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Herein we report the construction of an inherently chiral carbon nanoring, cyclo[7]paraphenylene-2,9-rubicene (), by combining rubicene with a C-shaped synthon through the Suzuki-Miyaura coupling reaction. The structure was fully confirmed by high-resolution mass spectroscopies (HR-MS) and various NMR techniques. The photophysical properties were investigated by UV-vis absorption and fluorescence spectroscopy as well as the time-resolved fluorescence decay. Moreover, two enantiomers - were successfully resolved by recyclable HPLC and studied by CD and CPL spectra.
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http://dx.doi.org/10.1021/acs.joc.4c00387 | DOI Listing |
ACS Omega
September 2025
Instituto de Macromoléculas Professora Eloisa Mano, Universidade Federal do Rio de Janeiro (IMA/UFRJ), Rio de Janeiro, Rio de Janeiro 21941-598, Brazil.
This study reports the synthesis and functionalization of poly-(-vinylcarbazole) (PVK) with anthracene units to enhance its blue photoluminescence properties. Structural and thermal analyses confirmed successful incorporation of anthracene moieties into the PVK backbone at an approximate 3:1 ratio of PVK repeat unit to anthracene. Photophysical characterization showed that anthracene-functionalized PVK (PVK-An) retained blue-region emission (432 nm), although with reduced emission efficiency due to π-π stacking interactions.
View Article and Find Full Text PDFNatl Sci Rev
August 2025
Center for AIE Research, Shenzhen Key Laboratory of Polymer Science and Technology, Guangdong Provincial Key Laboratory of New Energy Materials Service Safety, College of Material Science and Engineering, Shenzhen University, Shenzhen 518060, China.
Multimodal phototheranostics has been recognized as one of the most momentous advances in cancer treatment. Of particular interest is a single molecular species simultaneously featuring in multiple imaging and synergistic phototherapies; the development of such a molecular species is nevertheless a formidably challenging task. Herein, we innovatively designed and synthesized three aggregation-induced emission (AIE)-active molecules with emission in the second near-infrared (NIR-II) window, by employing 10-indeno[1,2-][1,2,5]thiadiazolo[3,4-]quinoxalin-10-one as the electron acceptor, 4-(-butyl)--(4-(-butyl)phenyl)--phenylaniline as the electron donor, and different π-bridge moieties.
View Article and Find Full Text PDFRSC Adv
August 2025
Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research-Raebareli (NIPER-R) Lucknow UP 226002 India +91-522-2975587 +91-522-2499703.
This paper presents a metal-free synthetic protocol for assembling novel benzofuro[2,3-]pyridin-3-ols (BFPYOLs) using 2,3-disubstituted benzofuran derivatives with good yield. The method's advantages include the absence of an expensive metal catalyst, organic ligands, and easily accessible starting materials. The photophysical properties of the synthesized BFPYOLs are investigated, revealing that the largest is displayed by compound 7g at 389 nm, while the largest is observed in compound 7i at 494 nm in DMSO solvent.
View Article and Find Full Text PDFLuminescence
September 2025
Beijing Key Laboratory of Energy Conversion and Storage Materials, Beijing, China.
A novel aggregation-induced emission (AIE) system with superior performance was successfully developed through local chemical modification from thiophene to thiophene sulfone. This approach, leveraging easily accessible tetraphenylthiophene precursors, dramatically enhances the photophysical properties in a simple oxidation step. Notably, the representative 2,3,4,5-tetraphenylthiophene sulfone (3c) demonstrates remarkable solid-state emission characteristics with a fluorescence quantum yield of 72% and an AIE factor of 240, substantially outperforming its thiophene analog.
View Article and Find Full Text PDFNanoscale
September 2025
College of Physics, Hebei Normal University, Shijiazhuang 050024, China.
MoSe nanosheet/Si heterojunction photodetectors were fabricated by a mechanical exfoliation method, and their electrical and optical properties at different temperatures were investigated. It was found that the MoSe nanosheet/Si heterojunction device exhibited excellent rectification characteristics at room temperature, and the rectification ratio gradually decreased with the decrease of temperature. The temperature-dependent electrical properties of the MoSe/Si heterojunction device were actually caused by the inhomogeneity of the potential barrier.
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