Fluorescent Carbonized Polymer Dots Derived from o-phenylenediamine and its Photonic Application

Title

Fluorescent Carbonized Polymer Dots Derived from o-phenylenediamine and its Photonic Application

Creator

Abraham J.E.; Kumbhakar P.; Balachandran M.

Description

Optimizing the optoelectronic characteristics of low-dimensional carbon dots (CDs) through surface modifications and doping has proven instrumental in tailoring them for diverse applications. This study explores a facile and economical hydrothermal synthesis method for generating Carbonized Polymer Dots using o-phenylenediamine at different temperatures. The resulting materials exhibit structural and morphological variations linked to the synthesis temperature. A transition from carbon dots (CDs) embedded in reduced graphene oxide (rGO)-like sheet structures at low temperatures to the core-shell structure at the highest temperature is observed in HR-TEM, implying the formation of CPDs. X-ray photoelectron spectroscopy (XPS) corroborates these findings, showing an augmented degree of graphitization in alignment with HR-TEM results. The photoluminescence spectra of CPDs synthesized at the lowest temperature exhibit multiple emission peaks, resulting in a yellowish-orange color. Utilizing these CPDs to fabricate light-emitting diodes (LEDs) produces a vivid bright-green emission with CIE coordinates (0.378, 0.522). Moreover, the CPDs demonstrate solvatochromism across diverse solvents of varying polarity, covering the entire visible spectrum. This intriguing solvatochromic effect positions the CPDs as promising materials for polarity probing applications. The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature 2024.

Source

Journal of Fluorescence

Date

2024-01-01

Publisher

Springer

Subject

Carbonized polymer dots; Fluorescence; Multi-emission; Solvatochromic effect

Coverage

Abraham J.E., Department of Physics and Electronics, CHRIST (Deemed to be University), Karnataka, Bengaluru, 560029, India; Kumbhakar P., Department of Physics and Electronics, CHRIST (Deemed to be University), Karnataka, Bengaluru, 560029, India; Balachandran M., Department of Physics and Electronics, CHRIST (Deemed to be University), Karnataka, Bengaluru, 560029, India

Rights

Restricted Access

Relation

ISSN: 10530509; CODEN: JOFLE

Format

Online

Language

English

Type

Article

Identifier

https://doi.org/10.1007/s10895-024-03652-6

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85187644585&doi=10.1007%2fs10895-024-03652-6&partnerID=40&md5=a3e42960f1b753ca7a51367347b61641