We report that non-contact optical temperature sensing can be achieved with the use of heavily Nd3+ doped NaYF4 nanoparticles. The evaluation realized either by monitoring absolute luminescence intensity or measuring ratio two Stark components 4F3/2 multiplet in ions.

A combination of cyclic voltammetry, UV-vis-NIR spectroelectrochemistry, time-dependent density functional theory (TD-DFT), and Z-scan measurements employing a modified optically transparent thin-layer electrochemical (OTTLE) cell has been used to identify assign intense transitions metal alkynyl complexes at technologically important wavelengths in the oxidized state utilize these demonstrate facile electrochromic switching optical nonlinearity. Cyclic voltammetric data for ruthenium(II)...

Successive oxidation processes in a heterobimetallic iron–ruthenium complex (see picture) "switch" the optical transitions at long wavelengths, and these linear electrochromic effects are accompanied by changes nonlinear properties of complex. Supporting information for this article is available on WWW under http://www.wiley-vch.de/contents/jc_2002/2006/z602684_s.pdf or from author. Please note: The publisher not responsible content functionality any supporting supplied authors. Any queries...

More than on and off: The title complex (see picture) comprises addressable modules that respond independently to protic (alkynyl ligand⇄vinylidene ligand), electrochemical (metal-centered redox: RuII⇄RuIII), photochemical (dithienylperfluorocyclopentene ring-opening⇄ring-closing) stimuli. six states are interconverted along seven pathways, all of which result in distinct changes cubic nonlinearity. Detailed facts importance specialist readers published as "Supporting Information". Such...

Förster resonance energy transfer (FRET) between nanoparticles of up-conversion lanthanide phosphor as donors and quantum dots acceptors is demonstrated. Fluoride (NaYF4) nanocrystals (ca. 30 nm size) codoped with the Er3+ Yb3+ ions were synthesized a high-pressure solvothermal microwave assisted technique dispersed in organic solvent. Up-converted luminescence from rare-earth doped into fluoride nanomatrix was achieved optical pumping NIR (976 nm) region. The green erbium upconversion...

Molecular chromophores with twisted π-electron systems have been shown to possess unprecedented values of the quadratic hyperpolarizability, β, very large real parts and much smaller imaginary parts. We report here an experimental theoretical study which shows that these also part cubic γ, is responsible for nonlinear refraction. Thus, two-ring chromophore TMC-2 at 775 nm, relatively close one-photon resonance, n(2) extrapolated neat substance positive (1.87 × 10(-13) cm(2)/W), leading...

A mixed-metal approach has been used to control the size and physicochemical properties of heterometallic Co/ZIF-8 nanomaterials. Intentional substitution zinc with cobalt in a broad concentration range (from 0 100 molar percent 10% step) provided series nanoparticles, whose sizes could be tuned from 20 over 500 nm diameter. Zinc ions ZIF-8 matrix were found uniformly substituted ions. The increase nanoparticles resulted change their nitrogen sorption–desorption characteristics due...

Abstract Multi‐photon absorption (MPA) is among the most prominent nonlinear optical (NLO) effects and has applications, for example in telecommunications, defense, photonics, bio‐medicines. Established MPA materials include dyes, quantum dots, organometallics conjugated polymers, often dispersed solution. We demonstrate how metal–organic frameworks (MOFs), a novel NLO solid‐state class, can be designed exceptionally strong behavior. MOFs consisting of zirconium‐ hafnium‐oxo‐clusters...

Abstract The activity in the research on novel optical materials exhibiting nonlinear (NLO) properties is surveyed, especially absorption, that may be attractive for various applications, including those optoelectronics, photonics, and biophotonics. recently introduced concept of “NLO pigments”—insoluble colored can exhibit useful NLO effects—is demonstrated to apply multifunctional group coordination polymers (CPs) their subgroup metal‐organic frameworks (MOFs), which applied...

ADVERTISEMENT RETURN TO ISSUEPREVCommunicationNEXTOrganometallic Complexes for Nonlinear Optics. 16.1 Second and Third Order Optical Nonlinearities of Octopolar Alkynylruthenium ComplexesAndrew M. McDonagh, Mark G. Humphrey, Marek Samoc, Barry Luther-Davies, Stephan Houbrechts, Tatsuo Wada, Hiroyuki Sasabe, André PersoonsView Author Information Department Chemistry, Australian National University Canberra, ACT 0200, Australia Photonics Cooperative Research Centre, Laser Physics Centre School...

A soluble, oxidatively and thermally very stable alkynylruthenium dendrimer 1,3,5-C6H3(4-C⋮CC6H4C⋮C-trans-[Ru(dppe)2]C⋮C-3,5-C6H3-{4-C⋮CC6H4C⋮C-trans-[Ru(C⋮CPh)(dppe)2]}2)3, containing a large two-dimensional π-delocalized system, has been prepared using an experimentally straightforward convergent synthetic approach. The first third-order nonlinear optical (NLO) measurements of organometallic have obtained the Z-scan technique at wavelength 800 nm. Progression from...

We investigated the third-order nonlinear optical properties of several soluble π-conjugated polymers with a goal reliable determination parameters that characterize nonlinearity, such as real and imaginary parts refractive index n2 one-photon loss two-photon merit factors W T, respectively. The measurements were performed at 800 nm 100-fs pulses from an amplified Ti:sapphire system. present results investigations 2,5-substituted poly(p-phenylene vinylenes), including...

The syntheses of trans-[Ru(CCHR)Cl(pp)2]PF6 (pp = dppm, R 4-C6H4C⋮CPh, 4-C6H4CHO, 4,4'-C6H4C⋮CC6H4NO2, (E)-4,4'-C6H4CHCHC6H4NO2, 4,4',4' '-C⋮CC6H4C⋮CC6H4C⋮CC6H4NO2; pp dppe, (E)-4,4'-C6H4CHCHC6H4NO2) and trans-[Ru(C⋮CR)Cl(pp)2] are reported, together with X-ray structural studies 4-C6H4C⋮CPh; (E)-4,4'-C6H4CHCHC6H4NO2). Cyclic voltammetric, linear optical, quadratic cubic nonlinear optical response data for these new complexes, the corresponding previously reported Ph, 4-C6H4NO2; 4-C6H4NO2)...

The results of degenerate four-wave mixing studies performed on evaporated films metal-free phthalocyanine and Langmuir–Blodgett a silicon using subpicosecond 602 nm pulses are reported. third-order nonlinearity all the samples is high permitting observation signal from even monolayer. In both cases, has resonant character observed time-resolved phase conjugate signals provide information dynamics excitons. Simultaneously monitoring first- second-order diffractions transient gratings formed...

A combination of cyclic voltammetry (CV), UV-vis-NIR spectroscopy and spectroelectrochemistry, hyper-Rayleigh scattering (HRS) [including depolarization studies], Z-scan degenerate four-wave mixing (DFWM) studies employing an optically transparent thin-layer electrochemical (OTTLE) cell to effect switching nonlinearity], pump-probe, electroabsorption (EA) measurements have been used comprehensively investigate the electronic, linear optical, nonlinear optical (NLO) properties nanoscopic...

Femtosecond response and relaxation of the third-order optical nonlinearity in a newly developed poly (p-phenylene vinylene)/sol-gel silica composite are investigated by time-resolved forward wave degenerate four-wave mixing, Kerr gate, transient absorption techniques using 60 fs pulses at 620 nm. Using theoretical description two- mixing optically nonlinear media, it is shown that results obtained from simultaneous use these yield valuable information on real imaginary components...

Three at a time: The wavelength dependence of nonlinear absorption and refraction peripherally nitrophenylethynyl-functionalized first-generation arylethynylruthenium dendrimer (see picture; dppe=1,2-bis(diphenylphosphanyl)ethane) was examined in the range 625–1500 nm by employing fs pulses. compound is strong two-photon absorber 600–800 an exceptional three-photon 1100–1200 nm. Multiphoton intense interest for variety potential applications, such as optical power limiting, data storage,...

Triphenylamine derivatives bridged by methylene units afford a near planar molecular platform in series of one dimer and two oligomers exhibiting increased structural rigidity compared to that their parent triphenylamines. This dendrimers show significantly enhanced two-photon absorptions are up 3-fold triphenylamines with similar size structure.