Naphthalene, white crystalline solid having polycyclic aromatic hydrocarbon with characteristic mothball order is naturally present in crucial oils of various plants. Naphthalene derivatives are extensive drug resources and are use as wetting agents, surfactants and as insecticides. These derivatives exhibit unique photo physical and chemical properties. These characteristics make them the most studied group of organic compounds. Naphthalene dyes have rigid plane and large π-electron conjugation. Therefor they have high quantum yield and excellent photostability. Naphthalene based fluorescence probes due to hydrophobic nature exhibit excellent sensing and selectivity properties towards anions and cations and also used as a part of target biomolecules. In conjugated probe system, introducing naphthalene moiety caused improvement in photo-stability. Therefore among various conjugated framework, naphthalene derivatives are considered excellent candidate for the construction of organic electronic appliances. These derivatives are useful for a variety of applications owing to their strong fluorescence, electroactivity and photostability. This article is based upon investigation of photophysical properties of naphthalene derivatives and fluorescence detecting probe of naphthalene. For photophysical properties the techniques under investigation are UV visible spectroscopy and fluorescence spectroscopy. Concentration dependent spectra and solvatochromic shifts on UV visible spectra are also part of discussion.

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萘及其衍生物：用于检测和成像目的的高效荧光探针

萘，白色结晶固体，具有多环芳烃，具有特征性的樟脑顺序，天然存在于各种植物的精油中。萘衍生物是广泛的药物资源，用作润湿剂、表面活性剂和杀虫剂。这些衍生物表现出独特的光物理和化学性质。这些特性使它们成为研究最多的有机化合物。萘染料具有刚性平面和大的π电子共轭性。因此它们具有高量子产率和优异的光稳定性。由于疏水性，萘基荧光探针对阴离子和阳离子表现出优异的传感和选择性特性，也用作目标生物分子的一部分。在共轭探针系统中，引入萘部分可以改善光稳定性。因此，在各种共轭骨架中，萘衍生物被认为是构建有机电子器件的优秀候选者。这些衍生物由于其强荧光、电活性和光稳定性而具有多种应用。本文基于萘衍生物的光物理性质和萘荧光检测探针的研究。对于光物理性质，正在研究的技术是紫外可见光谱和荧光光谱。浓度相关光谱和紫外可见光谱上的溶剂化变色位移也是讨论的一部分。

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