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1D Zn-adenine coordination polymer for nitro explosive sensing and Hantzsch catalysis.

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Title: 1D Zn-adenine coordination polymer for nitro explosive sensing and Hantzsch catalysis.
Authors: Singh, Sneha1 (AUTHOR) sneha_2421ch15@iitp.ac.in, Patra, Rajesh1 (AUTHOR) rajesh_1921ch07@iitp.ac.in, Mondal, Sumit1 (AUTHOR) sumit_1921ch12@iitp.ac.in, Amit1 (AUTHOR) amit_2312ch32@iitp.ac.in, Sarma, Debajit1 (AUTHOR) debajit@iitp.ac.in
Source: Polyhedron. Feb2026, Vol. 284, pN.PAG-N.PAG. 1p.
Subjects: Explosives analysis, Explosives detection, Coordination polymers, Dihydropyridine, Lewis, David B., 1945-, Bifunctional catalysis, Bioactive compounds, Fluorescent polymers, Hydrothermal synthesis
Abstract: A new fluorescent coordination polymer [Zn(Ad)(1,4-NDC)(H 2 O)], SSICG-19, has been synthesized with Zn2+ nodes, adenine (Ad), and 1,4-NDC (1,4-naphthalene dicarboxylic acid) using the solvothermal method. SSICG-19 has a one-dimensional structure formed by the connectivity of adenine with a zinc ion, where 1,4-NDC remains as a pendant ligand connected to the zinc ion, along with a coordinated water molecule. SSICG-19 can selectively detect TNP (nitro explosive) based on the fluorescence turn-off mechanism. In the presence of TNP, the fluorescence intensity of the SSICG-19 is completely quenched, and it shows a low detection limit of 0.422 ppm. Additionally, the labile coordinated water molecule in SSICG-19 generates active metal sites that serve as Lewis acidic centers, which, in combination with Lewis basic sites present in the coordination polymer (-NH 2 groups of adenine), provide bifunctional catalytic activity. Therefore, SSICG-19 efficiently catalyzes the multicomponent Hantzsch condensation reaction for the one-pot synthesis of bioactive dihydropyridines (DHPs) under mild conditions. A fluorescent Zn-based coordination polymer SSICG-19 , constructed from adenine, 1,4-naphthalene dicarboxylic acid exhibits selective sensing of nitro explosives and efficient one-pot Hantzsch condensation for the synthesis of dihydropyridines (DHPs). [Display omitted] [ABSTRACT FROM AUTHOR]
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Database: Engineering Source
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Abstract:A new fluorescent coordination polymer [Zn(Ad)(1,4-NDC)(H 2 O)], SSICG-19, has been synthesized with Zn2+ nodes, adenine (Ad), and 1,4-NDC (1,4-naphthalene dicarboxylic acid) using the solvothermal method. SSICG-19 has a one-dimensional structure formed by the connectivity of adenine with a zinc ion, where 1,4-NDC remains as a pendant ligand connected to the zinc ion, along with a coordinated water molecule. SSICG-19 can selectively detect TNP (nitro explosive) based on the fluorescence turn-off mechanism. In the presence of TNP, the fluorescence intensity of the SSICG-19 is completely quenched, and it shows a low detection limit of 0.422 ppm. Additionally, the labile coordinated water molecule in SSICG-19 generates active metal sites that serve as Lewis acidic centers, which, in combination with Lewis basic sites present in the coordination polymer (-NH 2 groups of adenine), provide bifunctional catalytic activity. Therefore, SSICG-19 efficiently catalyzes the multicomponent Hantzsch condensation reaction for the one-pot synthesis of bioactive dihydropyridines (DHPs) under mild conditions. A fluorescent Zn-based coordination polymer SSICG-19 , constructed from adenine, 1,4-naphthalene dicarboxylic acid exhibits selective sensing of nitro explosives and efficient one-pot Hantzsch condensation for the synthesis of dihydropyridines (DHPs). [Display omitted] [ABSTRACT FROM AUTHOR]
ISSN:02775387
DOI:10.1016/j.poly.2025.117897