Holographic Scattering in Centrosymmetric<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi>Na</mml:mi></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:mrow><mml:mo>[</mml:mo><mml:mi>Fe</mml:mi><mml:mo>(</mml:mo><mml:mi>CN</mml:mi><mml:mrow><mml:msub><mml:mrow><mml:mo>)</mml:mo></mml:mrow><mml:mrow><mml:mn>5</mml:mn></mml:mrow></mml:msub></mml:mrow><mml:mi>NO</mml:mi><mml:mo>]</mml:mo><mml:mi /><mml:mi>̇</mml:mi><mml:mi /><mml:m

Imlau, Mirco; Woike, Th.; Schieder, R.; Rupp, R. A.

doi:10.1103/physrevlett.82.2860

Cited by 51 publications

(37 citation statements)

References 12 publications

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“…In addition, we investigated the kinetics for the build-up of the scattering at low temperature, as it is connected to the number density of photoinduced linkage isomers. This remarkable transient behavior of the scattered light intensity is analogous to that found for SNP, [14] and has been successfully described on the basis of an optically bistable photosensitive material consisting of the two configurations M-NO and M-ON. [5] The scattering maximum represents the state where a spatial modulation of the number density of M-ON, that is, a spatial modulation of the refractive index change, reaches its maximum amplitude.…”

mentioning

confidence: 68%

“…2-containing compounds, [6][7][8]14] , by analyzing the macroscopic photorefractive properties with respect to the microscopic changes in the metal-nitrosyl bonding, we obtain an exciting result: Photorefraction is a general property of the light-induced linkage isomers in [ML 5 NO] m± compounds containing a nitrosyl ligand, independent of the metals M, the ligands L, or the charge m of the complex. The implications of this conclusion are far reaching.…”

Section: No]mentioning

confidence: 96%

“…[12,[20][21][22] Note that the photorefractive response is large, for example, up to Dn ≈ 10 -2 in SNP. [18] [14] we can estimate the refractive index change of the former ones to Dn ≈ 10 -3 -10 -4…”

Section: No]mentioning

confidence: 99%

“…[14] We find that photorefraction is independent of any specific ligand or cation/anion, so that we establish photorefraction as a general property resulting from the photoinduced nitrosyl-linkage isomers in this substance class. 4 (OH)NO] are photorefractive, that is, light exposure causes a change of the refractive index.…”

mentioning

confidence: 91%

“…For this purpose single crystals of the two representatives were exposed to an unexpanded coherent laser beam (wavelength, k = 458 nm). Around the directly transmitted pump beam a radially symmetrical intensity distribution (external apex angles h x,y ), called corona, [14] built up as a function of exposure at low tem-…”

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confidence: 99%

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Photoinduced Nitrosyl Linkage Isomers Uncover a Variety of Unconventional Photorefractive Media

et al. 2007

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The ongoing search for new photorefractive materials offering a high photosensitive flexibility is triggered by the limited tuning ability of conventional photorefractive materials, such as electro-optic crystals, photopolymers, or liquid crystals. One of the latest discovered photorefractive materials is Na 2 [Fe(CN) 5 NO] · 2H 2 O, in which metastable linkage isomers of the nitrosyl group can be generated by light irradiation resulting in huge changes of the refractive index up to Dn ∼ 10 -2 .Here we show that this type of photorefraction is a general property arising from the generation of linkage isomers and can thus be found in many compounds containing [ML 5 NO] m± complexes, where M is a transition metal, L a ligand, and m the formal charge of the anion/cation. The benefit of this generality is reflected in the tailoring properties of the photorefractive response such as the spectral sensitivity simply by selecting different representatives of the [ML 5 NO] m± compounds.Conventional photorefractive materials, [1] where the lightinduced modulation of the refractive index is caused by the linear electro-optic effect (Pockels effect), are widely applied in nonlinear optics.[2] They feature reversible photorefractivity without chemical processing allowing for dynamical holography, [3] and the kinetics of hologram formation is described by the well-known Kiev equations. [4] In recent years a second class of reversible photorefractive media for dynamical holography has been established, the unconventional photorefractive materials. Here an optical bistability is at the origin of photorefraction and the kinetics show a characteristic transient behavior.[5] The unique properties of this class were com-

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confidence: 68%

Section: No]mentioning

confidence: 96%

Section: No]mentioning

confidence: 99%

mentioning

confidence: 91%

mentioning

confidence: 99%

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Photoinduced Nitrosyl Linkage Isomers Uncover a Variety of Unconventional Photorefractive Media

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Solid‐State Interconversions: Unique 100 % Reversible Transformations between the Ground and Metastable States in Single‐Crystals of a Series of Nickel(II) Nitro Complexes

Warren

Easun

Brayshaw

et al. 2014

Chemistry A European J

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The solid-state, low-temperature linkage isomerism in a series of five square planar group 10 phosphino nitro complexes have been investigated by a combination of photocrystallographic experiments, Raman spectroscopy and computer modelling. The factors influencing the reversible solid-state interconversion between the nitro and nitrito structural isomers have also been investigated, providing insight into the dynamics of this process. The cis-[Ni(dcpe)(NO2)2] (1) and cis-[Ni(dppe)(NO2)2] (2) complexes show reversible 100 % interconversion between the η1-NO2 nitro isomer and the η1-ONO nitrito form when single-crystals are irradiated with 400 nm light at 100 K. Variable temperature photocrystallographic studies for these complexes established that the metastable nitrito isomer reverted to the ground-state nitro isomer at temperatures above 180 K. By comparison, the related trans complex [Ni(PCy3)2(NO2)2] (3) showed 82 % conversion under the same experimental conditions at 100 K. The level of conversion to the metastable nitrito isomers is further reduced when the nickel centre is replaced by palladium or platinum. Prolonged irradiation of the trans-[Pd(PCy3)2(NO2)2] (4) and trans-[Pt(PCy3)2(NO2)2] (5) with 400 nm light gives reversible conversions of 44 and 27 %, respectively, consistent with the slower kinetics associated with the heavier members of group 10. The mechanism of the interconversion has been investigated by theoretical calculations based on the model complex [Ni(dmpe)Cl(NO2)].

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Molecules in Motion: From Sub‐Nanoscale to Macroscale

Jin¹,

Rack²

2013

Israel Journal of Chemistry

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Ruthenium polypyridine complexes comprising sulfoxide ligands show dramatic photochromic behavior based on phototriggered S→O and O→S isomerization. Quantum yields of isomerization can be large, indicating that the excited‐state bond‐breaking and bond‐making reactions are efficient. Ultrafast transient absorption spectroscopy reveals both adiabatic and non‐adiabatic isomerization mechanisms. Incorporation of these complexes within polymer matrices leads to macroscopic bending of the polymer in an example of a direct transduction of photonic energy to mechanical energy.

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Holographic Scattering in CentrosymmetricNa2[Fe(CN)5NO]̇

Cited by 51 publications

References 12 publications

Photoinduced Nitrosyl Linkage Isomers Uncover a Variety of Unconventional Photorefractive Media

Photoinduced Nitrosyl Linkage Isomers Uncover a Variety of Unconventional Photorefractive Media

Solid‐State Interconversions: Unique 100 % Reversible Transformations between the Ground and Metastable States in Single‐Crystals of a Series of Nickel(II) Nitro Complexes

Molecules in Motion: From Sub‐Nanoscale to Macroscale

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