Sulfur‐Doped Carbonized Polymer Dots: A Biocompatible Photocatalyst for Rapid Aqueous PET‐RAFT Polymerization

Carbon Energy, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 25, 2025

ABSTRACT To achieve the target of carbon neutrality, it is crucial to develop an efficient and green synthesis methodology with good atomic economy sufficient utilization energy sustainable development. Photoinduced electron transfer reversible addition–fragmentation chain‐transfer (PET‐RAFT) polymerization a precise for constructing polymers well‐defined structures. However, conventional semiconductor‐mediated PET‐RAFT still has considerable limitations in terms efficiency as well environment. Herein, sulfur‐doped carbonized polymer dots (CPDs) were hydrothermally synthesized catalysis aqueous at unprecedented highest propagation rate 5.05 h −1 . The resulting have well‐controlled molecular weight narrow dispersion ( Ð < 1.10). Based on optoelectronic characterizations, we obtained insights into photoinduced process proposed mechanism CPD‐mediated polymerization. In addition, as‐synthesized CPDs also demonstrated be suitable wide range light sources (blue/green/solar irradiation), numerous monomers, low catalyst loading (low 0.01 mg mL ), multiple polar solvent environments, all which allowed efficiencies much higher than those existing methods. Finally, confirmed non‐cytotoxic catalyzed successfully cell culture media, indicating broad prospects biomedical fields.

Language: Английский

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Developing dual‐state ultra‐efficient emissive carbon dots as internal and external artificial antenna of chloroplasts to enhance plant‐photosynthesis

Aggregate, Journal Year: 2024, Volume and Issue: unknown

Published: July 19, 2024

Abstract Introducing fluorescent nanomaterials as artificial antennas of chloroplasts offers a promising approach to enhancing light harvesting in photosynthesis. However, this technology is limited by the dependence fluorescence efficiency on dispersed states that cannot enable inside and outside leaves play an antenna role. Here, we developed solution solid dual‐state ultra‐efficient blue emissive carbon dots (DuB 2 ‐CDs) regulating content graphitic‐N, surface hydroxyl groups. C–Si bonds based four‐component microwave synthesis. The as‐prepared DuB ‐CDs showed intense emission aqueous state, with absolute photoluminescence quantum yields 84.04% 95.69%, respectively. These features guaranteed internal infiltrating mesophyll system) external remaining leaves) can simultaneously enhance solar energy utilization chloroplasts. Compared control groups without use only, foliar application substantially enhanced electron‐transport rate, net photosynthesis psbA gene expression, NADPH production, other plant physiological parameters living during This work provided strategy for realizing CDs while maximizing plant‐photosynthesis augmentation.

Language: Английский

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Self-Assembly of Polymers and Their Applications in the Fields of Biomedicine and Materials

Polymers, Journal Year: 2024, Volume and Issue: 16(15), P. 2097 - 2097

Published: July 23, 2024

Polymer self-assembly can prepare various shapes and sizes of pores, making it widely used. The complexity diversity biomolecules make them a unique class building blocks for precise assembly. They are particularly suitable the new generation biomaterials integrated with life systems as they possess inherent characteristics such accurate identification, self-organization, adaptability. Therefore, many excellent methods developed have led to practical results. At same time, development advanced science technology has also expanded application scope synthetic polymers. By utilizing this technology, materials properties be prepared applied in field tissue engineering. Nanomaterials transparent conductive fields electronic displays smart glass. Multi-dimensional, controllable, multi-level between nanostructures been achieved through quantitative control polymer dosage combination, chemical modification, composite methods. Here, we list classic applications natural- artificially synthesized biomedicine materials, introduce cutting-edge technologies involved these applications, discuss in-depth advantages, disadvantages, future directions each type self-assembly.

Language: Английский

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Bismuth nanocluster loaded on N-doped porous carbon with “memory catalysis” effect for efficient photocatalytic H2 generation and uranium(VI) reduction

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 490, P. 151511 - 151511

Published: April 21, 2024

Language: Английский

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Thermally Activated Delayed Fluorescence (TADF) Carbonized Polymer Dots for Efficient Red-Light-Induced Reversible Deactivation Radical Polymerization

Macromolecules, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 22, 2024

Thermally activated delayed fluorescence (TADF) carbon dots (CDs) have generated interest due to their ability capture singlet and triplet excitons for efficient emission. However, there are still challenges in achieving high photocatalytic efficiency traditional TADF CDs prepared by matrix-confinement strategies. Herein, we propose a facile one-pot solvothermal synthesis strategy of matrix-free carbonized polymer (CPDs) with an absorption wavelength up the red-light region long lifetime 7.66 μs DMSO. The unprecedented high-efficiency CPDs as photocatalyst both organic aqueous solvents has been demonstrated first time red-light-triggered photoinduced electron/energy transfer–reversible addition–fragmentation chain transfer (PET-RAFT) polymerization atom radical (photo-ATRP), monomer conversion (>90%) narrow dispersity (Mw/Mn < 1.20). In addition, designed also successfully utilized inverse miniemulsion PET-RAFT system, expanding application scope reversible deactivation (photo-RDRP). This work offers unique avenue designing regulating intersystem crossing (ISC) reverse (RISC) processes achieve CD photocatalysts long-lived excited states effectively photocatalyzed RDRP.

Language: Английский

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