Results 91 to 100 of about 7,454 (221)

New synthetic strategies for xanthene-dye-appended cyclodextrins

open access: yesBeilstein Journal of Organic Chemistry, 2016
Xanthene dyes can be appended to cyclodextrins via an ester or amide bridge in order to switch the fluorescence on or off. This is made possible through the formation of nonfluorescent lactones or lactams as the fluorophore can reversibly cyclize.
Milo Malanga   +5 more
doaj   +1 more source

3,11-Dibromo-14-(4-chlorophenyl)-14H-dibenzo[a,j]xanthene dimethylformamide monosolvate

open access: yesActa Crystallographica Section E, 2012
In the title compound, C27H15Br2ClO·C3H7NO, the xanthene moiety has a flattened boat conformation with a folding angle between the naphthalene units of 9.46 (3)°.
Yong Bin Song, Bo Liu
doaj   +1 more source

Fluorescence Sensing of Anions Like Adenosine 5ʹ‐Triphosphate With pH‐Gated Porous Dye‐Loaded Cerasomes

open access: yesSmall, EarlyView.
The development of gated systems enabling controlled pore opening offers new opportunities for sensing applications. This study explores dye loading in porous and non‐porous cerasomes and pH‐dependent ATP‐triggered gating via polyamine anchors. Porous cerasomes were synthesized using block‐co‐polymers, enabling controlled proton influx and fluorescence‐
Romane Vinot   +4 more
wiley   +1 more source

Programmable Chirality Transfer: Seeding‐Directed Co‐Assembly of Functional Molecules With Amyloid Frameworks

open access: yesSmall, EarlyView.
Seeding‐directed co‐assembly enables efficient chirality transfer from chiral amyloid scaffold to achiral functional molecules. Controlled assembly pathways result in hierarchical hybrid supramolecular structures showing enhanced induced electronic circular dichroism (IECD) and/or vibrational circular dichroism (IVCD).
Aleksandra Kołodziejczyk   +3 more
wiley   +1 more source

Nano-Fe3O4 encapsulated-silica particles bearing sulfonic acid groups as an efficient, eco-friendly and magnetically recoverable catalyst for synthesis of various xanthene derivatives under solvent-free conditions

open access: yesJournal of Saudi Chemical Society, 2017
This report describes an efficient method for the synthesis of 1,8-dioxo-octahydroxanthene, 14H-dibenzo[a,j]xanthene, 12-aryl-tetrahydrobenzo[a]xanthenes-11-one and 13-aryl-5H-dibenzo[b,i]xanthene-5,7,12,14(13H)-tetraone derivatives in the presence of a ...
Firouzeh Nemati, Samane Sabaqian
doaj   +1 more source

White light emitting molecular logic gates

open access: yesSmart Molecules, EarlyView.
White light emitting smart molecules with Boolean logic computing ability are surveyed. Abstract White light emitting (WLE) materials are of considerable interest with commercial and societal applications in video displays and lighting devices. A characteristic property of WLE materials is the luminescence profile spanning from 380 to 700 nm.
Davide Benedetto Tiz   +2 more
wiley   +1 more source

Revisiting small‐molecule fluorescent probes in food freshness detection

open access: yesSmart Molecules, EarlyView.
Fluorescent probes serve as versatile tools for food freshness monitoring. This review summarizes recent advances in probes targeting biogenic amines, hydrogen sulfide, pH values, and other key spoilage markers, highlighting their design principles, sensing mechanisms, and practical applications in food quality monitoring. Abstract Food spoilage driven
Xinrui Wang   +5 more
wiley   +1 more source

Quantitative structure-activity relationship study of xanthene derivatives

open access: yes, 2018
Xanthenes are important class of biologically active compounds due to their broad spectrum of pharmacological activities such as bactericidial, anti-inflammatory, antiviral and antiproliferative activity.
Nikolić, Katarina   +7 more
core   +4 more sources

9-(2,4-Dichlorophenyl)-3,3,6,6-tetramethyl-3,4,5,6-tetrahydro-9H-xanthene-1,8(2H,7H)-dione

open access: yesActa Crystallographica Section E, 2010
The title compound, C23H24Cl2O3, was synthesized by reaction of 2,4-dichlorobenzaldehyde and 5,5-dimethylcyclohexane-1,3-dione in ethylene glycol. The central ring of the xanthene moiety is almost planar (with an r.m.s. deviation of 0.0268 &
Hao Shi
doaj   +1 more source

Harnessing the nonthermal effects of ultrasound for cancer treatment: From mechanisms to applications

open access: yesSmart Molecules, EarlyView.
Nonthermal ultrasound transforms acoustic energy into diverse therapeutic bioeffects through cavitation, mechanical stimulation, and physicochemical activation. This review discusses how acoustic parameters, biological mechanisms, and responsive materials interact to influence nonthermal ultrasound‐enabled cancer therapies. Mechanism‐guided engineering
Liu Wang   +5 more
wiley   +1 more source

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