Results 91 to 100 of about 332,106 (256)

Spectroscopic Studies of the Interaction of Silver Nanoparticles with Methylene Blue

open access: yesJournal of Measurement Science and Instrumentation, 2010
The interaction between silver nanoparticles and Methylene Blue(MB)is studied by UV-Vis spectroscopy and fluorescence spectrometry.The UV-Vis absorption of the silver nanoparticles changes dramatically with the addition of MB.However,no obvious changes ...
Chuan DONG, Jun ZHANG, Dai-zi ZHOU
doaj  

The High Resolution Infrared Spectrum of HCl+ [PDF]

open access: yes, 2016
The chloroniumyl cation, HCl+, has been recently identified in space from Herschel’s spectra. A joint analysis of extensive vis-UV spectroscopy emission data together with a few high-resolution and high-accuracy millimiter-wave data provided the ...
Cernicharo, José   +4 more
core   +2 more sources

Modulating Two‐Photon Absorption in a Pyrene‐Based MOF Series: An In‐Depth Investigation of Structure–Property Relationships

open access: yesAdvanced Functional Materials, EarlyView.
This study investigates H4TBAPy‐based metal–organic frameworks (MOFs) ‐ NU‐1000, NU‐901, SrTBAPy, and BaTBAPy ‐ for multiphoton absorption (MPA) performance. It observes topology‐dependent variations in the 2PA cross‐section, with BaTBAPy exhibiting the highest activity.
Simon N. Deger   +10 more
wiley   +1 more source

SERS Detection of Graphene Oxide in Acid Catalyzed Sol-Gels [PDF]

open access: yes, 2017
Silica sol-gel and aerogel substrates were synthesized using a modified acid catalyzed hydrolysis of tetramethyl orthosilicate method that incorporated graphene oxide and silver nanoparticles into the matrix.
Atkinson, Elizabeth J.O.   +1 more
core   +1 more source

Optical and photo-electrochemical characterization of organic-inorganic photosensitive materials [PDF]

open access: yes, 2009
This work reports on the optical and photoelectrochemical properties of polybithiophene (PBiTh) films electrochemically synthesized onto indium-tin oxide (ITO) substrates and modified with incorporation of indium phosphide (InP) when present in solution ...
B. Nessark   +3 more
core   +4 more sources

Demonstration of an All‐Optical AND Gate Mediated by Photochromic Molecules

open access: yesAdvanced Functional Materials, EarlyView.
A logic AND gate that runs on photons is demonstrated. It relies on two spatially separated photochromic molecules that work in tandem. Abstract The realization of a photonic logic AND gate, i.e. a logic AND gate that runs on photons rather than electrons, and where all steps are controlled by light, is demonstrated. In a proof‐of‐principle experiment,
Heyou Zhang   +7 more
wiley   +1 more source

Materiais híbridos orgânico-inorgânicos (ormosil) obtidos por sol-gel com potencial uso como filtro solar

open access: yesQuímica Nova, 2011
This work aimed at the synthesis and characterization of particles of modified silica containing the organic filter dibenzoylmethane (DBM) by the hydrolytic sol-gel method, with modifications to the Stöber route.
Jane K. de F. B. Machado   +5 more
doaj   +1 more source

Characterization of wine fermentations using fiber optic-mediated UV-VIS-SWNIR spectroscopy [PDF]

open access: yes, 2011
Spectroscopy is widely used in biological sciences, being applied to liquids, pastes, powders, films, fibers, gases and surfaces. It makes possible to characterize proteins, peptides, lipids, membranes and carbohydrates in pharmaceuticals, foods, plants ...
Castro, C. C.   +6 more
core  

Mercury removal in wastewater by iron oxide nanoparticles [PDF]

open access: yes, 2016
Mercury is one of the persistent pollutants in wastewater; it is becoming a severe environmental and public health problem, this is why nowadays its removal is an obligation.
C Hincapié   +9 more
core   +2 more sources

Near‐Infrared Emitting Lanthanide Catecholate Giant Single Crystals – Morphology Control and Photon Down‐Conversion

open access: yesAdvanced Functional Materials, EarlyView.
Controlled syntheses of lanthanide coordination polymers based on the dihydroxybenzoquinone (DHBQ) organic linker afforded large single crystals of Ln‐DHBQ CPs (Ln = Yb, Nd). A novel structural variant of Yb‐DHBQ is identified by means of single crystal diffraction analysis.
Marina I. Schönherr   +7 more
wiley   +1 more source

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