苏延磊
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- 姓名:苏延磊
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学科领域:
勘探地球物理学
- 研究兴趣:
苏延磊,2005年3月至今,天津大学化化工学院化学工艺系,副教授,从事新型分离科学与技术的科研和教学。2003年3月至2005年2月,中科院化学研究所,博士后。1999年9月至2003年3月,中科院过程工程研究所,博士研究生。1996年9月至1999年7月,山东大学化学学院,硕士研究生。
已经发表SCI收录论文近50篇,引用次数超过200次。获得中科院优秀博士学位论文,北京市科学技术奖二等奖,中国科学院院长优秀奖,中科院王宽诚博士后工作奖励基金,第三十三批中国博士后科学基金,中国分析测试协会科学技术奖(CAIA奖)二等奖。
目前开展膜分离科学和技术方面的研究,关注通透性仿生膜、抗污染膜、刺激响应(智能)膜、可控吸附-脱附膜等。自主研发的抗污染超滤膜,具备良好的通透性和截留特性,可以用于蛋白质的分离和纯化、水处理、中药提取液的精制等方面。
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4035
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成果阅读
383
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成果数
10
【期刊论文】A strategy for immunoassay signal amplification using clusters of immunogold nanoparticles
苏延磊, Yan-lei Su
Applied Surface Science 253 (2006) 1101–1106,-0001,():
-1年11月30日
The clusters of immunogold nanoparticles were fabricated through cross-linking immunogold nanoparticles with glutaraldehyde. A novel strategy for immunoassay signal amplification using the clusters of immunogold nanoparticles on glass slides based on electroless deposition was described. The immunoassay signal amplification through the clusters of immunogold nanoparticles was about three to four times higher than that through single immunogold nanoparticles. The purple attachments were readily discernible on glass slides by naked eye at a concentration of 0.1 pg/mL antigen in PBS solution. The indirect detection of antigen using the clusters of immunogold nanoparticles is an efficient way to improve the detection sensitivity.
Immunoassay signal amplification, Clusters of immunogold nanoparticles
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【期刊论文】Stable multilayer thin films composed of gold nanoparticles and lysozyme
苏延磊, Yan-lei Su, Chao Li
Applied Surface Science 254 (2008) 2003–2008,-0001,():
-1年11月30日
It needs appropriately attractive forces to construct multilayer thin films by layer-by-layer (LBL) assembly technique. It is feasible to prepare multilayer thin films on glass slides with negatively charged gold nanoparticles and positively charged lysozyme through the electrostatic LBL assembly technique. The gold nanoparticles/lysozyme multilayer thin films are highly stable; immersion in 0.1 M HCl, NaOH, and surfactant sodium dodecyl sulfate aqueous solutions cannot destroy the films. The highly stable gold nanoparticles/lysozyme multilayer thin films have potential application in long-term antibacterial coating.
Gold nanoparticle, Lysozyme, Film, Stability, Antibacterial coating
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【期刊论文】Tunable water flux of a weak polyelectrolyte ultrafiltration membrane
苏延磊, Yanlei Su, Chao Li
Journal of Membrane Science 305 (2007) 271–278,-0001,():
-1年11月30日
A weak polyelectrolyte ultrafiltration membrane based on poly(acrylonitrile and 2-dimethylamino ethyl methacrylate) (PAN-DMAEMA) copolymer was prepared by phase inversion in a wet process. PAN-DMAEMA membrane has the typical asymmetric structure. The results of X-ray photoelectron spectroscopy (XPS) analysis have shown enrichment of PDMAEMA on the membrane surface. Water flux of PAN-DMAEMA ultrafiltration membrane is tunable due to the switch of the stretched and collapsed states of PDMAEMA chains at different pH and NaCl concentration in the feed solutions. The water flux of PAN-DMAEMA membrane cannot reversibly recover its original flux after environmental stimuli; the reason may be that the residual exchanged-ions and ionic pairs disturb the switch of polymer conformation of PDMAEMA in the skin layer of ultrafiltration membrane.
Weak polyelectrolyte, Ultrafiltration membrane, Tunable water flux
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34浏览
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358下载
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苏延磊, Xiaole Ma, Yanlei Su, Qiang Sun, Yanqiang Wang, Zhongyi Jiang
Journal of Membrane Science 292 (2007) 116–124,-0001,():
-1年11月30日
An amphiphilic comb copolymer with polystyrene as hydrophobic parts and poly(ethyl glycol) (PEG) as hydrophilic parts was blended with polyethersulfone (PES) to fabricate high protein-adsorption-resistant ultrafiltration membranes through a phase inversion process. The hydrophilic PEG segments were spontaneously segregated to the membrane surface during immersion precipitation, which was confirmed by the water contact angle measurement and X-ray photoelectron spectroscopy (XPS). The PEG-enriched surface exhibited higher hydrophilicity and the amount of protein adsorption was remarkably decreased from 6.8 to 0.5μg/cm2. Ultrafiltration experiments showed that the antifouling property of the blend membranes was considerably improved with slight change of permeation properties, and the resistance caused by irreversible fouling was remarkably decreased from 2.70×1012 to 0.34×1012 m−1. The superior protein-adsorption-resistance rendered blend membranes more desirable recycling property. The flux recovery ratio was remained as high as 80.4% after three cycles of BSA ultrafiltration.
Polyethersulfone, Comb copolymer, Surface segregation, Blend membrane, Protein-adsorption-resistance
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苏延磊, Yan-lei Su, Chao Li
Reactive & Functional Polymers 68 (2008) 161–168,-0001,():
-1年11月30日
Poly(acrylonitrile) (PAN)-based zwitterionic membranes were fabricated through phase inversion in a wet process. It was found that bovine serum albumin (BSA) can adsorb on PAN-based zwitterionic membranes in the absent of electrolyte. A new viewpoint based on electrostatic interactions between the charged amino acid residues in BSA and dipole moments of sulfobetaine groups in the zwitterionic polymers in the absent of salt was put forward to explain the adsorption of protein on the zwitterionic membranes. The adsorbed BSA on PAN-based zwitterionic membranes can be released fast and completely from the membranes at higher NaCl concentration. The controlled adsorption and desorption of BSA on PAN-based zwitterionic membranes was achieved through adjusting NaCl concentration in solution.
Zwitterionic membrane, Bovine serum albumin (, BSA), , Adsorption, Desorption
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【期刊论文】Preparation of polydiacetylene/silica nanocomposite for use as a chemosensor
苏延磊, Yan-lei Su
Reactive & Functional Polymers 66 (2006) 967–973,-0001,():
-1年11月30日
A new approach of creating ordered polydiacetylene assembly is reported. The disordered 10, 12-pentacosadiynoic acid (PCDA) aggregates adsorb on the surfaces of silica nanoparticles in the aqueous solution, the interactions induce ordered arrangement of PCDA molecules, which undergo polymerization by exposure to UV light. This is a feasible and efficient method for preparing the chromatic sensor films of polydiacetylene. The strategy would be useful in the development of polydiacetylene-based chemosensors and biosensors.
Polydiacetylene, Silica nanoparticle, Chemosensor
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446下载
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【期刊论文】A novel multilayer film with temperature dependent solubilization property
苏延磊, Yan-lei Su, Chao Li
Reactive & Functional Polymers 67 (2007) 233–240 ,-0001,():
-1年11月30日
A PEO-PPO-PEO block copolymer, Pluronic P123, was reacted with phosphorus oxychloride for the synthesis of phosphorylation substitution of Pluronic P123 (PS-P123). A novel multilayer film composed of PS-P123 micelles was fabricated by alternating deposition of the negatively charged polymer micelles and positively charged polyethylenimine (PEI). Pyrene as a model hydrophobic organic molecule was loaded into the PS-P123 micelles. The PEI/PS-P123 multilayer films have temperature dependent solubilization property due to the formation of more hydrophobic microenvironment at higher immersed solution temperature. The reversible loading and release of pyrene by the multilayer films was also observed. The PEI/PS-P123 multilayer films have potential use in controlled drug release, extraction, and other technical use.
Multilayer thin film, Block copolymer, Temperature dependent solubilization
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31浏览
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377下载
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苏延磊, Yan-Qiang Wang, Yan-Lei Su, Xiao-Le Ma, Qiang Sun, Zhong-Yi Jiang
Journal of Membrane Science 283 (2006) 440–447,-0001,():
-1年11月30日
Hydrophilic modification of polyethersulfone (PES) membranes was achieved by blending Pluronic polymers with different contents and PEO chain length. The static water contact angle measurements and X-ray photoelectron spectroscopy analysis confirmed the enrichment of PEO chain at blend membranes surface. Effect of Pluronic polymer content and PEO chain length on ultrafiltration performance and fouling-resistant ability of blend membranes was studied. The results indicated that except for PES–P123 blend membranes, the water fluxes of blend membranes were higher than that of PES control membrane. Meanwhile, increasing Pluronic content or PEO chain length both improved the fouling-resistant ability of blend membranes significantly. Finally, the outstanding flux recovery property of blend membranes ensured the long-run utilization time and operation reliability.
Polyethersulfone, Pluronic polymer, Blend membranes, PEO chain density, PEO chain length
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34浏览
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687下载
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苏延磊, Yan-Qiang Wang, , Yan-Lei Su, Qiang Sun, Xiao-Le Ma, Zhong-Yi Jiang
Journal of Membrane Science 286 (2006) 228–236,-0001,():
-1年11月30日
Branched amphiphilic copolymers with peculiar structural and physicochemical characteristics may find promising application in generating fouling-resistant membrane surface. In this study, novel branched amphiphilic copolymers, P123-b-PEGs, were synthesized by reacting Pluronic P123 with PEG400 using PCl3 as a conjugation reagent, and this novel amphiphilic copolymers were blended with polyethersulfone (PES) to prepare ultrafiltration membranes with superior protein-adsorption-resistant ability. The static water contact angle and X-ray photoelectron spectroscopy revealed the remarkable enrichment of PEO segments at blend membrane surface, as well as the inherent relationship between near-surface coverage and PEO arm number in P123-b-PEG copolymers. Investigations on protein adsorption on blend membranes showed that the protein adsorption amount was significantly decreased. The results of ultrafiltration experiments revealed that the reversible fouling resistance composed the dominated part of total fouling resistance, which endowed the blend membranes containing P123-b-PEG copolymers with higher flux recovery ratio.
Polyethersulfone, Pluronic P123, Branched polymers, Blend membranes, Membrane fouling
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苏延磊, Yan-Lei Su, ChaoLi
Journal of Colloid and Interface Science 316 (2007) 344–349,-0001,():
-1年11月30日
There is a dense poly(2-dimethylamino ethyl methacrylate) (PDMAEMA) layer on the surface of poly(acrylonitrile and 2-dimethylamino ethyl methacrylate) (PAN-DMAEMA) membrane. The contact angle measurement indicated that the hydrophilicity of membrane increases at higher pH value and ionic strength. The reorientation of PDMAEMA after environment stimuli results in further enrichment of ester groups on the membrane surface according to XPS analysis. The amount of adsorbed bovine serum albumin (BSA) on PAN-DMAEMA membrane is dramatically decreased at higher pH value and ionic strength. A viewpoint based on the minimizing electrostatic interactions between PDMAEMA groups after environment stimuli leading to the conformation switch of PDMAEMA chains from stretched to shrunk states, which results in higher surface enrichment of ester groups enhancing hydrophilic property of the PAN-DMAEMA membrane, was put forward to explain the resistance of protein adsorption on the membrane.
Membrane, Protein adsorption, Hydrophilicity, Antifouling
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