. J Hazard Mater 2014; 264:386-394. [PMID: 24316810 DOI: 10.1016/j.jhazmat.2013.11.032] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/23/2013] [Revised: 10/14/2013] [Accepted: 11/14/2013] [Indexed: 06/02/2023]
Abstract
Hexagonal tungsten oxide (hex-WO3) has the potential to separate (137)Cs and (90)Sr from nuclear power plant or fission (99)Mo production waste. This study aims to increase the capacity of hex-WO3 to adsorb Sr(2+). Ta-doped hex-WO3 was synthesized by the hydrothermal treatment of sodium tungstate dihydrate and tantalum chloride in concentrated HCl, in the presence of ammonium sulfate. Incorporating Ta into the WO3 framework caused the interlayer spacing to expand, and the band gap to shift to higher energy. The Sr(2+) adsorption capacity of Ta-doped hex-WO3 was significantly higher than that of hex-WO3. Sr(2+) adsorption reached equilibrium within 2h in acidic solution. Maximum Sr(2+) removal occurred at pH 4. Sr(2+) uptake by hex-WO3 was described better by the Freundlich model than by the Langmuir model. Sr(2+) adsorption on hex-WO3 was spontaneous under the studied conditions.
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Affiliation(s)
- Xingliang Li
- Institute of Nuclear Chemistry and Physics, China Academy of Engineering Physics, Mianyang 621900, PR China; Institute of Nuclear Science and Technology, Sichuan University, Chengdu 610064, PR China.
| | - Wanjun Mu
- Institute of Nuclear Chemistry and Physics, China Academy of Engineering Physics, Mianyang 621900, PR China
| | - Xiang Xie
- Institute of Nuclear Chemistry and Physics, China Academy of Engineering Physics, Mianyang 621900, PR China
| | - Bijun Liu
- Institute of Nuclear Chemistry and Physics, China Academy of Engineering Physics, Mianyang 621900, PR China
| | - Hui Tang
- Institute of Nuclear Chemistry and Physics, China Academy of Engineering Physics, Mianyang 621900, PR China
| | - Guanhong Zhou
- Institute of Nuclear Chemistry and Physics, China Academy of Engineering Physics, Mianyang 621900, PR China
| | - Hongyuan Wei
- Institute of Nuclear Chemistry and Physics, China Academy of Engineering Physics, Mianyang 621900, PR China
| | - Yuan Jian
- Institute of Nuclear Chemistry and Physics, China Academy of Engineering Physics, Mianyang 621900, PR China; Institute of Nuclear Science and Technology, Sichuan University, Chengdu 610064, PR China
| | - Shunzhong Luo
- Institute of Nuclear Chemistry and Physics, China Academy of Engineering Physics, Mianyang 621900, PR China.
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33
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Chu H, He L, Jiang Q, Fang Y, Jia Y, Yuan X, Zou S, Li X, Feng W, Yang Y, Liu N, Luo S, Yang Y, Yang L, Yuan L. CMPO-calix[4]arenes with spacer containing intramolecular hydrogen bonding: effect of local rigidification on solvent extraction toward f-block elements. J Hazard Mater 2014; 264:211-218. [PMID: 24295773 DOI: 10.1016/j.jhazmat.2013.11.021] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2013] [Revised: 10/15/2013] [Accepted: 11/10/2013] [Indexed: 06/02/2023]
Abstract
To understand intramolecular hydrogen bonding in effecting liquid-liquid extraction behavior of CMPO-calixarenes, three CMPO-modified calix[4]arenes (CMPO-CA) 5a-5c with hydrogen-bonded spacer were designed and synthesized. The impact of spacer rotation that is hindered by introduction of intramolecular hydrogen bonding upon extraction of La(3+), Eu(3+), Yb(3+), Th(4+), and UO2(2+) has been examined. The results show that 5b and 5c containing only one hydrogen bond with a less hindered rotation spacer extract La(3+) more efficiently than 5a containing two hydrogen bonds with a more hindered rotation spacer, demonstrating the importance of local rigidification of spacer in the design of extractants in influencing the coordination environment. The large difference in extractability between La(3+) and Yb(3+) (or Eu(3+)) by 5b (or 5c), and the small difference by 5a, suggests intramolecular hydrogen bonding do exert pronounced influence upon selective extraction of light and heavy lanthanides. Log-log plot analysis indicates a 1:1, 2:1 and 1:1 stoichiometry (ligand/metal) for the extracted complex formed between 5b and La(3+), Th(4+), UO2(2+), respectively. Additionally, their corresponding acyclic analogs 7a-7c exhibit negligible extraction toward these metal ions. These results reveal the possibility of selective extraction via tuning local chelating surroundings of CMPO-CA by aid of intramolecular hydrogen bonding.
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Affiliation(s)
- Hongzhu Chu
- Key Laboratory for Radiation Physics and Technology of Ministry of Education, Institute of Nuclear Science and Technology, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Lutao He
- Key Laboratory for Radiation Physics and Technology of Ministry of Education, Institute of Nuclear Science and Technology, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Qian Jiang
- Key Laboratory for Radiation Physics and Technology of Ministry of Education, Institute of Nuclear Science and Technology, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Yuyu Fang
- Key Laboratory for Radiation Physics and Technology of Ministry of Education, Institute of Nuclear Science and Technology, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Yiming Jia
- Key Laboratory for Radiation Physics and Technology of Ministry of Education, Institute of Nuclear Science and Technology, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Xiangyang Yuan
- Key Laboratory for Radiation Physics and Technology of Ministry of Education, Institute of Nuclear Science and Technology, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Shuliang Zou
- Key Laboratory for Radiation Physics and Technology of Ministry of Education, Institute of Nuclear Science and Technology, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Xianghui Li
- Key Laboratory for Radiation Physics and Technology of Ministry of Education, Institute of Nuclear Science and Technology, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Wen Feng
- Key Laboratory for Radiation Physics and Technology of Ministry of Education, Institute of Nuclear Science and Technology, College of Chemistry, Sichuan University, Chengdu 610064, China.
| | - Yuanyou Yang
- Key Laboratory for Radiation Physics and Technology of Ministry of Education, Institute of Nuclear Science and Technology, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Ning Liu
- Key Laboratory for Radiation Physics and Technology of Ministry of Education, Institute of Nuclear Science and Technology, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Shunzhong Luo
- Institute of Nuclear Physics and Chemistry, CAEP, Mianyang 621900, China
| | - Yanqiu Yang
- Institute of Nuclear Physics and Chemistry, CAEP, Mianyang 621900, China
| | - Liang Yang
- Institute of Nuclear Physics and Chemistry, CAEP, Mianyang 621900, China
| | - Lihua Yuan
- Key Laboratory for Radiation Physics and Technology of Ministry of Education, Institute of Nuclear Science and Technology, College of Chemistry, Sichuan University, Chengdu 610064, China.
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Gao R, Hu J, Zhang K, He Y, Liu P, Luo S, Yang Y, Yang L, Feng W, Yuan L. Highly Selective Fluorescent Recognition towards Th4+Based on Coumarin-derivatized Crescent Aromatic Oligoamide. CHINESE J CHEM 2013. [DOI: 10.1002/cjoc.201300359] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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35
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Abstract
A range of 2- or 3-substituted imidazo[1,2- a]pyridines were prepared from 2-aminopyridine derivatives and gem-dibromovinyl compounds by the tandem nucleophilic substitution (or nucleophilic addition)/cyclisation reaction.
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Affiliation(s)
- Guoping Liu
- Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang 621900, P. R. China
| | - Xuefeng Cong
- Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu 610064, P. R. China
| | - Jiaheng He
- Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang 621900, P. R. China
| | - Shunzhong Luo
- Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang 621900, P. R. China
| | - Di Wu
- Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu 610064, P. R. China
| | - Jingbo Lan
- Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu 610064, P. R. China
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Li H, Liu Y, Hu R, Yang Y, Wang G, Zhong Z, Luo S. Simulations about self-absorption of tritium in titanium tritide and the energy deposition in a silicon Schottky barrier diode. Appl Radiat Isot 2012; 70:2559-63. [DOI: 10.1016/j.apradiso.2012.07.012] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2012] [Revised: 07/12/2012] [Accepted: 07/12/2012] [Indexed: 10/28/2022]
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Li X, Liu B, Jian Y, Zhong W, Mu W, He J, Ma Z, Liu G, Luo S. Ion-Exchange Characteristics of a Layered Metal Sulfide for Removal of Sr2+from Aqueous Solutions. SEP SCI TECHNOL 2012. [DOI: 10.1080/01496395.2011.629397] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Liu Y, Hu R, Yang Y, Wang G, Luo S, Liu N. Investigation on a radiation tolerant betavoltaic battery based on Schottky barrier diode. Appl Radiat Isot 2012; 70:438-41. [DOI: 10.1016/j.apradiso.2011.10.013] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2011] [Revised: 10/09/2011] [Accepted: 10/24/2011] [Indexed: 10/15/2022]
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Hu S, Deng H, Jiang S, Luo S, Lei Y. [A new radiopharmaceutical for bone imaging: experimental study of 99mTc-HEDTMP]. Sheng Wu Yi Xue Gong Cheng Xue Za Zhi 2010; 27:811-815. [PMID: 20842850] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
The purpose of this study is to prepare 99mTc-HEDTMP [N-(2-hydroxyethyl) ethlenediamine-1,1,2-tri (methylene phosphonic acid), a new kind of bone seeking compound; to investigate its biological properties; and to explore the possibility of using it as a potential radiopharmaceutical for skeleton scintigraphy. HEDTMP was labeled with 99mTc by "pretinning" method, the radiochemical purity was 97.00% +/- 0.34%. 99mTc-HEDTMP was found to be stable in 5 hours in vitro with the radiochemical purity over 95% even after being diluted by physiological saline with the factor of dilution 100. The plane bone scanning of rabbits showed that 99mTc-HEDTMP was principally absorbed by skeletal system. Skull, spine and legs could be observed clearly, and were more legible than the images of 99mTc-MDP. Mice trial also indicated the high bone seeking of 99mTc-HEDTMP. The skeletal uptake was 11.92% ID/g, 13.19% ID/g, 10.14% ID/g, 10.04% ID/g, 7.71% ID/g separately at 30 minutes, 1 hour, 3 hours, 6 hours and 24 hours after the injection. Kidney seemed to be the major excretory organ. The clearance of blood was quick and the retaining amount in non-target organs was small. These results indicate that 99mTc-HEDTMP can be prepared easily, and its biological properties can be compared favorably with the commonly used bone imaging agent, and it is well worth further researching as a promising potential radiopharmaceutical in nuclide diagnosis for skeleton diseases.
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Affiliation(s)
- Shu Hu
- Department of Nuclear Medicine, Shenzhen Hospital, Peking University, Shenzhen 518036, China
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Wang G, Hu R, Wei H, Zhang H, Yang Y, Xiong X, Liu G, Luo S. The effect of temperature changes on electrical performance of the betavoltaic cell. Appl Radiat Isot 2010; 68:2214-7. [PMID: 20576441 DOI: 10.1016/j.apradiso.2010.06.011] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2009] [Revised: 05/23/2010] [Accepted: 06/07/2010] [Indexed: 10/19/2022]
Abstract
There is a significant relationship between temperature and electrical performance of a betavoltaic cell. Two silicon diodes used as energy conversion devices of betavoltaic cells were irradiated by Ni-63, and the relationships between the temperature and the electrical performance such as V(oc), I(sc), and P(max) were examined. I(sc) increased very little as temperature increased but V(oc) decreased considerably. The changing values of V(oc) were -3.1 and -3.0 mV/K, respectively, in the temperature range 233.15-333.15 K. As a result of this, P(max) and eta also decreased markedly.
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Affiliation(s)
- Guanquan Wang
- Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang, Sichuan 621900, China.
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Abstract
Summary
As an important radioisotope in nuclear industry and other fields, americium-241 is one of the most serious contamination concerns duo to its high toxicity and long half-life. In this experiment, the biosorption of 241Am from solution by Candida sp., and the effects of various experimental conditions on the adsorption were investigated. The preliminary results showed that the adsorption of 241Am by Candida sp. was efficient. 241Am could be removed by Candida sp. of 0.82g/L (dry weight) from 241Am solutions of 5.6-111MBq/L (44.3-877.2μg/L)(C
0), with maximum adsorption rate (R) of 98 and maximum adsorption capacities (W) of 63.5MBq/g biomass (dry weight) (501.8μg/g). The biosorption equilibrium was achieved within 4 hour and the optimum pH was pH=2. No significant differences on 241Am adsorption were observed at 10°C–45°C, or in solutions containing Au3+ or Ag+, even 1500 times or 4500 times above the 241Am concentration, respectively. The relationship between concentrations and adsorption capacities of 241Am indicated the biosorption process should be described by a Langmuir adsorption isotherm.
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Liao J, Liu N, Yang Y, Luo S, Luo Q, An Z, Duan Y, Liu M, Zhao P. Preliminary investigation on biosorption mechanism of 241Am by Rhizopus arrhizus. J Radioanal Nucl Chem 2008. [DOI: 10.1007/s10967-007-7077-3] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Jia ZY, Deng HF, Pu MF, Luo SZ. Rhenium-188 labelled meso-tetrakis[3,4-bis(carboxymethyleneoxy)phenyl] porphyrin for targeted radiotherapy: preliminary biological evaluation in mice. Eur J Nucl Med Mol Imaging 2008; 35:734-42. [PMID: 18193220 DOI: 10.1007/s00259-007-0682-0] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2007] [Accepted: 12/03/2007] [Indexed: 02/05/2023]
Abstract
PURPOSE This study focusses on a promising carrier system for therapeutic and imaging purposes using meso-tetrakis[3,4-bis(carboxymethyleneoxy)phenyl] porphyrin (T(3,4)CPP). To assess its potential for clinical use, we labelled T(3,4)CPP with (188)Re and analysed some kinetic biodistribution parameters after intravenous injection in mice. MATERIALS AND METHODS T(3,4)CPP was synthesized and labelled with (188)Re. Normal Kunming (KM) mice and melanoma- or hepatoma-bearing BALB/c nude mice were injected intravenously with 5.55 MBq (188)Re-labelled T(3,4)CPP and sacrificed at 0.5, 2, 4, and 24 h and 8, and 24 h, respectively. RESULTS The (188)Re-T(3,4)CPP yield was more than 95% with specific activity 16.9 GBq (mol)(-1), and Vitamin C (VC) could increase its stability in vitro. In normal KM mice, (188)Re-T(3,4)CPP had fast blood clearance (approximately 99%, 24 h postinjection), low retention in the vital organs and hepatotropic characteristics. In nude mice, more than 4.4 and 6.1% uptake per gram of tumour (%ID g(-1)) at 8 h postinjection was in melanoma and hepatoma, respectively; this remained as high levels after 24 h as 4.6 and 6.5%, respectively. At 8 h, the tumour/blood and tumour/muscle (T/M) ratios in melanomas and hepatoma bearing mice were 7.3, 13,and 7.0, 20, respectively. Twenty-four hours later, these high ratios still continued in existence which were 9.6, 19 and 10, 25, respectively. CONCLUSION The results obtained in this study indicate that (188)Re-T(3,4)CPP has better tumour affinity and retainable accumulation characteristics in carcinoma which can potentially be used for tumour-targeted radiotherapy.
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Affiliation(s)
- Zhi-yun Jia
- Department of Nuclear Medicine, West China Hospital, Sichuan University, Wuhou District, Chengdu, Sichuan Province 610041, China.
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Wen GH, Deng HF, Bing WZ, Luo SZ. [Preliminarily experimental study on biological properties of 153Sm-citrate-nano-Hydroxyapatite]. Sichuan Da Xue Xue Bao Yi Xue Ban 2007; 38:1017-1020. [PMID: 18095611] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
OBJECTIVE To investigate the biological character of new agent 153Sm-citrate-nano-Hydroxyapatite (nano-HA) in vitro and in vivo, and to explore a new radiopharmaceutical for the target therapy of bone metastasis cancer. METHODS The nano-HA was synthesized by collosol-gelatum method, and evaluated by transmission electron microscopy (TEM) and X-ray diffraction (XRD). 153Sm was produced at a high specific activity and excellent radionuclidic purity, with which nano-HA was labeled by citrate transfer ligands in the best environment. By adopting the independent variable method, we also studied the optimally labeled condition and stability of 153Sm-citrate-nano-HA in vitro. And 153Sm-citrate-nano-HA was injected into normal rabbits for radio scanning performed. The cancer cell SMMC-7721 and MCF-7 cell lines were divided into two groups, and treated with nano-HA, 153Sm-citrate and 153Sm-citrate-nano-HA in vitro respectively, of which the cell survival rate was measured by MTT methods. RESULTS Through the detections of TEM, XRD showed that nano-HA consisted of needle-like microcrystals. The label rate of 153Sm-citrate-nano-HA was more than 95%, and extremely stable in vitro. The radio scanning of normal rabbits showed the skeletal system to be clear, and other systems, for example liver, spleen and kidney, could also be seen. The cell culture experiments in vitro indicated that 153Sm-citrate-nano-HA strongly inhibited the proliferation of SMMC-7721 and MCF-7 cells. 153Sm-citrate-nano-HA's half effective inhibition concentrations were 1.89 mg/L and 0.094 mg/L respectively; nano-HA's half effective inhibition concentrations were 3. 31 mg/L and 0.52 mg/L respectively; 153Sm-citrate's half effective inhibition concentrations were 4. 32 mg/L and 0. 67 mg/L respectively. CONCLUSIONS Sm-citrate-nano-HA shows fine biological properties, and is well worth for further researched and prepared as a promising potential radiopharmaceutical in nuclidic treatment for cancer bone metastases.
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Affiliation(s)
- Guang-hua Wen
- Department of Nuclear Medicine, West China Hospital, Sichuan University, Chengdu 610041, China
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Liu N, Liao J, Yang Y, Luo S, Luo Q, An Z, Duan Y, Liu M, Zhao P. Biosorption of 241Am by Saccharomyces cerevisiae: Preliminary investigation on mechanism. J Radioanal Nucl Chem 2007. [DOI: 10.1007/s10967-007-6996-3] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Yang Y, Luo S, Pu M, Wang W, Wang G, He J, Liu G, Bing W, Wei H. Labeling conditions, in vitro properties and biodistributions of various Sn-labeled complexes. Appl Radiat Isot 2005; 62:597-603. [PMID: 15701415 DOI: 10.1016/j.apradiso.2004.09.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2004] [Revised: 08/20/2004] [Accepted: 09/19/2004] [Indexed: 10/26/2022]
Abstract
Conditions for preparing Sn-EDTMP, Sn-DTPMP, Sn-TTHMP, Sn-HEDTMP and Sn-DTPA in aqueous solution in open air environments, and their in vitro properties including adsorption on hydroxyapatite (HA) and collagen (I) and binding to bovine serum albumin (BSA) were studied using (117m)Sn and 113Sn as tracers. Biodistributions of SnO2.xH2O.yEDTMP, SnO2.xH2O.yDTPMP, SnO2.xH2O.yTTHMP, SnO2.xH2O.yHEDTMP, SnO2.xH2O.yDTPA in normal mice were also tested. Based on the above experiments, the relationship between in vitro biochemical properties and biodistributions of these SnO2.xH2O.yLigands was investigated. The results show that Sn(IV)-Ligands are prone to hydrolysis into SnO2.xH2O.yLigands in aqueous solutions in open air environments, especially when the ligand is DTPA, when the molar ratio of metal to ligand is higher than 1:200, or when the pH of the solution is higher than 10. The in vitro experiments show that all of the SnO2.xH2O.yLigands bind strongly to BSA, and the binding percentages of SnO2.xH2O.yLigands to BSA are much higher than those of the corresponding Sn(IV)-Ligands. The biodistribution data indicate that all of the SnO2.xH2O.yLigands locate mainly in bone with little uptake in liver. When the binding percentages of SnO2.xH2O.yLigands to BSA are similar, those SnO2.xH2O.yLigands with higher adsorption on HA and collagen (I) undergo lower liver uptake.
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Affiliation(s)
- Yuqing Yang
- Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, P.O. Box 919-230, Mianyang, Sichuan 621900, China.
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Abstract
Rhizopus arrihizus (R. arrihizus), a fungus, which in previous experiments had shown encouraging ability to remove 241Am from solutions, was immobilized by calcium alginate and other reagents. The various factors affecting 241Am biosorption by the immobilized R. arrihizus were investigated. The results showed that not only can immobilized R. arrihizus adsorb 241Am as efficiently as free R. arrihizus, but that also can be used repeatedly or continuously. The biosorption equilibrium was achieved within 2 h, and more than 94% of 241Am was removed from 241Am solutions of 1.08 MBq/l by immobilized R. arrihizu in the pH range 1-7. Temperature did not affect the adsorption on immobilized R. arrihizus in the range 15-45 degrees C. After repeated adsorption for 8 times, the immobilized R. arrihizus still adsorbed more than 97% of 241Am. At this time, the total adsorption of 241Am was more than 88.6 KBq/g, and had not yet reached saturation. Ninety-five percent of the adsorbed 241Am was desorbed by saturated EDTA solution and 98% by 2 mol/l HNO(3).
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Affiliation(s)
- Jiali Liao
- Key Laboratory of Radiation Physics and Technology of Education Ministry of China, Institute of Nuclear Science and Technology, Sichuan University, Chengdu 610064, People's Republic of China.
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