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July 26, 2026Journal of Applied Physics

Micro-photoluminescence mapping of photonic heterogeneity in cellulose nanocrystal films

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Authors

OAOmar AljohaniSCStephen ChurchADAhu Gümrah Dumanlı

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Overview

Randomized trial examines photonic properties linked to microscale structures in cellulose nanocrystal films, suggesting new insights for photonic material applications.

Key Points

  • This study investigates how the microscale domain structure of cellulose nanocrystal films influences local photoluminescence characteristics.
  • Incorporated Rhodamine 6G into cellulose nanocrystal films for analysis.
  • Used micro-photoluminescence mapping to assess the relationship with photonic bandgap effects.
  • Compared films cast under controlled humidity and ambient conditions.
  • Larger domains in humidity-controlled films show lower photoluminescence intensity due to redshift and dye aggregation.
  • Smaller domain films at room temperature exhibit higher emission intensity, particularly at low dye concentration (0.05 wt. %).
  • Spectral overlap analysis reveals emission intensity driven more by reflection-emission proximity than by dye concentration.

Cite This Study

Aljohani et al. (2026) studied this question.

synapsesocial.com/papers/6a65a3a3d3aea3239cd76b12https://doi.org/10.1063/5.0331027
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Also Consider

Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context:

  1. 1Confinement-Activated Fluorescence Enhancement of Dyes via Polymer-Mediated Interfacial Regulation in Cellulose Nanocrystal Films2026
  2. 2Beyond cellulose nanocrystals: photonic films fabricated from lyotropic liquid crystals2024
  3. 3Stress-assisted clustering-triggered emission of cellulose- based materials2024
  4. 4Near‐White Circularly Polarized Luminescence by Color Mixing Utilizing Surface‐Fluorophore‐Modified Cellulose Nanocrystals in Composite Films2026
  5. 5Breakthrough in Luminescence Thermometry─Supersensitive Emission Line Shift of Whispering Gallery Modes in Rhodamine B-Doped Cellulose Fiber Microresonators2025