A new fluorescent probe composed of cucurbit[10]uril (Q[10]) and a water-soluble derivative of pyrene, aminopropyl-1-pyrenebutanamide (PBA), is designated. ¹H NMR spectroscopy reveals that PBA is encapsulated into Q[10] in an aqueous solution to form a stable 1:1 host-guest inclusion complex of [email protected][10]. This complex behaves as a highly selective fluorescence quenching probe for Fe³⁺ in aqueous solutions that may be attributed to the efficient absorption of Fe³⁺, which hindering absorption of [email protected][10] probe at the excitation wavelength of 332 nm, and competitive experiments for the coexistence of Fe³⁺ with one or all of the other metal ions (37 metal ions) reveals that the selectivity of [email protected][10] to Fe³⁺ is not disturbed by the addition of 50.0 equiv. of the other metal ions. The limits of detection of Fe³⁺ was determined to be 0.55 mM. Furthermore, the fluorescence enhancing effect of [email protected][10] for Ag⁺ is detected at the above wavelength. According to the mechanistic studies, the fluorescence enhancing route involves interaction of Ag⁺ ions with the probe, mainly under an internal charge transfer between Ag⁺ and the probe. Outcomes of this study suggest that [email protected][10] probably functions as a potential and promising fluorescence sensor for monitoring of different polluting metal ions in waste waters.

指定了一种新的荧光探针，该探针由葫芦[10]尿素（Q [10]）和pyr的水溶性衍生物氨丙基-1-吡喃丁酰胺（PBA）组成。¹ H NMR光谱显示，PBA被包裹在水溶液中的Q [10]中，形成稳定的[电子邮件保护] [10]的1：1主体-客体包涵体。该络合物在水溶液中起Fe ³⁺的高选择性荧光猝灭探针的作用，这可能归因于Fe ³⁺的有效吸收，这阻碍了[email protected] [10]探针在332 nm的激发波长处的吸收， Fe ³⁺共存和竞争实验与一种或所有其他金属离子（37种金属离子）的反应表明，[email protected] [10]对Fe ³⁺的选择性不受添加50.0当量的影响。其他金属离子。Fe ³⁺的检出限确定为0.55 mM。此外，在上述波长下检测到[电子邮件保护] [10]对Ag ⁺的荧光增强作用。根据机理研究，荧光增强途径涉及Ag ⁺离子与探针的相互作用，主要是在Ag ⁺之间的内部电荷转移下和探针。这项研究的结果表明，[电子邮件保护] [10]可能是一种潜在且有前途的荧光传感器，可用于监测废水中不同污染的金属离子。