Investigation into Red Emission and Its Applications: Solvatochromic N-Doped Red Emissive Carbon Dots with Solvent Polarity Sensing and Solid-State Fluorescent Nanocomposite Thin Films

Author:

Domena Justin B.1ORCID,Celebic Ermin1ORCID,Ferreira Braulio C. L. B.1,Zhou Yiqun1ORCID,Zhang Wei1,Chen Jiuyan1,Bartoli M.2ORCID,Tagliaferro A.2ORCID,Johnson Qiaxian3,Chauhan Bhanu P. S.3ORCID,Paulino Victor1ORCID,Olivier Jean-Hubert1,Leblanc Roger M.1

Affiliation:

1. Department of Chemistry, University of Miami, Coral Gables, FL 33146, USA

2. Department of Applied Science and Technology, Politecnico di Torino, 10129 Torino, Italy

3. Department of Chemistry, William Paterson University of New Jersey, 300 Pompton Rd, Wayne, NJ 07470, USA

Abstract

In this work, a NIR emitting dye, p-toluenesulfonate (IR-813) was explored as a model precursor to develop red emissive carbon dots (813-CD) with solvatochromic behavior with a red-shift observed with increasing solvent polarity. The 813-CDs produced had emission peaks at 610 and 698 nm, respectively, in water with blue shifts of emission as solvent polarity decreased. Subsequently, 813-CD was synthesized with increasing nitrogen content with polyethyleneimine (PEI) to elucidate the change in band gap energy. With increased nitrogen content, the CDs produced emissions as far as 776 nm. Additionally, a CD nanocomposite polyvinylpyrrolidone (PVP) film was synthesized to assess the phenomenon of solid-state fluorescence. Furthermore, the CDs were found to have electrochemical properties to be used as an additive doping agent for PVP film coatings.

Funder

National Science Foundation

Publisher

MDPI AG

Subject

Chemistry (miscellaneous),Analytical Chemistry,Organic Chemistry,Physical and Theoretical Chemistry,Molecular Medicine,Drug Discovery,Pharmaceutical Science

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