A multifunctional fluorescent probe for highly selective detection of hydrazine and discovering the interplay between AIE and ICT

• Published in: Dyes and pigments Vol. 175; p. 108111
• Main Authors: Zhu, Ji-hua, Zhang, Hao, Liao, Yuan, Liu, Jing-jiang, Quan, Zheng-jun, Wang, Xi-cun
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 01.04.2020
• Subjects: Aggregation induced emission; Density functional theory; Fluorescent probe; Hydrazine (N2H4); Intramolecular charge transfer; Density functional theory; Aggregation induced emission; Intramolecular charge transfer; Hydrazine (N2H4); Fluorescent probe
• ISSN: 0143-7208; 1873-3743
• DOI: 10.1016/j.dyepig.2019.108111

A multifunctional luminescent material (BC–B) was synthesized, which exhibits aggregation-induced emission (AIE) enhancement property in high water fraction. The AIE shows a significant impact on the intramolecular charge transfer (ICT) process by controlling intramolecular motion. The above result is demonstrated by density functional theory (DFT) calculations and single-crystal X-ray diffraction. To decrease the influence of AIE on ICT, the probe BC-B is exploited as turn-on fluorescent probe for hydrazine (N2H4) in DMSO/PBS buffer (6/4, v/v) and displays high sensitivity and selectivity. Besides, the fluorescence emission shows a good linear response (R2 = 0.9960) in the range of 0–35 μM with the low detection limit of 1.29 ppb, which is significantly below the acceptable limit for hydrazine (10 ppb) set by the USEPA. [Display omitted] •A novel fluorescent probe BC-B was synthesized and showed aggregation-induced emission (AIE) enhancement performance.•The influences of the AIE on the ICT process were demonstrated by DFT calculations and single-crystal X-ray diffraction.•The probe BC-B was applied to turn-on detection of N2H4 by lessening the AIE influences on the ICT process.