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Achieving Narrowband and Stable Pure Blue Organic Light-Emitting Diodes by Employing Molecular Vibration Limited Strategies in the Extended π-Conjugated Indolocarbazole Skeleton.
Adv Sci (Weinh)
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Jihua Hengye Electronic Materials Co. Ltd., Foshan, Guangdong, 528200, P. R. China.
B- and N-heterocyclic fluorophores have reveal promising efficiency in blue organic light-emitting diodes (OLEDs) with small full-width-at-half-maximum (FWHM). However, their structural determinants for spectral broadening and operating stability are still needed to be investigated in further. Herein, a novel multi-N-heterocycles Diindolo[3,2,1jk:3',2',1'jk]dicarbazole[1,2-b:4,5-b] (DIDCz) is proposed to manipulate the emission color toward pure blue region by extending π-conjugation of the N-π-N bridge.
View Article and Find Full Text PDFHot-Exciton Mechanism with Diphenyl Anthracene Core Unit: A Detailed Theoretical Study.
Chem Asian J
January 2025
Birla Institute of Technology & Science Pilani - Hyderabad Campus, Chemistry, INDIA.
Hot-exciton materials, among all kinds of organic light-emitting diode (OLED) emitters, have better exciton utilization efficiency and efficiency roll-off, making them possible for their practical applications. We studied the photophysical properties of a few hot-exciton molecules based on an anthracene core unit to efficiently harvest all triplet excitons to the lowest excited singlet state. The conversion of triplet exciton to singlet exciton utilizing hRISC can be enhanced due to the 1ππ*←3nπ* transition channel.
View Article and Find Full Text PDFHigh-Efficiency Intrinsically Thermoplastic Semiconducting Polymer with Excellent Strain-Tolerance Capacity for Flexible Ultra-Deep-Blue Polymer Light-Emitting Diodes.
Adv Mater
January 2025
The Institute of Flexible Electronics (IFE Future Technologies), Xiamen University, 422 Siming South Road, Xiamen, 361005, China.
Complex internal stresses that appear in flexible thin-film electronic devices under long-term deformation operation are associated with incompatible mechanical properties of the multiple layers, which potentially cause intralayer fracture and separation. These defects may result in device instability, performance loss, and failure. Herein, a thermoplastic functional strategy is proposed for manufacturing high-performance stretchable semiconducting polymers with excellent strain-tolerance capacities for flexible electronic devices.
View Article and Find Full Text PDFLuminescent Properties of Pr-Doped LiBaF Crystallites.
Inorg Chem
January 2025
Institute of Low Temperature and Structure Research, Polish Academy of Science, ul. Okólna 2, Wrocław 50-422, Poland.
Research is ongoing to develop new phosphors capable of emitting light across a broad spectrum, ranging from the ultraviolet (UV) to the infrared region, with potential applications in diverse fields. Using the method of solid-state reactions, a series of LiBaF:Pr phosphors were obtained, and their luminescent properties in the UV-visible range were studied. The photon cascade emission (PCE) phenomenon has been observed under excitation of the 4f5d bands of Pr.
View Article and Find Full Text PDFA signal amplifying MOF-based probe:on-site and ultrasensitive dual-channel portable detection of Hg in groundwater through a fluorimetrically and RGB-based sensing assay.
Talanta
January 2025
State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, Lanzhou University, Lanzhou, Gansu, 730000, People's Republic of China. Electronic address:
Mercury (II) ions (Hg) are a significant source of heavy metal contamination in groundwater, posing a serious threat to human health and the environment. Therefore, there is an urgent need for the development of a new detection technique with high sensitivity for monitoring Hg in contaminated groundwater. Here, we developed a signal amplifying MOF-based probe (NXS@ZIF-8) for on-site and ultrasensitive dual-channel portable detection of Hg in groundwater.
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