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Efficient Spin-Light-Emitting Diodes With Tunable Red to Near-Infrared Emission at Room Temperature.
Adv Mater
January 2025
Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR, 999077, P. R. China.
Spin light-emitting diodes (spin-LEDs) are important for spin-based electronic circuits as they convert the carrier spin information to optical polarization. Recently, chiral-induced spin selectivity (CISS) has emerged as a new paradigm to enable spin-LED as it does not require any magnetic components and operates at room temperature. However, CISS-enabled spin-LED with tunable wavelengths ranging from red to near-infrared (NIR) has yet to be demonstrated.
View Article and Find Full Text PDFRecent Advances in Tetra-Coordinate Boron-Based Photoactive Molecules for Luminescent Sensing, Imaging, and Anticounterfeiting.
Precis Chem
January 2025
Key Laboratory of Applied Surface and Colloid Chemistry of Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710119, P. R. China.
Tetra-coordinate boron-based fluorescent materials hold considerable promise across chemistry, biology and materials science due to their unique and precisely tunable optoelectronic properties. The incorporation of the heteroatom boron (B) enables these materials to exhibit high luminescence quantum yields, adjustable absorption and emission wavelengths, and exceptional photostability. This review examines the molecular design and applications of tetra-coordinate boron-based photoactive molecules, highlighting their roles in fluorescence sensing, anticounterfeiting, and imaging.
View Article and Find Full Text PDFState-of-the-art progress and prospect of metal-organic frameworks and composites for photoelectrochemical amino-drugs sensing.
Environ Res
January 2025
Energy Convergence Research Center, Seoul National University of Science and Technology, 232 Gongneung-ro, Nowon-gu, Seoul, 01811, Republic of Korea; Department of Fine Chemistry, Seoul National University of Science and Technology, 232, Gongneung-ro, Nowon-gu, Seoul 01811, Republic of Korea; Institute for Applied Chemistry, Seoul National University of Science and Technology, 232 Gongneung-ro, Nowon-gu, Seoul 01811, Republic of Korea. Electronic address:
Unregulated discharge of antibiotics in waterbodies has posed significant threat to the aquatic flora and fauna in post-pandemic times. This alarming situation has ascertained the need for suitable sensors to detect persistent antibiotic residues. In this context, functional hybrid materials centralized on reticular metal-organic frameworks (MOFs)/composites have been a research hot spot for photoelectrochemical host-guest recognition events over the past two decades.
View Article and Find Full Text PDFInvestigation on luminescence characteristics of Dy-Tb co-doped phospho-tellurite glasses for tunable green/ white LED applications.
Spectrochim Acta A Mol Biomol Spectrosc
January 2025
Department of Physics, Indian Institute of Engineering Science and Technology, Shibpur, Howrah 711103, West Bengal, India.
Dy/Tb co-doped glasses have drawn profound attention for their potential in solid state lighting due to their unique luminescence properties. This research highlights the effect of compositional variation on structural and optical characteristics of Dy/Tb co-doped phospho-tellurite glasses through a comprehensive analysis involving X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR) and photoluminescence (PL) studies. XRD and FTIR spectroscopy are conducted to characterize the glass matrix and confirm its structural integrity.
View Article and Find Full Text PDFRigidly Locked Pyrene Excimers in Planar Chiral Pyrenophanes for Intense and Stable Circularly Polarized Photoluminescence and Electrochemiluminescence.
Angew Chem Int Ed Engl
January 2025
East China Normal University, Department of Chemistry, 3663 N. Zhongshan Road, 200062, Shanghai, CHINA.
Aiming at the construction of novel platforms with excellent performances in both circularly polarized photoluminescence (CP-PL) and electrochemiluminescence (CP-ECL), a new family of pyrenophanes with rigidly locked pyrene dimers and varied bridges has been designed and synthesized. Attributed to densely packed pyrene excimers, the resultant pyrenophanes revealed tunable bridge-dependent emission behaviors, as investigated by femtosecond time-resolved transient absorption spectroscopy. More importantly, all these planar chiral pyrenophanes display strong CP-PL with large dissymmetry factor (gPL) values up to 0.
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