Synthesis, properties and fluoride sensing of hydrazide incorporated 1,8-naththalimide Troger’s bases
We report the synthesis of novel benzohydrazide incorporated naphthalimide troger’s base systems ( 1–4 ) via condensation of naphthalimide with various aryl hydrazides in high yields (86–94%). 1–4 shows strong absorption (λ max = ~ 385 nm) and emission (λ max = ~ 490 nm, ϕ f = 13–57%) in the visible region. Compound 1 found to exhibit selective fluorescent sensing of fluoride ion. The presence of hydrazine functionality in the molecular framework undergoes deprotonation via H-bonding interactions leading to significant quenching of fluorescence. The limit of detection has been calculated to be 9.05 µM. In addition, compound 1 is highly selective towards the fluoride ions among various anions such as OH − , HSO 4 − , NO 2 − , BF 4 − , CN − and OClO 4 − tested.
Authors
- Aditya Vikram Jain (ORCID: https://orcid.org/0009-0004-6145-066X)
- Thakur Gurjeet Singh (ORCID: https://orcid.org/0000-0003-2979-1590)
- Faisal Imam (ORCID: https://orcid.org/0000-0003-2285-6806)
- Aravind R. Nesaragi (ORCID: https://orcid.org/0000-0002-6659-2243)
- T. M. Sharanakumar (ORCID: https://orcid.org/0000-0002-6427-9130)
- Vinuta Kamat
- Poulami Majumder (ORCID: https://orcid.org/0000-0003-3403-8931)
- Nisha Bansal (ORCID: https://orcid.org/0009-0002-3190-0151)
- Sharanappa Chapi
- Naif Slamah Alrashedi
Institutions
- Uppsala University (SE)
- Teerthanker Mahaveer University (IN)
- B.M.S. College of Engineering (IN)
- King Saud University (SA)
- Dayananda Sagar College of Engineering (IN)
- Mahaveer University (IN)
- Ballari Institute of Technology & Management (IN)
- Graphic Era University (IN)
- Chitkara University (IN)
Publication Details
- Journal
- Scientific Reports
- Published
- 2026-11-05
- DOI
- https://doi.org/10.1038/s41598-026-75282-w
- Primary Topic
- Molecular Sensors and Ion Detection
- Type
- article
- Field-Weighted Citation Impact
- 0.00