Recent advancements of solid-state emissive carbon dots: A review

Coordination Chemistry Reviews, Journal Year: 2023, Volume and Issue: 498, P. 215469 - 215469

Published: Sept. 29, 2023

Language: Английский

---

Advances in Shell and Core Engineering of Carbonized Polymer Dots for Enhanced Applications

Accounts of Chemical Research, Journal Year: 2024, Volume and Issue: 57(19), P. 2928 - 2939

Published: Sept. 19, 2024

ConspectusCarbon dots (CDs), as a novel type of fluorescent nanocarbon material, attract widespread attention in nanomedicine, optoelectronic devices, and energy conversion/storage due to their excellent optical properties, low toxicity, high stability. They can be classified graphene quantum dots, carbon carbonized polymer (CPDs). Among these, CPDs exhibit tunable structures components that allow fine-tuning making them one the most popular types CDs recent years. However, structural complexity stimulates deep exploration relationship between unique structure luminescent performance. As an organic-inorganic hybrid system, diversity self-limited state cores polymer-hybrid shell layers makes understanding underlying mechanisms structure-property relationships very challenging task. In this context, elucidating composition factors affect properties is vital if enormous potential realized. Achieving controllable with predefined via adoption specific functionalization strategies prized goal current researchers field.In Account, we describe efforts made by our group synthesis, mechanism analysis, regulation, functional applications CPDs, particular emphasis on design core-shell tailored for fields optoelectronics energy. Specifically, through rational selection precursors, optimization reaction conditions, postmodification have demonstrated it possible regulate both core layers, thereby achieving full-spectrum emission, yield, persistent luminescence, thermally activated delayed fluorescence, laser action CPDs. Furthermore, established structure-performance proposed universal strategy synergistic interactions carbon-based surface micronanostructures. addition, unveiled luminescence cross-linked specifically "cross-linking synergistically inducing quantum-state luminescence", which addresses challenge efficient circularly polarized liquid solid phases Subsequently, strong cross-linking, dual-rigidity, ordering preparation methods were introduced, pioneering emission from blue near-infrared wavelengths. Additionally, developed new "confined composite nanocrystals CPDs", leading various high-performance hydrogen evolution catalysts water electrolysis. The not only possessed but also enabled efficiencies field conversion, thus maximizing utilization Finally, discuss important trends CPD research development. Overall, Account summarizes latest advancements years, providing case-studies enable structure-property-performance regulation guiding future expansion application

Language: Английский

---

Matrix-Free Thermally Activated Delayed Fluorescent Carbon Dots-Based Electroluminescent Light-Emitting Diodes Exceeding 5.6% External Quantum Efficiency

Nano Letters, Journal Year: 2024, Volume and Issue: 24(9), P. 2904 - 2911

Published: Feb. 22, 2024

Carbon dots (CDs) are promising luminescent emission layer materials for next generation electroluminescent light emitting diodes (EL-LEDs) due to their many advantages, such as environmental friendliness, low cost, and high stability. However, limited by the spin-forbidden properties of triplet transition, it is difficult improve external quantum efficiency (EQE) fluorescent CDs-based EL-LEDs. Meanwhile, traditional thermally activated delayed (TADF) CDs prepared using coating strategies utilize in EL-LEDs nonconductivity agent. Herein, we successfully developed matrix-free TADF with yellow achieved a device EQE 5.68%, which highest value reported In addition, also white an 1.70%. This study highlights importance interactions between precursors modulating electroluminescence emitters provides effective design principle CDs.

Language: Английский

---

A rapid room-temperature self-healing, antibacterial, photoluminescent waterborne polyurethane coating with excellent mechanical properties based on double dynamic cross-linked network used for leather finishing

Progress in Organic Coatings, Journal Year: 2024, Volume and Issue: 190, P. 108386 - 108386

Published: March 14, 2024

Language: Английский

---

Kilogram-scale synthesis of carbon dots with high-efficiency full-color solid-state fluorescence using an aggregation-induced emission strategy

Chemical Engineering Journal, Journal Year: 2023, Volume and Issue: 476, P. 146405 - 146405

Published: Oct. 11, 2023

Language: Английский

---

Novel strategy of multidimensional information encryption via multi-color carbon dots aggregation-induced emission

Nano Research, Journal Year: 2024, Volume and Issue: 17(6), P. 5680 - 5687

Published: March 4, 2024

Language: Английский

---

Nitrogen-doped carbon dots as photocatalysts for organic synthesis: Effect of nitrogen content on catalytic activity

Nano Research, Journal Year: 2024, Volume and Issue: 17(6), P. 4825 - 4833

Published: Feb. 8, 2024

Language: Английский

---

Biomass-derived carbon dots with pharmacological activity for biomedicine: Recent advances and future perspectives

Science Bulletin, Journal Year: 2024, Volume and Issue: 69(19), P. 3127 - 3149

Published: Aug. 16, 2024

Language: Английский

---

Concentration‐Switchable Assembly of Carbon Dots for Circularly Polarized Luminescent Amplification in Chiral Logic Gates and Deep‐Red Light‐Emitting Diodes

Advanced Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 3, 2024

Abstract Stimuli‐responsive circularly polarized luminescent (CPL) materials are expected to find widespread application in advanced information technologies, such as 3D displays, multilevel encryption, and chiral optical devices. Here, using R‐/S‐α‐phenylethylamine 3,4,9,10‐perylenetetracarboxylic dianhydride precursors, carbon dots (Ch‐CDs) exhibiting bright concentration‐dependent luminescence synthesized, demonstrating reversible responses both their morphologies emission spectra. By adjusting Ch‐CD concentration, the switchable wavelength is extended over 180 nm (539–720 nm), with maximum quantum efficiency reaching 100%. Meanwhile, upon increasing red‐shifts, while chirality of assembled nanoribbons synchronously amplified, ultimately achieving CPL at 709 a asymmetry factor 2.18 × 10 −2 . These values represent longest largest g lum reported for CDs. Considering remarkable properties synthesized Ch‐CDs, logic gates designed, potential practical applications demonstrated anti‐counterfeiting flexible electronic printing, solid‐state CPL. Furthermore, deep‐red electroluminescence light‐emitting diodes (EL‐LEDs) prepared these an external 1.98%, which highest value date CDs EL‐LEDs, first report devices based on

Language: Английский

---

Chiral Aggregation-Induced Emission Carbon Dot-Based Multicolor and Near-Infrared Circularly Polarized Delayed Fluorescence via a Light-Harvesting System

The Journal of Physical Chemistry Letters, Journal Year: 2024, Volume and Issue: 15(7), P. 2049 - 2056

Published: Feb. 13, 2024

Circularly polarized luminescence (CPL) materials are the research frontier of chiral luminescence. As a kind luminescent carbon material, dots (CDs) expected to become excellent candidates for construction CPL materials. However, CD-based circularly afterglow emission, especially multicolor and near-infrared remains great challenge due aggregation-caused quenching instability triplet excitons. In this work, we synthesized CDs with aggregation-induced emission using dithiosalicylic acid l/d-arginine as precursors through one-step solvothermal method. Notably, exhibit green delayed fluorescence (DF) in poly(vinyl alcohol) films. Furthermore, is successfully realized via engineering light-harvesting system which DF act energy donors fluorescent dyes colors ranging from yellow near infrared serve acceptors.

Language: Английский

---