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Synthesis, properties and fluoride sensing of hydrazide incorporated 1,8-naththalimide Troger’s bases

Year: 2026
Type: article
Abstract: 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.
DOI: 10.1038/s41598-026-75282-w
Authors: Aravind R. Nesaragi, Vinuta Kamat, Poulami Majumder, Sharanappa Chapi, Naif Slamah Alrashedi, T. M. Sharanakumar, Thakur Gurjeet Singh, Aditya Vikram Jain, Nisha Bansal, Faisal Imam
Institutions: Dayananda Sagar College of Engineering, Uppsala University, B.M.S. College of Engineering, King Saud University, Ballari Institute of Technology & Management, Chitkara University, Teerthanker Mahaveer University, Mahaveer University, Graphic Era University
Language: English
Subfield: Spectroscopy
Field: Chemistry
Open Access status: gold
Estimated APC paid: $2,690
OpenAlex ID: W7225324505
FWCI:
Cites: 1
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Related to: 10