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• W4361213859 endingPage "122666" @default.
• W4361213859 startingPage "122666" @default.
• W4361213859 abstract "Using density functional theory (DFT) and time-dependent density functional theory (TDDFT), we investigate the fluorescence mechanism of (E)-4-(3-(benzo[d]thiazol-2-yl)-2-hydroxy-5-methylstyryl)-1-methylpyridin-1-ium (HBTMY) and the excited-state intramolecular proton transfer process (ESIPT) of hydroxyphenyl. Herein, we introduce two electron-donating (amino and methoxy) and two electron-withdrawing (hydrogen and cyano) groups into HBTMY to study their effects on the fluorescence and the ESIPT process. Structural parameters, infrared vibration frequency, vertical excitation and emission energies as well as frontier molecular orbitals show that the substituents have different impacts on intramolecular hydrogen bonding behavior. The result shows that the fluorescence wavelength of molecules with the amino group could reach the near-infrared area, which favors using this fluorescence in the living cell. As the ability of electron-absorbing groups increases, the forward energy barrier in the potential energy curves decreases sharply making the ESIPT process more familiar to take place. Thus, this work offers a guide for cell imaging and provides strategies to adjust and control fluorescence by introducing substituents." @default.
• W4361213859 created "2023-03-31" @default.
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• W4361213859 date "2023-08-01" @default.
• W4361213859 modified "2023-10-16" @default.
• W4361213859 title "Control of the fluorescence molecule 2-(2′-hydroxyphenyl) benzothiazole derivatives by introducing electron-donating and withdrawing substituents groups" @default.
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• W4361213859 doi "https://doi.org/10.1016/j.saa.2023.122666" @default.
• W4361213859 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/37043917" @default.
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