2-Hydroxy-1-naphthaldehyde is often used as an excellent functionalised fluorescent backbone for the synthesis of different fluorescent chemosensors. In this fluorophore, the OH moiety in 2-position acts as a hydrogen bond donor site and the aldehyde group and its derivatives in 1-position acts as hydrogen bond acceptor site. For this reason, here in this review we have presented different molecules in which the new transformations of the aldehyde group and the naphthyl-OH group create several sensors for different cations (Al³⁺, Zn²⁺, Fe³⁺, Hg²⁺, Cu²⁺, Na⁺, K⁺, Fe²⁺, Mg²⁺, Pb²⁺, Cr³⁺, etc), anions (AcO^̄, F^̄, CN^̄, PPi, I^̄, NO₂^̄) as well as both cations and anions in a single platform. Furthermore the different chemodosimetric approaches for sensing different anions, toxic species (N₂H₄, H₂S), reactive substrates (OCl^̄) and also the nerve agents have also been demonstrated in this review. The sensing phenomenon is based on different fluorometric pathways [ICT, ESIPT, CHEF, CHEQ, PET, CIFE, AIE] and various mechanistic pathways [NGP (Neighbouring group participation), strong hydorgen bonding interaction, CN isomerisation, Michael addition, oxidation and reduction of different functionalities, spirocyclic ring opening, different analyte induced protection-deprotection techniques, complexation and de-complexation stategy, logic-gate, key-pad-lock etc]. The various sensing of naphthalene based different sensors has also been used in the biological assay.

2-羟基-1-萘醛通常用作合成不同荧光化学传感器的出色功能化荧光骨架。在该荧光团中，在2位的OH部分充当氢键供体位点，并且在1位的醛基及其衍生物充当氢键受体位点。因此，在本综述中，我们介绍了不同的分子，其中醛基和萘基-OH基团的新转化为不同的阳离子（Al ³⁺，Zn 2 ⁺，Fe ³⁺，Hg ²⁺，Cu 2 ⁺，Na ⁺，K ⁺，Fe 2 ⁺，Mg 2 ⁺，Pb ²⁺，铬³⁺等），阴离子（ACO ^̄，F ^̄，CN ^̄，PPI，我^̄，NO ₂ ^̄）以及在单一平台阳离子和阴离子。此外，本综述还证明了用于感测不同阴离子，有毒物质（N ₂ H ₄，H ₂ S），反应性底物（^OCl̄）和神经毒剂的不同化学计量学方法。感应现象是基于不同的荧光途径[ICT，ESIPT，CHEF，CHEQ，PET，CIFE，AIE]和各种机理途径[NGP（邻域参与），强大的氢键相互作用，CN异构化，迈克尔加成，不同官能团的氧化和还原，螺环开环，不同分析物诱导的保护-脱保护技术，络合和解络策略，逻辑门，键锁等]。基于萘的不同传感器的各种感测也已用于生物测定中。