Regulating the Structure and Optical Properties of Graphitic Carbon Nitride by Tuning Edge Aromatic Functional Groups.

ABSTRACT: Graphite-phase carbon nitride (g-CN) shows significant potential for optoelectronic applications due to its low cost and high thermal stability. However, its utilization in light-emitting devices is hindered by a low photoluminescence quantum yield (PLQY) and a limited emission wavelength. This paper presents the synthesis of phenyl-, biphenyl-, and p-terphenyl-modified g-CN via direct thermal polymerization, with the aim of enhancing optical properties and elucidating underlying luminescence mechanisms. Intriguingly, the elongation of aromatic rings results in a notable red shift of their emission peaks. Specifically, the PLQY of p-terphenyl-modified g-CN reaches up to 40.2%. Matching with blue light-emitting diode (LED) chips, p-terphenyl-modified g-CN was used as a

SUBMITTER: He J 

PROVIDER: S-EPMC11923632 | biostudies-literature | 2025 Mar

REPOSITORIES: biostudies-literature