Nanocomposites of nitrogen-doped carbon dots/hydrotalcite with enhanced solid-state fluorescence for the recognition of latent fingerprints

Li, Dawu; Zhang, Xingfu; Zhang, Xiaolin; lv, Xiao-Sen; You, Nan

doi:10.1039/d2ay01952c

Cited by 4 publications

(4 citation statements)

References 37 publications

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“…The characteristic bands at 238 nm and 263 nm are due to the π-π* transition of the aromatic sp2 in the RhB (Li et al, 2023a). The characteristic band at 365 nm is attributed to the trapping of excited state energy by the surface states (Li et al, 2023b). A band at 409 nm can be attributed to the n-π* transition of C = O and C = N bonds in RhB molecular (Rai et al, 2017).…”

Section: Optical Performancesmentioning

confidence: 96%

“…Complicated and time-consuming operations, relatively-low yield, and uorescence quenching in the solid-state of carbon dots result in an unsatisfactory practical use (Zhu et al, 2013). Recently, the problem of uorescence quenching in the solid-state can be solved by the design of carbon dots-based nanocomposites (Li et al, 2023b). However, high cost and/or overcomplicated process remain a non-negligible issue (Yuan et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

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Visualization of Latent Fingerprints Based on Composites of Dye-Doped Cellulose with Red Emissive Fluorescence

Zou¹,

Liu³

et al. 2023

Preprint

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Novel cellulose-based composites by integrating the rhodamine B (RhB) with cellulose microparticles are developed and used to detect latent fingerprints (LFPs). The cellulose-based composites containing the various amounts of RhB (5.4 ± 0.2, 9.7 ± 0.3, and 19.6 ± 0.3 mg g− 1) with the good photostability are obtained by simple adsorption method. Under 365 nm light irradiation, cellulose-based composite can produce the bright red fluorescence in solid-state. The images of the LFPs on the surface of the substrates with variable textures and colors are detected with integral ridge patterns and finely clear detail characteristics in level 2 and 3. The fresh and aging LFPs can be finely detected by the cellulose-based composite with the little interference of background because the red-emissive can efficiently avoid the interference from self-fluorescence of the substrates. These results suggest that the cellulose-based composite with favorable applicability and dependability can be a promising candidate for the visualization of the LFPs.

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Section: Optical Performancesmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

Visualization of Latent Fingerprints Based on Composites of Dye-Doped Cellulose with Red Emissive Fluorescence

Zou¹,

Liu³

et al. 2023

Preprint

Self Cite

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“…Their ACQ can be mitigated by confining them in mesoporous material to prevent their conjugated domains from directly contacting. [ 121–127 ] In 2019, Hu et al. [ 124 ] developed a strategy to assemble N‐doped CDs (NCDs) inside the channels of SBA‐15 to promote SSF.…”

Section: Construction Strategy For Solid‐state Fluorescence Of Carbon...mentioning

confidence: 99%

“…Their ACQ can be mitigated by confining them in mesoporous material to prevent their conjugated domains from directly contacting. [121][122][123][124][125][126][127] In 2019, Hu et al [124] developed a strategy to assemble N-doped CDs (NCDs) inside the channels of SBA-15 to promote SSF. Capillary action drove the NCDs to self-assemble into the mesoporous channels of SBA-15 to form NCDs-in-SBA-15 composites.…”

Section: Porous-material-assisted Support Of Carbon Dots For Solid-st...mentioning

confidence: 99%

Innovations in the Solid‐State Fluorescence of Carbon Dots: Strategies, Optical Manipulations, and Applications

Wang

Song

et al. 2023

Adv Funct Materials

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Carbon dots (CDs)—carbon nanoparticles smaller than 10 nm—have attracted widespread attention owing to their excellent optical properties. However, high‐performing CDs often suffer from severe aggregation‐induced quenching in the solid state, which limits their commercial applicability. Therefore, CD materials with efficient solid‐state luminescence are sought. As research on the structure and photoluminescence mechanisms of CDs has intensified in recent years, strategies to construct fluorescent solid‐state CD materials and tune their emissions have broadened. This article reviews recent advances in the strategies and mechanisms for attaining solid‐state fluorescence in CDs, describes specific ways to tune the optical properties of this fluorescence, introduces the latest applications of the resulting CDs to optoelectronics, biology, and sensing, and finally considers the prospects for future application and current challenges facing the development of solid‐state fluorescence in CDs.

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Visualization of latent fingerprints based on composites of dye-doped cellulose with red emissive fluorescence

Li,

Liu

et al. 2023

Cellulose

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Nanocomposites of nitrogen-doped carbon dots/hydrotalcite with enhanced solid-state fluorescence for the recognition of latent fingerprints

Abstract: Herein, green emissive nanocomposite has been synthesized by embedding the nitrogen-doped carbon dots into hydrotalcite (N-CD/hydrotalcite) via hydrothermal process for the recognition of latent fingerprints (LFPs). The good dispersion of...

Cited by 4 publications

References 37 publications

Visualization of Latent Fingerprints Based on Composites of Dye-Doped Cellulose with Red Emissive Fluorescence

Visualization of Latent Fingerprints Based on Composites of Dye-Doped Cellulose with Red Emissive Fluorescence

Innovations in the Solid‐State Fluorescence of Carbon Dots: Strategies, Optical Manipulations, and Applications

Visualization of latent fingerprints based on composites of dye-doped cellulose with red emissive fluorescence

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