A set of polymer-embedded, two-colored nanocomposites were prepared where the co-existing emission peaks (~578 nm and ~650 nm) had different ratios at their emission thresholds. The nanocomposite samples were simultaneously excited by a 405 nm laser, and the growth of photoluminescence intensities was studied as a function of excitation intensity. The two peaks showed different growth evolution mechanisms. The factors impacting this difference could be (1) energy transfer between the two sized nanoparticles; (2) relaxation mechanism of smaller nanoparticles; and (3) material properties of the polymer.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10820105 | PMC |
| http://dx.doi.org/10.3390/mi15010111 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Accurate DNA Sequence Prediction for Sorting Target-Chirality Carbon Nanotubes and Manipulating Their Functionalities.
ACS Nano
January 2025
South China Advanced Institute for Soft Matter Science and Technology, School of Emergent Soft Matter, South China University of Technology, Guangzhou 510640, China.
Synthetic single-wall carbon nanotubes (SWCNTs) contain various chiralities, which can be sorted by DNA. However, finding DNA sequences for this purpose mainly relies on trial-and-error methods. Predicting the right DNA sequences to sort SWCNTs remains a substantial challenge.
View Article and Find Full Text PDFPressure-Induced Structural Phase Transitions and Photoluminescence Properties of Micro/Nanocrystals HoF.
Inorg Chem
October 2024
School of Science, Shenyang Jianzhu University, Shenyang 110168, China.
HoF crystals of varying sizes and morphologies were synthesized by controlling the amount of water. As the water content gradually decreased, the size of the crystals reduced, transforming from microcrystals to approximately 100 nm nanocrystals with unique morphologies. At room temperature, the pressure-induced phase transitions, and photoluminescence (PL) properties of HoF micro/nanocrystals are studied using in situ high-pressure PL technique.
View Article and Find Full Text PDFPhotoluminescence from Two-Phase Nanocomposites Embedded in Polymers.
Micromachines (Basel)
January 2024
Ullrich Photonics LLC, Manistique, MI 49854, USA.
A set of polymer-embedded, two-colored nanocomposites were prepared where the co-existing emission peaks (~578 nm and ~650 nm) had different ratios at their emission thresholds. The nanocomposite samples were simultaneously excited by a 405 nm laser, and the growth of photoluminescence intensities was studied as a function of excitation intensity. The two peaks showed different growth evolution mechanisms.
View Article and Find Full Text PDFPhotochromic and Electric Field-Regulating Luminescence in High-Transparent (K,Na)NbO-Based Ferroelectric Ceramics with Two-Phase Coexistence.
ACS Appl Mater Interfaces
August 2022
Faculty of Printing Packaging Engineering and Digital Media Technology, Xi'an University of Technology, Xi'an 710048, China.
Rare earth Tb doped (KNaLi)(NbBi)O (KNNLB-%Tb) lead-free transparent ferroelectric ceramics were designed and prepared. The effects of Tb on phase structure, microstructure, optical transmittance, photoluminescence, and photochromic behaviors were studied. Although two ferroelectric phases coexist, the optical transmittance can reach the high value of 74% in the visible light region because of the fine grains, dense ceramic microstructure, large optical energy band gap, and relatively high symmetry of coexisting ferroelectric phases.
View Article and Find Full Text PDFThermo-responsive nanogels, poly(NIPAM-AAM) were prepared by a facile method of free radical one-pot precipitation based on monomeric N-isopropylacrylamide (NIPAM). At the same time, surface carboxyl group-modified fluorescent conjugated polymer nanoparticles (PNPs-COOH) were immobilized in the nanogel networks by hydrogen bonding to show bright green photoluminescence and outstanding thermo-responsive properties with a typical two-phase Tai Chi structure. Poly(NIPAM-AAm)-PNPs-COOH displays a larger change of hydrodynamic diameter (Dh) and a reversible volume transition from ∼150 nm at 40 °C to ∼1.
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!