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
Justin B. Domena,
Ermin Celebic,
Braulio C. L. B. Ferreira,
Yiqun Zhou,
Wei Zhang,
Jiuyan Chen,
M. Bartoli,
A. Tagliaferro,
Qiaxian Johnson,
Bhanu P. S. Chauhan,
Victor Paulino,
Jean-Hubert Olivier,
Roger M. Leblanc
Affiliations
Justin B. Domena
Department of Chemistry, University of Miami, Coral Gables, FL 33146, USA
Ermin Celebic
Department of Chemistry, University of Miami, Coral Gables, FL 33146, USA
Braulio C. L. B. Ferreira
Department of Chemistry, University of Miami, Coral Gables, FL 33146, USA
Yiqun Zhou
Department of Chemistry, University of Miami, Coral Gables, FL 33146, USA
Wei Zhang
Department of Chemistry, University of Miami, Coral Gables, FL 33146, USA
Jiuyan Chen
Department of Chemistry, University of Miami, Coral Gables, FL 33146, USA
M. Bartoli
Department of Applied Science and Technology, Politecnico di Torino, 10129 Torino, Italy
A. Tagliaferro
Department of Applied Science and Technology, Politecnico di Torino, 10129 Torino, Italy
Qiaxian Johnson
Department of Chemistry, William Paterson University of New Jersey, 300 Pompton Rd, Wayne, NJ 07470, USA
Bhanu P. S. Chauhan
Department of Chemistry, William Paterson University of New Jersey, 300 Pompton Rd, Wayne, NJ 07470, USA
Victor Paulino
Department of Chemistry, University of Miami, Coral Gables, FL 33146, USA
Jean-Hubert Olivier
Department of Chemistry, University of Miami, Coral Gables, FL 33146, USA
Roger M. Leblanc
Department of Chemistry, University of Miami, Coral Gables, FL 33146, USA
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.
