Surface-Enhanced Infrared Absorption Spectroscopy for Analyzing Nucleophilic Molecules Using Ethylene Glycol Decorated TiO2 Nanosheet
Source abstract
Abstract
Surface-enhanced infrared absorption (SEIRA) spectroscopy has been developed for the nondestructive analysis of trace molecules. Herein, we found that ethylene glycol (EG) decorated TiO2 nanosheet exhibits a selective SEIRA effect for molecules with nucleophilic groups, such as −NH2 and −OH. The SEIRA effect was attributed to the chemical mechanism originating from the interactions between the surface EG and the analytes. The enhancement factor was negatively correlated with the electrophilicity index of the analytes (p = 0.004), and the noncovalent bond dominates the interactions between the analytes and EG. The charge distribution analysis revealed that the −CH2 groups of EG exposed on the TiO2 surface are positively charged, attracting the electron-rich groups of the analyte. This attraction concentrates the analyte, redistributes its charge, defines its molecular dipole moment, and thereby enhances the SEIRA effect. The insights gained from this study shed light on developing new SEIRA substrates and emphasized the critical role of surface ligands in SEIRA applications.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Gold and Silver Nanoparticles Synthesis and Applications · Electrochemical Analysis and Applications · Electrochemical sensors and biosensors
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing100085, China
University of Chinese Academy of Sciences, Beijing100049, China
Shandong Key Laboratory of Environmental Processes and Health, School of Environmental Science and Engineering, Shandong University, Qingdao266237, China
Funding
National Natural science foundation of china
References (30)
Show source-provided references
1. 10.1021/acs.chemrev.6b0074310.1021/acs.chemrev.6b00743 ↗
2. 10.1002/adma.20170489610.1002/adma.201704896 ↗
3. 10.1021/acsnano.9b0422410.1021/acsnano.9b04224 ↗
4. 10.1038/s41377-021-00599-210.1038/s41377-021-00599-2 ↗
5. 10.1515/nanoph-2020-003710.1515/nanoph-2020-0037 ↗
6. 10.1039/b705969h10.1039/b705969h ↗
7. 10.1038/s42003-020-01615-810.1038/s42003-020-01615-8 ↗
8. 10.1021/acsomega.0c0160510.1021/acsomega.0c01605 ↗
9. 10.1039/D0TC02653K10.1039/D0TC02653K ↗
10. 10.1021/acsphotonics.9b0064510.1021/acsphotonics.9b00645 ↗
11. 10.1021/acs.jpcc.9b0459710.1021/acs.jpcc.9b04597 ↗
12. 10.1021/acsphotonics.8b0002810.1021/acsphotonics.8b00028 ↗
13. 10.1039/c2cs35057b10.1039/c2cs35057b ↗
14. 10.1126/science.aaf525110.1126/science.aaf5251 ↗
15. 10.1016/j.molliq.2017.10.02010.1016/j.molliq.2017.10.020 ↗
16. 10.1039/C9TC05062K10.1039/C9TC05062K ↗
17. 10.1021/acs.nanolett.8b0357210.1021/acs.nanolett.8b03572 ↗
18. 10.1016/j.jhazmat.2020.12399910.1016/j.jhazmat.2020.123999 ↗
19. 10.1039/c0cc02327b10.1039/c0cc02327b ↗
20. 10.1016/0927-0256(96)00008-010.1016/0927-0256(96)00008-0 ↗
21. 10.1103/PhysRevLett.77.386510.1103/PhysRevLett.77.3865 ↗
22. Frisch, M. J.; Trucks, G. W.; Schlegel, H. B.; Scuseria, G. E.; Robb, M. A.; Cheeseman, J. R.; Scalmani, G.; Barone, V.; Mennucci, B.; Petersson, G. A.; Nakatsuji, H.; Caricato, M.; Li, X.; Hratchian, H. P.; Izmaylov, A. F.; Bloino, J.; Zheng, G.; Sonnenberg, J. L.; Hada, M.; Ehara, M.; Toyota, K.; Fukuda, R.; Hasegawa, J.; Ishida, M.; Nakajima, T.; Honda, Y.; Kitao, O.; Nakai, H.; Vreven, T.; Montgomery, J. A., Jr.; Peralta, J. E.; Ogliaro, F.; Bearpark, M.; Heyd, J. J.; Brothers, E.; Kudin, K. N.; Staroverov, V. N.; Kobayashi, R.; Normand, J.; Raghavachari, K.; Rendell, A.; Burant, J. C.; Iyengar, S. S.; Tomasi, J.; Cossi, M.; Rega, N.; Millam, J. M.; Klene, M.; Knox, J. E.; Cross, J. B.; Bakken, V.; Adamo, C.; Jaramillo, J.; Gomperts, R.; Stratmann, R. E.; Yazyev, O.; Austin, A. J.; Cammi, R.; Pomelli, C.; Ochterski, J. W.; Martin, R. L.; Morokuma, K.; Zakrzewski, V. G.; Voth, G. A.; Salvador, P.; Dannenberg, J. J.; Dapprich, S.; Daniels, A. D.; Farkas, O.; Foresman, J. B.; Ortiz, J. V.; Cioslowski, J.; Fox, D. J. Gaussian 09, revision A.01; Gaussian, Inc.: Wallingford, CT, 2009.
23. 10.1103/PhysRevA.38.309810.1103/PhysRevA.38.3098 ↗
24. 10.1103/PhysRevB.37.78510.1103/PhysRevB.37.785 ↗
25. 10.1021/jp304365v10.1021/jp304365v ↗
26. 10.1021/es502502n10.1021/es502502n ↗
27. 10.1021/acs.est.0c0499110.1021/acs.est.0c04991 ↗
28. 10.1021/es010663w10.1021/es010663w ↗
29. 10.1021/ja983494x10.1021/ja983494x ↗
30. 10.1038/nenergy.2015.1610.1038/nenergy.2015.16 ↗