A new chemosensor (NANH) based on naphthyl moiety was synthesized with good selectivity and sensitivity towards Al³⁺ ions via the inhibition by operating through dual mechanisms like photo-induced electron transfer (PET) and excited-state intramolecular proton transfer (ESIPT). The synthesized NANH was validated by various techniques such as ¹H, ¹³C NMR and mass spectrum. While prominent fluorescent enhancement was observed from the NANH upon binding with Al³⁺ ions, however, other metal ions have not responded in the emission spectrum. Detection limit and association constant of NANH for Al³⁺ were calculated as 1.2 × 10⁻⁷ M and 4.09 × 10⁴ M⁻¹ by using fluorescence titration method. Binding ratio (1:1) of NANH with Al³⁺ ions were proved by Job's plot and DFT studies. Furthermore, aluminium in variety of water samples was determined, and NANH could be used for biosensing of Al³⁺ in living cells.

通过基于光致电子转移（PET）和激发态分子内质子转移（ESIPT）的双重机制进行抑制，合成了一种基于萘基的新型化学传感器（NANH），对Al ³⁺离子具有良好的选择性和敏感性。合成的NANH通过各种技术如¹ H，¹³ C NMR和质谱验证。虽然在与Al ³⁺离子结合后从NANH观察到明显的荧光增强，但是其他金属离子在发射光谱中没有响应。计算出Al ³⁺的NANH的检出限和缔合常数为1.2×10 ^-7  M和4.09×10 ⁴  M ^-1通过使用荧光滴定法。乔布氏图和DFT研究证明了NANH与Al ³⁺离子的结合比（1：1）。此外，测定了各种水样中的铝，并且可以将NANH用于活细胞中Al ^3+的生物传感。