Dresden 2026 – scientific programme
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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 17: Poster I
CPP 17.47: Poster
Monday, March 9, 2026, 19:00–21:00, P5
Large-Area Semiconducting 2D Imine-COF Polymer Films on Dielectric Glass for Electronic Applications — •Diksha Srivastava1, Vipin Mishra2, Showkat H. Mir3, Jyotirban Dey1, Jayant k. Singh1, Manabendra Chandra1, and Thiruvancheril g. Gopakumar1 — 1Indian Institute of Technology Kanpur, Kanpur 208016, India — 2Vellore Institute of Technology, Vellore, Tamil Nadu 632014, India — 3University of Kashmir, Hazratbal, Srinagar 190006, Jammu and Kashmir, India
Two-dimensional imine-based covalent organic frameworks (2D COFs) are a growing class of crystalline π-conjugated organic polymers with strong potential in thin-film electronics and optoelectronics. We present a scalable and reproducible strategy for producing 2D imine-COF-based polymer thin films through a quasi-equilibrium Schiff-base reaction between p-phenylenediamine (PDA) and benzene-1,3,5-tricarboxaldehyde (TCA). This method enables the growth of large-area polymer films (up to 2 cm) on dielectric substrates with controlled thickness. SEM, TEM, and AFM confirmed the layered and crystalline morphology of the films. Optical absorption and scattering measurements revealed a semiconducting band gap consistent with the DFT-calculated band structures, indicating the presence of delocalized states suitable for charge transport. To probe intrinsic electrical behaviour, COF polymer films were integrated into Ag/COF/Glass devices. The I-V curves revealed semiconducting behaviour with low current density and field-assisted conduction limited by electrode-COF injection barriers.
Keywords: 2D covalent organic frameworks; semiconductor; organic electronics; electronic structure; thin film