Multifunctional lanthanide coordination polymers (CPs) have the advantages of acting in two or more fields simultaneously. Herein, two single lanthanide CPs, formulated as LnL(D/L-Hlac)(HO)·0.5HO (Ln = Eu (), Tb (); HL = 4,4'-(pyridine-3,5-diyl)dibenzoic acid) and their doped lanthanide analogue TbEuL(D/L-Hlac)(HO)·0.5HO () were prepared through hydrothermal methods. Luminescence measurements reveal that displays red photoluminescence and its Commission International ed'Eclairage (CIE) coordinates are almost invariant in the temperature range from 80 to 300 K, while the emission color of changes from yellow to green and its CIE coordinates change from (0.36132, 0.56365) at 80 K to (0.30448, 0.45566) at 300 K. Significantly, not only displays white-light emission with CIE coordinates of (0.32999, 0.33406) but also exhibits a thermal sensitivity of 2.27% K at 230-300 K. The obviously larger thermal sensitivity in in comparison to that of 1.07% K for demonstrates that lanthanide CPs with both a heat-sensitive fluorescent thermometer and high-efficiency white-light emission can be expected by doping Eu(III) ions into Tb(III)-based CPs.
Download full-text PDF |
Source |
---|---|
http://dx.doi.org/10.1021/acs.inorgchem.1c00740 | DOI Listing |
Int J Biol Macromol
January 2025
The Liaoning Province Key Laboratory of Paper and Pulp Engineering, The Dalian Key Laboratory of High value application and development of Botanical Resources, The Key Laboratory of High Value Utilization of Botanical Resources of China Light Industry, College of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian 116034, China; Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, School of Light Industry and Food Engineering, Guangxi University, Nanning 530004, China. Electronic address:
As a novel fluorescent carbon nanomaterial, carbon dots are restricted by their poor fluorescence in the solid state, although they exhibit favorable photoluminescence in solution. N-doped carbon dots (N-CDs) and solid-state fluorescence films were prepared using green and renewable cellulose-derived materials, respectively. The hydrogen bonding network of carboxymethyl cellulose (CMC) inhibits the self-aggregation behavior of N-CDs, which leads to solid-state fluorescence.
View Article and Find Full Text PDFSmall
January 2025
Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati, 781039, India.
Image-guided photodynamic therapy is acknowledged as one of the most demonstrative therapeutic modalities for cancer treatment because of its high precision, non-invasiveness, and improved imaging ability. A series of purely organic photosensitizers denoted as BTMCz, BTMPTZ, and BTMPXZ, have been designed and synthesized and are found to exhibit both thermally activated delayed fluorescence and aggregation-induced emission simultaneously. Experimental and theoretical studies are combined to reveal that modulation of the donor of the photosensitizer enables distinct thermally activated delayed fluorescence via a second-order spin-orbit perturbation mechanism involving lowest singlet charge-transfer and higher-lying triplet locally excited states, respectively.
View Article and Find Full Text PDFRSC Adv
January 2025
Faculty of Materials Science and Engineering, Phenikaa University Yen Nghia, Ha-Dong District Hanoi 10000 Vietnam
Near-ultraviolet (NUV)-pumped white light-emitting-diodes (WLEDs) often suffer from poor color rendering in the 480-520 nm range, highlighting the need for an efficient cyan phosphor with strong absorption at 370-420 nm. This study presents the successful synthesis of cyan-emitting ZnS/ZnO phosphors using a high-energy planetary ball milling method followed by post-annealing. The fabricated phosphors, with particle sizes ranging from 1 to 3 μm, exhibit strong cyan emission with CIE chromaticity coordinates of (0.
View Article and Find Full Text PDFNat Commun
January 2025
College of Chemistry, Beijing Normal University, Beijing, 100875, P.R. China.
Developing donor-acceptor [n]cycloparaphenylenes (D-A [n]CPPs) with multiple emissions from different emissive states remains challenging yet crucial for achieving white-light emission in single-molecule. Here, we report our explorations into acceptor engineering of quinone-based D-A [10]CPPs (Nq/Aq/Tq[10]CPPs) via a post-lateral annulation using Diels-Alder reactions of oxTh[10]CPP. X-ray analysis reveals that Nq[10]CPP displays a side by side packing via naphthoquione stacking while Aq[10]CPP adopts an intercalated conformation through anthraquinone interaction.
View Article and Find Full Text PDFMicromachines (Basel)
December 2024
Department of Semiconductor Engineering, Gachon University, 1342 Seongnam-Daero, Soojung-gu, Seongnam 13120, Republic of Korea.
White organic light-emitting diodes (OLEDs) represent a significant technology in the display industry for the achievement of full color. However, sophisticated technologies are required for white light emission. In this paper, we developed a simple white light-emitting display device using a quantum-dot (QD) film and a greenish-blue OLED.
View Article and Find Full Text PDFEnter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!