Dual-Color Emission from Spatially Distributed Quantum Dots in Poly(l -lactide) Films with Diverse Morphologies

Lakshmi Vijaya, Sruthi Suresh, Rajkumar Patel, E. Bhoje Gowd

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

Polymer-based multicolor emissive materials have growing demand due to their potential applications in various fields such as full-color displays, bioimaging, and light sources because of their processability and high stability. Herein, we report dual-color emissive hybrid materials based on biocompatible poly(l-lactide) and polyethylene glycol-modified two-dimensional layered double hydroxide quantum dots (PEG-LDHQDs). The morphology of polymer films tunes the spatial distribution of QDs within the polymer matrix, modulating the energy transfer between the QDs and affording the dual emission behavior in the aggregated states. The amorphous hybrid films show single emission (blue) from the finely dispersed QDs (mostly isolated) within the polymer matrix. In contrast, dual emission (blue and red) was observed when the polymer was crystallized due to the possible accumulation of QDs at the interface of crystalline and amorphous phases in the lamellar structure. Furthermore, the dual emission could be enhanced by the aggregation of QDs on the pores of the breath figure pattern constructed on the surface of the hybrid film.

Original languageEnglish
Pages (from-to)1272-1277
Number of pages6
JournalACS Macro Letters
Volume11
Issue number11
DOIs
Publication statusPublished - 2022 Nov 15

Bibliographical note

Publisher Copyright:
© 2022 American Chemical Society. All rights reserved.

All Science Journal Classification (ASJC) codes

  • Organic Chemistry
  • Polymers and Plastics
  • Inorganic Chemistry
  • Materials Chemistry

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