Results 91 to 100 of about 52,286 (257)

Multi‐channel charge transfer delayed fluorescence enabling high‐efficiency organic light‐emitting diodes

open access: yesFlexMat, Volume 2, Issue 4, Page 533-581, December 2025.
The enhanced utilization of triplet excitons is a central theme in the evolution of organic luminescent materials. This review sums up recent research on multi‐channel charge transfer delayed fluorescence molecules, which exhibit a unique distribution of excited‐state energy levels, thereby enhancing the utilization rate of triplet excitons and ...
Guo‐Wei Chen   +6 more
wiley   +1 more source

Protein Tyrosine Phosphatase 1B Inhibitors from the Roots of Cudrania tricuspidata

open access: yesMolecules, 2015
A chemical investigation of the methanol extract from the roots of Cudrania tricuspidata resulted in the isolation of 16 compounds, including prenylated xanthones 1–9 and flavonoids 10–16.
Tran Hong Quang   +7 more
doaj   +1 more source

The Sensory and Physicochemical Properties of Honeybush Tea Depend on the Brewing Water: A Preliminary Study

open access: yesJournal of Food Science, Volume 90, Issue 12, December 2025.
ABSTRACT This study investigated how different water types affected honeybush (Cyclopia species) tea quality. Water types, varying in physicochemical properties, were used to brew tea from three honeybush species: C. intermedia, C. subternata, and C. genistoides (n = 6/species).
Helene van Schoor   +5 more
wiley   +1 more source

Charakterisierung zweier neuer antioxidativer Tetrahydroxyxanthone in Hypericum-Samen und rasterelektronenmikroskopische Untersuchung der Testa

open access: yesJulius-Kühn-Archiv, 2018
Hypericum seeds have recently been identified as a natural source of different xanthone derivatives. Two main constituents, the tetrahydroxyxanthones THX-1 and -2, were identified in methanolic extracts of H. perforatum and H.
Lorenz, Peter   +7 more
doaj   +1 more source

EFEKTIVITAS EKSTRAK KULIT MANGGIS(Garcinia mangostana) TERHADAP JUMLAH LIMFOSIT T CD4+ DAN KADAR IL-2 PADA PENDERITA HIV DENGAN TERAPI ANTIRETROVIRAL [PDF]

open access: yes, 2015
Background : HIV attacks human’s CD4+ T lymphocytes immunity system. IL-2 initiate cell cycle progression and CD4 T Lymphocytes proliferation. IL-2 becoming Indicator of immunity system repair within HIV infection2. HIV patients under ARV medication with
Amanah, Amanah
core  

Characterization of 2,3-diarylxanthones by electrospray mass spectrometry: gas-phase chemistry versus known antioxidant activity properties [PDF]

open access: yes, 2016
Xanthones (XH) are a class of heterocyclic compounds widely distributed in nature that hold numerous noteworthy biological and antioxidant activities. Therefore, it is of utmost importance to achieve relevant detailed structural information to understand
Barros, António S.   +5 more
core   +1 more source

Cytotoxic Prenylated Xanthones from the Pericarps of Garcinia mangostana

open access: yesMolecules, 2014
Bioassay-guided fractionation of an ethanol extract of the pericarps of Garcinia mangostana led to the isolation of two new prenylated xanthones, named 1,3,7-trihydroxy-2-(3-methyl-2-butenyl)-8-(3-hydroxy-3-methylbutyl)-xanthone (1) and 1,3,8 ...
Zeng Xu   +7 more
doaj   +1 more source

AMENTOFLAVON DARI DAUN NYAMPLUNG (Calophyllum inophyllum Linn.) [PDF]

open access: yes, 2012
Satu senyawa biflavonoid yaitu amentoflavon (1) berhasil diisolasi dari daun tumbuhan nyamplung (Calophyllum inophyllum Linn). Ekstraksi menggunakan metode maserasi dan pemurnian dengan kromatografi kolom dengan fasa diam Si-gel dan ...
Handayani, Nesti   +3 more
core  

Validation of a spectrophotometric method for quantification of xanthone in biodegradable nanoparticles [PDF]

open access: yes, 2004
Xanthone has been incorporated for the first time in nanoparticles of poly(D,L-lactide-co-glycolide) (PLGA). For this purpose the estimation of xanthone content in the nanoparticles is a crucial tool for guaranteeing the reliability of the results. Thus,
Barbosa, CM, Pinto, MMM, Teixeira, M
core  

Xanthones and sesquiterpene derivatives from a marine-derived fungus Scopulariopsis sp. [PDF]

open access: yes, 2018
K
Ashour, Mohamed L.   +10 more
core   +1 more source

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