[reaction: see text] Novel two-dimensional octupoles containing donors at the core and acceptors at the edge of peripheral groups were synthesized by Horner-Wittig reactions. These chromophores show very large first hyperpolarizability and good thermal stability and are attractive candidates for nonlinear optical materials.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1021/ol025739n | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Author Correction: Ultra-broadband all-optical nonlinear activation function enabled by MoTe/optical waveguide integrated devices.
Nat Commun
January 2025
Zhejiang Lab, Hangzhou, Zhejiang, 311121, China.
Exploring van der Waals Cuprate Superconductors Using a Hybrid Microwave Circuit.
Nano Lett
January 2025
Max Planck Institute for Chemical Physics of Solids, 01187 Dresden, Germany.
The advent of two-dimensional van der Waals materials is a frontier of condensed matter physics and quantum devices. However, characterizing such materials remains challenging due to the limitations of bulk material techniques, necessitating the development of specialized methods. Here, we investigate the superconducting properties of BiSrCaCuO flakes by integrating them with a hybrid superconducting microwave resonator.
View Article and Find Full Text PDFDesigning rare earth borates as UV nonlinear optical crystals exhibiting strong second-harmonic generation responses.
Chem Commun (Camb)
January 2025
Tianjin Key Laboratory of Functional Crystal Materials, Institute of Functional Crystal, Tianjin University of Technology, Tianjin 300384, China.
Two new rare earth borate NLO crystals, KNaSrYBO and RbBaLuBO, were successfully designed and synthesized, which feature NLO-active [BO] groups and [Y/LuO] polyhedra. They exhibit notably short UV absorption cutoff edges below 200 nm, wide band gaps exceeding 6.2 eV, and strong second-harmonic generation intensities that are comparable to KDP.
View Article and Find Full Text PDFRed-shifted optical absorption induced by donor-acceptor-donor π-extended dibenzalacetone derivatives.
RSC Adv
January 2025
Programa de Pós-Graduação em Ciência e Engenharia de Materiais, Universidade Federal Rural do Semi-Árido (UFERSA) CEP 59625-900 Mossoró RN Brazil
Chalcones demonstrate significant absorption in the near ultraviolet-visible spectrum, making them valuable for applications such as solar cells, light-emitting diodes, and nonlinear optics. This study investigates four dibenzalacetone derivatives (DBAd), DBA, DBC, DEP, and DMA, examining the impact of electron-donating and electron-withdrawing groups and conjugation elongation on their electronic structure in solvents of varying polarities. Using the Polarizable Continuum Model (PCM) and time-dependent density functional theory (TD-DFT), we characterized the excited states of these compounds.
View Article and Find Full Text PDFBroadband and large surface enhancements of the local electric field enabled by cross-etched hyperbolic metamaterials.
Nanoscale
January 2025
State Key Laboratory of Optoelectronic Materials and Technologies, School of Physics, Sun Yat-Sen University, Guangzhou 510275, China.
Hyperbolic metamaterials (HMMs) have recently attracted significant research attention due to their hyperbolic wavevector iso-frequency contour, which leads to substantial local electric field (EF) enhancements that benefit optical processes, such as the nonlinear generation, quantum science, biomedical sensing, and more. However, three main challenges hinder their practical implementation: the difficulty in exciting their resonant modes using free-space incidence, the weak enhancement of surface EF, and the narrow spectral range of EF enhancements. Herein, we proposed cross-etched HMMs (CeHMMs) as a novel type of HMM, addressing these issues.
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!