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<p>Terpyridine-based compounds have attracted considerable attention due to their remarkable luminescent properties. d- and f-block element complexes dominate the coordination chemistry of terpyridine due to the strong chelating effect resulting from the three nitrogen atoms and their strong metal-ligand coordinative tendency. These complexes exhibit different affinities for various ions and molecules, which depend upon the nature of the terpyridine ligands and the metal center. A variety of analytical instruments and techniques, including absorption and fluorescence spectroscopy, are employed to detect substances. For example, terpyridine-based fluorescent probes exhibit enhanced emission, fluorescence quenching, shifts in emission wavelength, or the appearance of new emission bands. Interestingly, design strategies for colorimetric detection, especially naked-eye recognition, are of particular interest. These terpyridine-based platforms include supramolecular networks, nanostructures, polymers, metal–organic frameworks (MOFs), and metal–organic layers (MOLs). There are several processes for ion or molecular recognition in terpyridine sensors, such as photoinduced energy transfer (PET), chelation-enhanced fluorescence, intramolecular charge transfer (ICT), aggregation-induced emission (AIE), and charge transfer (LMCT and MLCT). This review provides a comprehensive overview of the role of terpyridine-based probes in detecting a wide range of ions and molecules, given the long-standing importance of ion detection in environmental and biological sensing. Accordingly, terpyridine-based receptors have been extensively investigated due to their remarkable versatility and vast potential for modifications. Specifically, functionalization at the 4′-position modifies terpyridine’s electronic and coordinative properties, thereby enhancing or reducing specific properties, such as luminescence intensity. While several review papers have been published on terpyridine derivatives and their applications, there is a distinct lack of literature on their chemosensing capabilities. The key challenges in the sensing application of terpyridine compounds in biological systems are discussed, with examples highlighted to inform the design of new compounds for cancer markers. This work will offer detailed and valuable insights into these sensors and their application, encouraging further research in this promising field.</p>

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Progress in the Design and Applications of Terpyridine-Based Sensors

  • 期刊论文

  • 发表日期：

    2026年6月28日

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  • Badri Z. Momeni,
  • Navid Ranjbar,
  • Sana Sahami,
  • Rasa Daneshnia

摘要

Terpyridine-based compounds have attracted considerable attention due to their remarkable luminescent properties. d- and f-block element complexes dominate the coordination chemistry of terpyridine due to the strong chelating effect resulting from the three nitrogen atoms and their strong metal-ligand coordinative tendency. These complexes exhibit different affinities for various ions and molecules, which depend upon the nature of the terpyridine ligands and the metal center. A variety of analytical instruments and techniques, including absorption and fluorescence spectroscopy, are employed to detect substances. For example, terpyridine-based fluorescent probes exhibit enhanced emission, fluorescence quenching, shifts in emission wavelength, or the appearance of new emission bands. Interestingly, design strategies for colorimetric detection, especially naked-eye recognition, are of particular interest. These terpyridine-based platforms include supramolecular networks, nanostructures, polymers, metal–organic frameworks (MOFs), and metal–organic layers (MOLs). There are several processes for ion or molecular recognition in terpyridine sensors, such as photoinduced energy transfer (PET), chelation-enhanced fluorescence, intramolecular charge transfer (ICT), aggregation-induced emission (AIE), and charge transfer (LMCT and MLCT). This review provides a comprehensive overview of the role of terpyridine-based probes in detecting a wide range of ions and molecules, given the long-standing importance of ion detection in environmental and biological sensing. Accordingly, terpyridine-based receptors have been extensively investigated due to their remarkable versatility and vast potential for modifications. Specifically, functionalization at the 4′-position modifies terpyridine’s electronic and coordinative properties, thereby enhancing or reducing specific properties, such as luminescence intensity. While several review papers have been published on terpyridine derivatives and their applications, there is a distinct lack of literature on their chemosensing capabilities. The key challenges in the sensing application of terpyridine compounds in biological systems are discussed, with examples highlighted to inform the design of new compounds for cancer markers. This work will offer detailed and valuable insights into these sensors and their application, encouraging further research in this promising field.