ArticleAdvanced science (Weinheim, Baden-Wurttemberg, Germany)2023
Activating One/Two-Photon Excited Red Fluorescence on Carbon Dots: Emerging n→π Photon Transition Induced by Amino Protonation.
Article in Advanced science (Weinheim, Baden-Wurttemberg, Germany), 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
What it found
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The trial behind it
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Who cites it
8 citing papers in PubMed.
- Carbon dots from contaminatedRSC advances · 2026Article
- Simultaneous Monitoring of Tyrosinase and ATP in Thick Brain Tissues Using a Single Two-Photon Fluorescent Probe.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2025Article
- Elucidating Manganese Single-Atom Doping: Strategies for Fluorescence Enhancement in Water-Soluble Red-Emitting Carbon Dots and Applications for FL/MR Dual Mode Imaging.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2025Article
- Research on Red/Near-Infrared Fluorescent Carbon Dots Based on Different Carbon Sources and Solvents: Fluorescence Mechanism and Biological Applications.Nanomaterials (Basel, Switzerland) · 2025Review
- Antimicrobial drug-derived carbon quantum dots for photodynamic therapy of bedsores and bacterial infections.American journal of translational research · 2025Article
- Intermediate aminophenol enables hectogram-scale synthesis of highly bright red carbon quantum dots under ambient conditions.Chemical science · 2024Article
- Construction of composite films using carbon nanodots for blocking ultraviolet light from the Sun.RSC advances · 2023Article
- Activating One/Two-Photon Excited Red Fluorescence on Carbon Dots: Emerging n→π Photon Transition Induced by Amino Protonation.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2023Article
Corrections and comments
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Authors and funding
7 authors.
Funding
Abstract
Due to the complicated nature of carbon dots (CDs), fluorescence mechanism of red fluorescent CDs is still unrevealed and features highly controversial. Reliable and effective strategies for manipulating the red fluorescence of CDs are urgently needed. Herein, CDs with one-photon excited (622 nm, QYs ≈ 17%) and two-photon (629 nm) excited red fluorescence are prepared by acidifying o-phenylenediamine-based reaction sediments. Systematic analysis reveals that the protonation of amino groups increases the particle surface potential, disperse the bulk sediments into nano-scale CDs. In the meanwhile, amino protonation of pyridinic nitrogen (-N=) structure inserts numerous n orbital energy levels between the π → π* transition, narrows the gap distance for photon transition, and induces red fluorescence emission on CDs. Present research reveals an effective pathway to activate CDs reaction sediments and trigger red emission, thus may open a new avenue for developing CDs with ideal optical properties and promising application prospects.
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Registered trials
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