Affiliations: [a] Department of Chemistry, Chandigarh University, Mohali, India
| [b] Department of Applied Science (Chemistry), Madan Mohan Malaviya University of Technology, Gorakhpur, India
| [c] Department of Chemistry, Manipal University Jaipur, Jaipur, India
| [d] Chemical and Biological Integrative Research Center, Korean Institute of Science and Technology, Seoul, South Korea
| [e] Department of Chemistry, Deen Dayal Upadhyaya Gorakhpur University, Gorakhpur, India
Correspondence:
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Corresponding author: Atul Partap Singh, Department of Chemistry, Chandigarh University, Mohali, Punjab, India. E-mail: atulpartap.chemistry@cumail.in; ORCID: https://orcid.org/0000-0002-0078-9449?lang=en
Abstract: The generation of a low HOMO-LUMO energy gap makes organic polymer-based composites an important class of materials with outstanding catalytic efficiency. The present work describes the simple and direct synthesis of an excellent photocatalyst, PC (C26H16NO7S)n via doping of erythrosine-B dye on sulfone infused poly(2-amino thiophenol) assembly (PA, (C6H4NO2S)n). The O 1 s spectrum displays peaks at 531.8 eV and 533.3 eV, representing the O=C and O–C groups of the in-situ generated fluorescein loaded on PA surface. Through absorption study (Tauc’s plot), the optical band gap (Eg) for polymer PA (2.9 eV) and photocatalyst PC (2.1 eV) has been calculated. Further, due to the efficient absorbance in the range of 400–600 nm with a low optical band gap, the applicability of the catalyst, PC has been checked in photocatalytic C–H activation in thiophene, and the generation of C–C bond with p-nitro aryldiazonium salt.
