A5052823796- Carbon and Quantum Dots Applications
- Nanoplatforms for cancer theranostics
- Luminescence and Fluorescent Materials
- Nanocluster Synthesis and Applications
- Advanced biosensing and bioanalysis techniques
- Advanced Nanomaterials in Catalysis
- Graphene and Nanomaterials Applications
- Photodynamic Therapy Research Studies
- Quantum Dots Synthesis And Properties
- Photoacoustic and Ultrasonic Imaging
- Advanced Biosensing Techniques and Applications
- Nanoparticle-Based Drug Delivery
- Advanced Photocatalysis Techniques
- Photonic Crystals and Applications
- Organic Light-Emitting Diodes Research
- Traumatic Brain Injury and Neurovascular Disturbances
- Graphene research and applications
- Optical Imaging and Spectroscopy Techniques
- Biosensors and Analytical Detection
- Conducting polymers and applications
- Cerebrospinal fluid and hydrocephalus
- Bladder and Urothelial Cancer Treatments
- Advanced Fluorescence Microscopy Techniques
- Gold and Silver Nanoparticles Synthesis and Applications
- Lanthanide and Transition Metal Complexes
Jilin University
2016-2025
Jilin Medical University
2014-2025
State Key Laboratory of Supramolecular Structure and Materials
2016-2025
First Hospital of Jilin University
2019-2025
Theranostics (New Zealand)
2024-2025
Institute of Soil and Water Conservation
2024
Anhui University of Science and Technology
2024
Stanford University
2015-2021
National Institute of Biomedical Imaging and Bioengineering
2017-2020
National Institutes of Health
2017-2020
Shine on you crazy dots: A rapid and high-output strategy allows the fabrication of polymer-like carbon dots (CDs) with quantum yields as high ca. 80 %. This value is highest reported to date for fluorescent carbon-based materials, gives promise their application in multicolor-patterning biosensors. As a service our authors readers, this journal provides supporting information supplied by authors. Such materials are peer reviewed may be re-organized online delivery, but not copy-edited or...
Strongly fluorescent graphene quantum dots (GQDs) have been prepared by one-step solvothermal method with PL yield as high 11.4%. The GQDs stability and can be dissolved in most polar solvents. Because of fine biocompatibility low toxicity, are demonstrated to excellent bioimaging agents.
Abstract The bandgap in graphene‐based materials can be tuned from 0 eV to that of benzene by changing size and/or surface chemistry, making it a rising carbon‐based fluorescent material. Here, the chemistry small graphene (graphene quantum dots, GQDs) is programmably through modification or reduction and green luminescent GQDs are changed blue GQDs. Several tools employed characterize composition morphology resultants. More importantly, using this system, luminescence mechanism (the...
Farbenspiele: Polymerartige Kohlenstoffpunkte (CDs) können schnell und in großen Mengen hergestellt werden. Mit ca. 80 % erzielen die CDs bisher höchsten Quantenausbeuten für fluoreszierende Kohlenstoffmaterialien, woraus sich Anwendungsmöglichkeiten Vielfarben-Musterbildung Biosensoren ergeben könnten. As a service to our authors and readers, this journal provides supporting information supplied by the authors. Such materials are peer reviewed may be re-organized for online delivery, but...
Near-infrared-emissive polymer-carbon nanodots (PCNDs) are fabricated by a newly developed facile, high-output strategy. The PCNDs emit at wavelength of 710 nm with quantum yield 26.28%, which is promising for deep biological imaging and luminescent devices. Moreover, the possess two-photon fluorescence; in vivo bioimaging red-light-emitting diodes based on these demonstrated.
Carbon nanodots (C-dots) synthesized by electrochemical ablation and small molecule carbonization, as well graphene quantum dots (GQDs) fabricated solvothermally cutting oxide, are three kinds of typical green fluorescence carbon nanomaterials. Insight into the photoluminescence origin in these fluorescent nanomaterials is one important matters current debates. Here, a common luminescence C-dots GQDs unraveled ultrafast spectroscopy. According to change surface functional groups during...
We clarified the chemical structure of typical “bottom-up” CDs and proved that IPCA is molecular state photoluminescence center.
Abstract Fluorescence imaging in the second near-infrared window (NIR-II) allows visualization of deep anatomical features with an unprecedented degree clarity. NIR-II fluorophores draw from a broad spectrum materials spanning semiconducting nanomaterials to organic molecular dyes, yet unfortunately all water-soluble molecules >1,000 nm emission suffer low quantum yields that have limited temporal resolution and penetration depth. Here, we report tailoring supramolecular assemblies...
Abstract Polymer carbon dots (PCDs) are proposed as a new class of room‐temperature phosphorescence (RTP) materials. The abundant energy levels in PCDs increase the probability intersystem crossing (ISC) and their covalently crosslinked framework structures greatly suppress nonradiative transitions. efficient methods allow manufacture with unique RTP properties air without additional metal complexation or complicated matrix composition. They thus provide route towards rational design...
Abstract In vivo fluorescence imaging in the near-infrared region between 1500–1700 nm (NIR-IIb window) affords high spatial resolution, deep-tissue penetration, and diminished auto-fluorescence due to suppressed scattering of long-wavelength photons large fluorophore Stokes shifts. However, very few NIR-IIb fluorescent probes exist currently. Here, we report synthesis a down-conversion luminescent rare-earth nanocrystal with cerium doping (Er/Ce co-doped NaYbF 4 core an inert NaYF shell)....
Organic fluorophores have been widely used for biological imaging in the visible and first near-infrared windows. However, their application second window (NIR-II, 1000–1700 nm) is still limited mainly due to low fluorescence quantum yields (QYs). Here, we explore molecular engineering on donor unit develop high performance NIR-II fluorophores. The are constructed by a shielding unit–donor(s)–acceptor–donor(s)–shielding structure. Thiophene introduced as connected unit, which can increase...
Abstract A new type of fluorescent material is presented, which called non‐conjugated polymer dots (NCPDs). The NCPDs only possess sub‐fluorophores (which are groups such as CO, CN, NO) instead typical conjugated fluorophore groups, and thus these materials should not have strong photoluminescence (PL) in the usual sense. Nevertheless, PL can be enhanced by chemical crosslinking or physical immobilization chains, named crosslink‐enhanced emission (CEE) effect. significant advances...
A new design for second near-infrared window (NIR-II) molecular fluorophores based on a shielding unit-donor-acceptor-donor-shielding unit (S-D-A-D-S) structure is reported. With 3,4-ethylenedioxy thiophene as the donor and fluorene unit, best performance IR-FE IR-FEP exhibit an emission quantum yield of 31% in toluene 2.0% water, respectively, representing brightest organic dyes NIR-II region reported so far.
Carbon dots (CDs) are novel fluorescent materials with low toxicity and good biocompatibility. Herein, the collisional/dynamic photoluminescence (PL) center destruction quenching behaviors of a type CDs were investigated. Moreover, exploited in applications. Firstly, dynamic PL was achieved by Fe3+ ions, which proved Stern–Volmer equation, temperature dependent fluorescence lifetime measurements. Furthermore, hemin sensor based on Fe3+/CDs system achieved. Secondly, induced caused hydroxyl...
Fluorescent graphene-based materials, labelled as a sort of fluorescent carbon-based nanomaterial, have drawn increasing attention in recent years. When the size and structure graphene were controlled properly, photoluminescence was induced graphene, resulting so-called (FG). FG has size-, defect-, wavelength-dependent luminescence emission, which is similar to traditional semiconductor-based quantum dots. Moreover, with excellent chemical stability, fine biocompatibility, low toxicity,...
Abstract Fluorescence imaging of biological systems in the second near-infrared (NIR-II, 1000–1700 nm) window has shown promise high spatial resolution, low background, and deep tissue penetration owing to autofluorescence suppressed scattering long wavelength photons. Here we develop a bright organic nanofluorophore (named p-FE) for high-performance NIR-II window. The >1100 nm fluorescence emission from p-FE affords non-invasive vivo tracking blood flow mouse brain vessels. Excitingly,...
Abstract Development of high‐performance carbon dots (CDs) with emission wavelength longer than 660 nm (deep red emission) is critical in deep‐tissue bioimaging, yet it still a major challenge to obtain CDs both narrow full width at half maximum (FWHM) and high deep red/near‐infrared yield. Here, emissive carbonized polymer (CPDs) unprecedented FWHM 20 are synthesized. The purified CPDs dimethyl sulfoxide (DMSO) solution possess quantum yield (QY) as 59% under 413 excitation, well recorded...
In this article, graphene quantum dots (GQDs) with tunable surface chemistry (increasing oxidation degree) were prepared by an efficient two-step method. The GQDs have fluorescence induced the degree of oxidation, fine solubility, high stability and applicable up-conversion photoluminescence (PL). PL mechanism was investigated based on structure behaviors. More importantly, acid–base response property can be applied as pH sensors.
Nanosized fluorescent carbon particles, namely, dots (CDs), are a kind of material that has drawn increasing attention in recent years. CDs have size-, surface chemistry-, and wavelength-dependent luminescence emission, which is different from traditional semiconductor-based quantum dots. Moreover, with excellent chemical stability, good biocompatibility, low toxicity, up-conversion resistance to photo bleaching, as well easy modifications, promising for substantial applications numerous...