Density Functional Theory and Raman Spectroscopy Studies of Adsorption Sites of Au Nanoparticles with Alectinib

Chang Guo; Xun Gao; Qi Wang; Chao Song; Hailong Yu; Qiuyun Wang; Yinping Dou; Jingquan Lin

doi:10.1021/acs.langmuir.3c03241

Density Functional Theory and Raman Spectroscopy Studies of Adsorption Sites of Au Nanoparticles with Alectinib

Langmuir. 2023 Dec 26;39(51):19048-19055. doi: 10.1021/acs.langmuir.3c03241. Epub 2023 Dec 14.

Authors

Chang Guo¹, Xun Gao^{2

3}, Qi Wang², Chao Song¹, Hailong Yu², Qiuyun Wang², Yinping Dou², Jingquan Lin^{2

3}

Affiliations

¹ School of Chemistry and Environmental Engineering, Changchun University of Science and Technology, Changchun 130022, China.
² School of Physics, Changchun University of Science and Technology, Changchun 130022, China.
³ Zhongshan Institute of Changchun University of Science and Technology, Zhongshan528400,Guangdong ,China.

PMID: 38096548
DOI: 10.1021/acs.langmuir.3c03241

Abstract

Alectinib is an ALK tyrosine kinase inhibitor, which is mainly used in patients with crizotinib-resistant nonsmall cell lung cancer. Alectinib has attracted much clinical attention for its longest progression-free survival time and the best therapeutic effect. The chemical adsorption of Au nanoclusters (AuNPs) with alectinib molecules is studied by density functional theory (DFT) and surface-enhanced Raman scattering spectroscopy (SERS) experiments. DFT/B3LYP-D3/6-311G** was used for optimization and vibration analysis of alectinib-Au₆ complexes, as well as molecular electrostatic potential, frontier molecular orbital, and electro-optic-based charge transfer descriptors. Comparing the results of the DFT theory and SERS experiment, alectinib and AuNPs can form Au-N6 bonds primarily through chemical adsorption of N6 atoms, and the experimental results showed that the enhancement factor (EFCHEM) could reach 4.27. The results provide a theoretical basis for exploring the mechanism of chemical enhancement between AuNPs and alectinib.