揭示阴离子-π键的作用--碘化物选择性有机探针的新范例

IF 4.1 3区工程技术 Q2 CHEMISTRY, APPLIED

Dyes and Pigments Pub Date : 2024-10-18 DOI:10.1016/j.dyepig.2024.112498

Gopal Balamurugan , Wei Zhang , Ye Won Choi , Ji Min Park , Sivan Velmathi , Jong S. Park

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引用次数: 0

摘要

这篇综述文章揭示了阴离子-π键在碘化物选择性超分子化学传感器中的重要作用。与其他卤化离子相比，碘离子选择性化学传感器由于其较低的碱性和亲核性而较少受到关注。不过，一些超分子有机传感器利用了碘阴离子的较大尺寸，使其能够轻易地进入受体的空腔或伪空腔。其中，碘化物选择性传感器通常会在吸光度光谱中产生新的电荷转移带和荧光淬灭，这与阴离子-π非共价相互作用的效果非常相似。这篇综述文章细致地探讨了大量证据，证实宿主分子和客体分子之间存在阴离子-π键。目前的发现有可能为设计和探索基于阴离子-π键的超分子探测器开创一个新范例。还应该强调的是，我们的一个重要目标是让科学家们认识到不太常见的阴离子-π键及其在阴离子识别、非共价有机框架和自组装方面的广泛应用。

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Unmasking the role of anion-π bonding - A new paradigm for iodide selective organic probes

This review article undiscloses the significance of anion-π bonding in iodide-selective supramolecular chemosensors. Due to their lower basicity and nucleophilicity, iodide-selective chemosensors have received less attention than other halide ions. However, several supramolecular organic sensors have emerged by utilizing the larger size of the iodide anion, allowing it to fit into the receptor's cavity or pseudo-cavity readily. Therein, it was frequently presented that iodide-selective sensors typically involved new charge transfer bands in absorbance spectra and a fluorescence quenching, closely resembling the effects of anion-π non-covalent interactions. This review article meticulously explores the substantial evidence confirming the presence of anion-π bonding between the host and guest molecules. The current discovery has the potential to usher in a new paradigm in designing and exploring supramolecular detectors based on anion-π bonding. It should also be emphasized that an important objective is to create awareness among scientists about the less common anion-π bonding and its versatile applications toward anion recognition, non-covalent organic frameworks, and self-assemblies.

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来源期刊

Dyes and Pigments 工程技术-材料科学：纺织

CiteScore

8.20

自引率

13.30%

发文量

933

审稿时长

33 days

期刊介绍： Dyes and Pigments covers the scientific and technical aspects of the chemistry and physics of dyes, pigments and their intermediates. Emphasis is placed on the properties of the colouring matters themselves rather than on their applications or the system in which they may be applied. Thus the journal accepts research and review papers on the synthesis of dyes, pigments and intermediates, their physical or chemical properties, e.g. spectroscopic, surface, solution or solid state characteristics, the physical aspects of their preparation, e.g. precipitation, nucleation and growth, crystal formation, liquid crystalline characteristics, their photochemical, ecological or biological properties and the relationship between colour and chemical constitution. However, papers are considered which deal with the more fundamental aspects of colourant application and of the interactions of colourants with substrates or media. The journal will interest a wide variety of workers in a range of disciplines whose work involves dyes, pigments and their intermediates, and provides a platform for investigators with common interests but diverse fields of activity such as cosmetics, reprographics, dye and pigment synthesis, medical research, polymers, etc.