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  • Facile Synthesis of Water-Stable Multicolor Carbonized Polymer Dots from a Single Unconjugated Glucose for Engineering White Light-Emitting Diodes with a High Color Rendering Index

    Author(s)
    Zhao, Yingnan
    Ou, Cailing
    Yu, Jingkun
    Zhang, Yongqiang
    Song, Haoqiang
    Zhai, Yunpu
    Tang, Zhiyong
    Lu, Siyu
    Griffith University Author(s)
    Tang, Zhiyong
    Year published
    2021
    Metadata
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    Abstract
    Tunable emission carbonized polymer dots (CPDs) are highly desirable for the preparation of optoelectronic devices, especially white light-emitting diodes (WLEDs). In most available studies, polychromatic CPDs are synthesized using aromatic molecules as precursors. However, few studies report the successful synthesis of polychromatic CPDs using two or more unconjugated precursors. In this work, we prepare multicolor fluorescent CPDs from a single unconjugated precursor, glucose, via a hydrothermal reaction. By controlling the particle size and degree of graphitization of the synthesized CPDs, their emission wavelength can ...
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    Tunable emission carbonized polymer dots (CPDs) are highly desirable for the preparation of optoelectronic devices, especially white light-emitting diodes (WLEDs). In most available studies, polychromatic CPDs are synthesized using aromatic molecules as precursors. However, few studies report the successful synthesis of polychromatic CPDs using two or more unconjugated precursors. In this work, we prepare multicolor fluorescent CPDs from a single unconjugated precursor, glucose, via a hydrothermal reaction. By controlling the particle size and degree of graphitization of the synthesized CPDs, their emission wavelength can be tuned in the range 440-625 nm (i.e., almost the entire visible region). Furthermore, the CPDs can be used to construct LEDs of varying colors, including WLEDs (CIE coordinates: 0.34, 0.36) with the correlated color temperature and color rendering index of 4997 K and 92.69, respectively. In brief, the strategy proposed in this study successfully converts unconjugated glucose into high-performance LEDs with great application potential.
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    Journal Title
    ACS Applied Materials & Interfaces
    Volume
    13
    Issue
    25
    DOI
    https://doi.org/10.1021/acsami.1c07444
    Subject
    Chemical sciences
    Engineering
    LEDs
    carbonized polymer dots
    high color rendering index
    multicolor
    unconjugated precursor
    Publication URI
    http://hdl.handle.net/10072/405871
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    • Journal articles

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