Explosive and pollutant nitroaromatic sensing through a Cd(II) based ladder shaped 1D coordination polymer

Basudeb Dutta; Sukanya Paul; Shibashis Halder

doi:10.1016/j.heliyon.2023.e13504

Explosive and pollutant nitroaromatic sensing through a Cd(II) based ladder shaped 1D coordination polymer

Heliyon. 2023 Feb 4;9(2):e13504. doi: 10.1016/j.heliyon.2023.e13504. eCollection 2023 Feb.

Authors

Basudeb Dutta¹, Sukanya Paul², Shibashis Halder³

Affiliations

¹ Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, West Bengal 741246, India.
² Department of Chemistry, Jadavpur University, Jadavpur, Kolkata 700032, India.
³ Department of Chemistry, T.N.B. College, Bhagalpur, Bihar 812007, India.

Abstract

In the existing leanings of environmental and national security issues, establishment of appropriate sensors for explosive as well as pollutant nitroaromatic compounds may be considered as one of the most prodigious job for material researchers. In the current study a new Cd(II) based 1D ladder coordination polymer (CP), [Cd(4-bpd)(3-cbn)₂]_n, has been synthesized and well characterized through single crystal X-ray diffraction analysis. Interestingly, the supramolecular assembly of this compound has efficiently identified 2,4,6-trinitrophenol through fluorescence quenching method. The Stern-Volmer coefficient (K_sv) has been calculated as 6.047 × 10³ M^-1, which can be attributed to the quenching of the emission intensity. The limit of detection (LOD) has been determined as 0.260 μM following the 3σ method along with almost 95% fluorescence intensity reduction. FESEM study revealed that the crystalline nature of the compound has been altered upon interaction with the above mentioned nitroaromatic analyte. Theoretical studies were performed to get the insight idea of fluorescence quenching mechanism which also substantiated the experimental observation. The present study can pave the way for the fabrication of future generation technology in sensor field.