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Li Z, Tang X, Mou Z, Wang X, Lv S, Fan X, Dong T, Li Z. Surfactants Accelerate Isotope Exchange-Based 18F-Fluorination in Water. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023. [PMID: 37329319 DOI: 10.1021/acs.langmuir.3c00522] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/19/2023]
Abstract
Radiochemical yields (RCYs) of isotope exchange-based 18F-fluorination of non-carbon-centered substrates in water are rationally enhanced by adding surfactants, which increases both the rate constant k and local reactant concentrations. Among 12 surfactants, the cationic surfactant cetrimonium bromide (CTAB) and two nonionic surfactants (Tween 20 and Tween 80) were selected for their superior catalytic effects, namely, electrostatic effects or solubilization effects. For a model substrate, bis(4-methoxyphenyl)phosphinic fluoride, the 18F-fluorination rate constant (k) increased up to 7-fold, while its saturation concentration rose up to 15-fold due to micelle formation, encapsulating 70-94% of the substrate. With 30.0 mmol/L CTAB, the required 18F-labeling temperature of a typical organofluorosilicon prosthesis ([18F]SiFA) decreased from 95 °C to room temperature, achieving an RCY of 22%. For an E[c(RGDyK)]2-derived peptide tracer with an organofluorophosphine prosthesis, the RCY in water at 90 °C achieved 25%, correspondingly increasing the molar activity (Am). After high-performance liquid chromatography (HPLC) or solid-phase purification, the residual selected surfactant concentrations in the tracer injections were well below the FDA DII (Inactive Ingredient Database) limits or the LD50 in mice.
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Affiliation(s)
- Zhongjing Li
- State Key Laboratory of Vaccines for Infectious Diseases, Center for Molecular Imaging and Translational Medicine, Xiang An Biomedicine Laboratory, School of Public Health, Xiamen University, Xiamen, Fujian 361102, China
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, National Innovation Platform for Industry-Education Intergration in Vaccine Research, Xiamen University, Xiamen, Fujian 361102, China
- Department of Nuclear Medicine, National Cancer Center, National Clinical Research Center for Cancer, Cancer Hospital & Shenzhen Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Shenzhen 518116, China
| | - Xiaoqun Tang
- State Key Laboratory of Vaccines for Infectious Diseases, Center for Molecular Imaging and Translational Medicine, Xiang An Biomedicine Laboratory, School of Public Health, Xiamen University, Xiamen, Fujian 361102, China
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, National Innovation Platform for Industry-Education Intergration in Vaccine Research, Xiamen University, Xiamen, Fujian 361102, China
| | - Zhaobiao Mou
- State Key Laboratory of Vaccines for Infectious Diseases, Center for Molecular Imaging and Translational Medicine, Xiang An Biomedicine Laboratory, School of Public Health, Xiamen University, Xiamen, Fujian 361102, China
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, National Innovation Platform for Industry-Education Intergration in Vaccine Research, Xiamen University, Xiamen, Fujian 361102, China
| | - Xiaoxiao Wang
- State Key Laboratory of Vaccines for Infectious Diseases, Center for Molecular Imaging and Translational Medicine, Xiang An Biomedicine Laboratory, School of Public Health, Xiamen University, Xiamen, Fujian 361102, China
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, National Innovation Platform for Industry-Education Intergration in Vaccine Research, Xiamen University, Xiamen, Fujian 361102, China
| | - Shengji Lv
- State Key Laboratory of Vaccines for Infectious Diseases, Center for Molecular Imaging and Translational Medicine, Xiang An Biomedicine Laboratory, School of Public Health, Xiamen University, Xiamen, Fujian 361102, China
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, National Innovation Platform for Industry-Education Intergration in Vaccine Research, Xiamen University, Xiamen, Fujian 361102, China
| | - Xiaowei Fan
- State Key Laboratory of Vaccines for Infectious Diseases, Center for Molecular Imaging and Translational Medicine, Xiang An Biomedicine Laboratory, School of Public Health, Xiamen University, Xiamen, Fujian 361102, China
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, National Innovation Platform for Industry-Education Intergration in Vaccine Research, Xiamen University, Xiamen, Fujian 361102, China
| | - Taotao Dong
- State Key Laboratory of Vaccines for Infectious Diseases, Center for Molecular Imaging and Translational Medicine, Xiang An Biomedicine Laboratory, School of Public Health, Xiamen University, Xiamen, Fujian 361102, China
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, National Innovation Platform for Industry-Education Intergration in Vaccine Research, Xiamen University, Xiamen, Fujian 361102, China
| | - Zijing Li
- State Key Laboratory of Vaccines for Infectious Diseases, Center for Molecular Imaging and Translational Medicine, Xiang An Biomedicine Laboratory, School of Public Health, Xiamen University, Xiamen, Fujian 361102, China
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, National Innovation Platform for Industry-Education Intergration in Vaccine Research, Xiamen University, Xiamen, Fujian 361102, China
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Vijayan Y, Teow YH, Mohammad Al-Rajabi M, Wikramasinghe SR. A sustainable development approach of silica recovery and treatment of semiconductor-industry wastewater using ceramic membranes. SEP SCI TECHNOL 2022. [DOI: 10.1080/01496395.2022.2131576] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/10/2022]
Affiliation(s)
- Yogadevan Vijayan
- Department of Chemical and Process Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, Bangi, Malaysia
| | - Yeit Haan Teow
- Department of Chemical and Process Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, Bangi, Malaysia
- Research Centre for Sustainable Process Technology (CESPRO), Universiti Kebangsaan Malaysia, Bangi, Malaysia
| | - Maha Mohammad Al-Rajabi
- Department of Chemical and Process Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, Bangi, Malaysia
| | - S. Ranil Wikramasinghe
- Department of Chemical and Process Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, Bangi, Malaysia
- Ralph E Martin Department of Chemical Engineering, University of Arkansas, Fayetteville, AR, USA
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Kim P, Kim H, Oh H, Kang JS, Lee S, Park K. Influence of Solute Size on Membrane Fouling during Polysaccharide Enrichment Using Dense Polymeric UF Membrane: Measurements and Mechanisms. MEMBRANES 2022; 12:membranes12020142. [PMID: 35207064 PMCID: PMC8878232 DOI: 10.3390/membranes12020142] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Revised: 01/21/2022] [Accepted: 01/22/2022] [Indexed: 02/05/2023]
Abstract
Fouling mechanisms associated with membrane-based polysaccharide enrichment were determined using a dense ultrafiltration (UF) membrane. Dextran with different molecular weights (MWs) was used as a surrogate for polysaccharides. The influence of dextran MW on fouling mechanisms was quantified using the Hermia model. Flux data obtained with different dextran MWs and filtration cycles were plotted to quantify the more appropriate fouling mechanisms among complete pore blocking, standard pore blocking, intermediate pore blocking, and cake filtration. For 100,000 Da dextran, all four mechanisms contributed to the initial fouling. As the filtration progressed, the dominant fouling mechanism appeared to be cake filtration with a regression coefficient (R2) of approximately 0.9519. For 10,000 Da, the R2 value for cake filtration was about 0.8767 in the initial filtration. Then, the R2 value gradually decreased as the filtration progressed. For 6000 Da, the R2 values of the four mechanisms were very low in the initial filtration. However, as the filtration progressed, the R2 value for cake filtration reached 0.9057. These results clearly show that the fouling mechanism of dense UF membranes during polysaccharide enrichment can be quantified. In addition, it was confirmed that the dominant fouling mechanism can change with the size of the polysaccharide and the duration of filtration.
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Affiliation(s)
- Pooreum Kim
- Graduate School of Water Resources, Sungkyunkwan University, Suwon 16419, Korea; (P.K.); (J.-s.K.)
| | - Hyungsoo Kim
- Graduate School of Water Resources, Sungkyunkwan University, Suwon 16419, Korea; (P.K.); (J.-s.K.)
- Correspondence: (H.K.); (S.L.); (K.P.); Tel.: +82-31-290-7520 (H.K.); +82-32-290-7542 (S.L.); +82-31-290-7647 (K.P.)
| | - Heekyong Oh
- School of Environmental Engineering, University of Seoul, Seoul 02504, Korea;
| | - Joon-seok Kang
- Graduate School of Water Resources, Sungkyunkwan University, Suwon 16419, Korea; (P.K.); (J.-s.K.)
| | - Sangyoup Lee
- Graduate School of Water Resources, Sungkyunkwan University, Suwon 16419, Korea; (P.K.); (J.-s.K.)
- Correspondence: (H.K.); (S.L.); (K.P.); Tel.: +82-31-290-7520 (H.K.); +82-32-290-7542 (S.L.); +82-31-290-7647 (K.P.)
| | - Kitae Park
- Graduate School of Water Resources, Sungkyunkwan University, Suwon 16419, Korea; (P.K.); (J.-s.K.)
- Correspondence: (H.K.); (S.L.); (K.P.); Tel.: +82-31-290-7520 (H.K.); +82-32-290-7542 (S.L.); +82-31-290-7647 (K.P.)
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