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| Hydrated Ionic Liquids Boost the Trace Detection Capacity of Proteins on TiO2 Support | |
| Dong, Yihui5; Laaksonen, Aatto1,2,3,4; Huo, Feng5; Gao, Qingwei6,7; Ji, Xiaoyan1 | |
| 2021-04-27 | |
| Source Publication | LANGMUIR
 |
| ISSN | 0743-7463 |
| Volume | 37Issue:16Pages:5012-5021 |
| Abstract | Trace detection based on surface-enhanced Raman scattering (SERS) has attracted considerable attention, and exploiting efficient strategies to stretch the limit of detection and understanding the mechanisms on molecular level are of utmost importance. In this work, we use ionic liquids (ILs) as trace additives in a protein-TiO2 system, allowing us to obtain an exceptionally low limit of detection down to 10(-9) M. The enhancement factors (EFs) were determined to 2.30 x 10(4), 6.17 x 10(4), and 1.19 x 10(5), for the three systems: one without ILs, one with ILs in solutions, and one with ILs immobilized on the TiO2 substrate, respectively, corresponding to the molecular forces of 1.65, 1.32, and 1.16 nN quantified by the atomic force microscopy. The dissociation and following hydration of ILs, occurring in the SERS system, weakened the molecular forces but instead improved the electron transfer ability of ILs, which is the major contribution for the observed excellent detection. The weaker diffusion of the hydrated IL ions immobilized on the TiO2 substrate did provide a considerably greater EF value, compared to the ILs in the solution. This work clearly demonstrates the importance of the hydration of ions, causing an improved electron transfer ability of ILs and leading to an exceptional SERS performance in the field of trace detection. Our results should stimulate further development to use ILs in SERS and related applications in bioanalysis, medical diagnosis, and environmental science. |
| DOI | 10.1021/acs.langmuir.1c00525 |
| Language | 英语 |
| WOS Keyword | ENHANCED RAMAN-SCATTERING ; HIGH-RESOLUTION ; IN-SITU ; SERS ; NANOTUBES ; NANOPARTICLES ; ORIENTATION ; ADSORPTION ; BEHAVIOR ; SENSOR |
| Funding Project | National Natural Science Foundation of China[22078321] ; National Natural Science Foundation of China[21878295] ; Swedish Research Council ; Ministry of Research and Innovation of Romania (CNCS - UEFISCDI)[PN-III-P4-ID-PCCF-2016-0050] |
| WOS Research Area | Chemistry ; Materials Science |
| WOS Subject | Chemistry, Multidisciplinary ; Chemistry, Physical ; Materials Science, Multidisciplinary |
| Funding Organization | National Natural Science Foundation of China ; Swedish Research Council ; Ministry of Research and Innovation of Romania (CNCS - UEFISCDI) |
| WOS ID | WOS:000645431900027 |
| Publisher | AMER CHEMICAL SOC |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.ipe.ac.cn/handle/122111/48763 |
| Collection | 中国科学院过程工程研究所 |
| Corresponding Author | Dong, Yihui; Ji, Xiaoyan |
| Affiliation | 1.Lulea Univ Technol, Div Energy Sci, Energy Engn, S-97187 Lulea, Sweden 2.Stockholm Univ, Dept Mat & Environm Chem, Arrhenius Lab, SE-10691 Stockholm, Sweden 3.Nanjing Tech Univ, State Key Lab Mat Oriented Chem Engn, Nanjing 210009, Peoples R China 4.Petru Poni Inst Macromol Chem, Ctr Adv Res Bionanoconjugates & Biopolymers, Iasi 700487, Romania 5.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing Key Lab Ion Liquids Clean Proc,CAS Key La, Beijing 100190, Peoples R China 6.East China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China 7.East China Univ Sci & Technol, Sch Chem Engn, Shanghai 200237, Peoples R China |
| Recommended Citation GB/T 7714 | Dong, Yihui,Laaksonen, Aatto,Huo, Feng,et al. Hydrated Ionic Liquids Boost the Trace Detection Capacity of Proteins on TiO2 Support[J]. LANGMUIR,2021,37(16):5012-5021. |
| APA | Dong, Yihui,Laaksonen, Aatto,Huo, Feng,Gao, Qingwei,&Ji, Xiaoyan.(2021).Hydrated Ionic Liquids Boost the Trace Detection Capacity of Proteins on TiO2 Support.LANGMUIR,37(16),5012-5021. |
| MLA | Dong, Yihui,et al."Hydrated Ionic Liquids Boost the Trace Detection Capacity of Proteins on TiO2 Support".LANGMUIR 37.16(2021):5012-5021. |
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