Results 61 to 70 of about 1,749 (157)

Synthesis of Indolocarbazole‐Diketopyrrolopyrrole Dyads and Investigation of Their Photoinduced Electron Transfer Properties

open access: yesAsian Journal of Organic Chemistry, Volume 15, Issue 2, February 2026.
Three ICZ‐DPP dyads are synthesized using the Suzuki–Miyaura cross‐coupling reaction as a key step. Photophysical studies of the dyads showed broad and strong visible light absorption, and ultrafast electron transfer from ICZ donor to DPP acceptor, leading to charge separated state in polar solvents.
Richa Agrawal   +5 more
wiley   +1 more source

Tannic Acid an Efficient Catalyst for the Synthesis of 12-aryl-8,9,10,12-tetrahydrobenzo[a]xanthen-11-one Derivatives

open access: yesOrbital: The Electronic Journal of Chemistry, 2015
Tannic acid explore a highly efficient catalytic activity for the synthesis of 12-aryl-8,9,10,12-tetrahydrobenzo[a]xanthen-11-one derivatives in excellent yields via cyclocondensation of aromatic aldehyde, β-naphthol and dimedone.
Deepak S. Kawade   +3 more
doaj   +3 more sources

Mechanochromic Organic Materials: Molecular Mechanisms and Multidimensional Applications

open access: yesAdvanced Physics Research, Volume 5, Issue 2, February 2026.
Mechanochromic (MC) organic materials change color in response to mechanical force. This review elucidates the molecular mechanisms (e.g., aggregation‐induced emission, AIE) and explores their multidimensional applications in sensors, anti‐counterfeiting, biomedical devices, and structural health monitoring, providing a roadmap for future smart ...
Xiaozhe Yin   +5 more
wiley   +1 more source

Design of a New Nano Hinge Molecular Machine Based on Nitrogen Inversion: Computational Investigation [PDF]

open access: yesIranian Journal of Chemistry & Chemical Engineering, 2016
Ab initio calculations were employed to investigate nitrogen inversion as a configuration change that can supply an infinitely useful switchable control mechanism for some complex systems.
Sara Soleimani Gorgani   +1 more
doaj  

Photosensitization of Colloidal SnO2 Semiconductor Nanoparticles with Xanthene Dyes

open access: yesJournal of Chemistry, 2013
The photochemical behavior of xanthene dyes (fluorescein, erythrosine, and eosin) with colloidal SnO2 nanoparticles was probed by UV-visible, steady state, and time resolved fluorescence measurements. The prepared SnO2 nanoparticles were characterized by
N. Nagarajan   +3 more
doaj   +1 more source

9-Aryl Substituted Hydroxylated Xanthen-3-ones: Synthesis, Structure and Antioxidant Potency Evaluation

open access: yesCroatica Chemica Acta, 2015
Oxidative stress is directly related to several diseases and symptoms, where antioxidant compounds, such as xanthenes, may become important in prevention and/or treatmant.
Elma Veljović   +7 more
doaj   +1 more source

Bifunctional Molecular Switches in Fused Diarylethene–Rhodamine Systems

open access: yesChemPhotoChem, Volume 10, Issue 2, February 2026.
Spectroscopic and time‐dependent density‐functional theory studies show that these novel rhodamine‐based diarylethene (DAE) compounds display intense UV absorption, undergo reversible two‐step protonation involving triazole and rhodamine units, and respond selectively to acid, base, and metal ions.
Bassima Hoteit   +5 more
wiley   +1 more source

Highly Efficient Synthesis of 1-Thioamidoalkyl-2-naphthols and 14-Aryl-14H-dibenzo[a,j]xanthenes using a Novel Ionic Liquid: Catalyst Preparation, Characterization and Performing the Reactions

open access: yesBulletin of Chemical Reaction Engineering & Catalysis, 2018
In this work, a novel Brønsted acidic ionic liquid namely triethylaminium-N-sulfonic acid trifluoroacetate {[TEASA][TFA]} has been synthesized by the reaction of NEt3 with ClSO3H, and then with CF3CO2H. The ionic liquid has been characterized by studying
Atefeh Saadat   +3 more
doaj   +1 more source

Filomicelle‐Embedded Composite Hydrogels for Localized Gelation Within the Anterior Chamber of the Eye

open access: yesSmall, Volume 22, Issue 7, 2 February 2026.
A composite hydrogel (C‐gel) incorporating PEG‐b‐PPS filomicelles enables localized in situ gelation and sustained nanocarrier release within the anterior chamber. The filamentous structure promotes spatial confinement of multi‐arm polymer crosslinking, even upon injection into large aqueous volumes, and gradually transitions into spherical micelles ...
Hyeohn Kim   +6 more
wiley   +1 more source

Comparison among Different pH Values of Rhodamine B Solution Impregnated into Mesoporous Silica

open access: yesOrbital: The Electronic Journal of Chemistry, 2013
We studied the behavior of different pH values of Rhodamine B solution impregnated into pores of mesoporous silica, through structural characterization techniques, such as scanning electron microscopy and porosity measurements, and spectroscopic ...
Juliana Jorge   +2 more
doaj   +1 more source

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