Click Preparation of Triazole-Bridged Aggregation-Induced Emission Aromatic Acid Probe for the Selective Determination of Aluminium Ion

Abstract

A novel aggregation induced emission (AIE) aromatic acid probe tetraphenylethene (TPE) – triazole-COOH (TTC) was synthesized via click chemistry bridging the (TPE) with ethynylpropionate followed with hydrolysis in alkaline conditions. The novel probe shows a highly specific turn-on fluorescence response toward Al³⁺ by the synergistic effects of triazole and the carboxyl group. Here is proposed a novel synergistic recognition mechanism. The TTC probe shows excellent aggregation induced emission aqueous dimethyl sulfoxide and may be induced to aggregate by Al³⁺ in this solution. A linear response between the fluorescence intensity and the concentration of Al³⁺ was obtained across the range from 1 µM to 6 µM with a low limit of detection equal to 1 µM.

Keywords:

• Aggregation induced emission (AIE)
• click chemistry
• fluorescence probe
• triazole

Additional information

Funding

This work was supported by the National Natural Science Foundation of China (numbers 21922409 and 21976131) and the Tianjin Research Program of Application Foundation and Advanced Technology (18JCZDJC37500, 17JCYBJC20500).