ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

Engineering conjugated porous polymers for nitroaromatic sensing

Nimisha Kaippamangalath, Arunkumar Chitteth Rajan, and Praveen C. Ramamurthy

Department of Materials Engineering, Indian Institute of Science, Bangalore, India

E-mail: nimishak.dsu@gmail.com

Received: 19 March 2023  Accepted: 20 July 2023

Abstract:

Alkylated fluorene-based conjugated porous polymers (CPPs) were developed for electrochemical detection of nitroaromatics (NAs). Poly[(1, 3, 5-tris(9,9-dihexyl-9H-fluorene-2,7-diyl) benzene)] [PPHF] and poly[(1,3,5-tris(5-(9,9-dihexyl-9H-fluorene) thiophene-2-yl)benzene)] [PPTHF], two CPPs with modified morphologies, showed improved porosity and charge transfer to NAs. PPTHF, featuring a thiophene moiety, exhibited superior sensing capabilities for 1,2-dinitrobenzene (1,2-DNB). Computational analysis confirmed strong bindings. This work introduces a novel approach for real-time safety monitoring and effective electrochemical sensing of NAs.

Graphical abstract

Keywords: Conjugated polymer; Porosity; Band gap; Interaction energy; Charge transfer; Molecular detection

Full paper is available at www.springerlink.com.

DOI: 10.1007/s11696-023-02996-w

Chemical Papers 77 (12) 7409–7419 (2023)