We report the rational design of the matrix-free carbon dots (C-dots) with long wavelength and wavelength-tunable room-temperature phosphorescence (RTP). Taking advantage of microwave-assisted heating treatment, three RTP C-dots in boric acid (BA) composites are synthesized by using diethylenetriaminepentakis (methylphosphonic acid) as a multiple-sites crosslink agent, a moderately acid catalyst and P source; phenylenediamines (either o-PD, m-PD, or p-PD, respectively) as building block while BA as a carbonization-retardant matrix. After the water-soluble BA matrix is removed by dialysis, three matrix-free C-dots are obtained with RTP emission at 540, 550 and 570 nm under an excitation wavelength of 365 nm. Alterations of RTP emission of three matrix-free C-dots are ascribed to the difference in their particle size and band gap from n-π* transition. Furthermore, the application of three matrix-free C-dots are successfully performed in information encryption and decryption.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1002/asia.202201284 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
A Novel Matrix-Free Hyperfluorescent System Based on Anti-Quenching TADF Host for High Color Purity MR-TADF Emitters.
Adv Mater
December 2024
Department of Organic Materials Science, Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata, 992-8510, Japan.
Organic light-emitting diodes (OLEDs) based on hyperfluorescent system have attracted widespread attention due to their ability to simultaneously achieve improvements in efficiency, lifetime, and color purity by combining the advantages of high exciton utilization sensitizers and high-color purity emitters. Traditional hyperfluorescent systems typically involve three or four components and are severely sensitive to the doping concentration (≈0.5 wt%) of a terminal emitter, which inevitably causes high costs and difficulties in reproducibility.
View Article and Find Full Text PDFA consistent diffuse-interface model for two-phase flow problems with rapid evaporation.
Adv Model Simul Eng Sci
November 2024
Institute for Computational Mechanics, Technical University of Munich, Boltzmannstrasse 15, 85748 Garching, Germany.
We present accurate and mathematically consistent formulations of a diffuse-interface model for two-phase flow problems involving rapid evaporation. The model addresses challenges including discontinuities in the density field by several orders of magnitude, leading to high velocity and pressure jumps across the liquid-vapor interface, along with dynamically changing interface topologies. To this end, we integrate an incompressible Navier-Stokes solver combined with a conservative level-set formulation and a regularized, i.
View Article and Find Full Text PDFA Facile, Transfection-Free Approach to siRNA Delivery in In Vitro 3D Spheroid Models.
Curr Protoc
September 2024
Revvity Inc., Lafayette, Colorado.
Cell culture has long been essential for preclinical modeling of human development and disease. However, conventional two-dimensional (2D) cell culture fails to faithfully model the complexity found in vivo, and novel drug candidates that show promising results in 2D models often do not translate to the clinic. More recently, three-dimensional (3D) cell culture models have gained popularity owing to their greater physiological relevance to in vivo biology.
View Article and Find Full Text PDFEnhanced synthesis of antibody-functionalized gold nanoparticles for multiplexed exosome detection via mass signal amplification in LDI-TOF MS.
Anal Sci
September 2024
Department of Bioscience and Biotechnology, Bio/Molecular Informatics Center, Konkuk University, Seoul, 143-701, Korea.
We present a novel method for sensitive exosomal protein detection using organic matrix-free laser desorption/ionization time-of-flight mass spectrometry (LDI-TOF MS) and gold nanoparticles (AuNPs) functionalized with mass tags for signal amplification (Am-tags). Target exosomes were captured by specific antibodies on AuNPs and a biochip, where the antibody-presenting AuNPs (Ab/Am-tag@AuNPs) contained excess Am-tags. LDI-TOF MS analysis revealed the mass signal of Am-tags on Ab/Am-tag@AuNPs, indicating the presence of target exosomes.
View Article and Find Full Text PDFMatrix-free human pluripotent stem cell manufacturing by seed train approach and intermediate cryopreservation.
Stem Cell Res Ther
March 2024
Leibniz Research Laboratories for Biotechnology and Artificial Organs (LEBAO), Department of Cardiothoracic Transplantation and Vascular Surgery (HTTG), Hannover Medical School (MHH), Carl-Neuberg-Str. 1, 30625, Hannover, Germany.
Background: Human pluripotent stem cells (hPSCs) have an enormous therapeutic potential, but large quantities of cells will need to be supplied by reliable, economically viable production processes. The suspension culture (three-dimensional; 3D) of hPSCs in stirred tank bioreactors (STBRs) has enormous potential for fuelling these cell demands. In this study, the efficient long-term matrix-free suspension culture of hPSC aggregates is shown.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!