Determination of the first hyperpolarizability of multiphoton fluorescent nonlinear optical chromophores via hyper-Rayleigh scattering using fluorescence quenching

1999 ◽  
Vol 245 (1-3) ◽  
pp. 73-78 ◽  
Author(s):  
Elmar Schmälzlin ◽  
Ursula Bitterer ◽  
Heinz Langhals ◽  
Christoph Bräuchle ◽  
Klaus Meerholz
Keyword(s):  
Fluorescence Quenching ◽  
Nonlinear Optical ◽  
Rayleigh Scattering ◽  
First Hyperpolarizability ◽  
Nonlinear Optical Chromophores ◽  
Optical Chromophores

FEMTOSECOND HYPER-RAYLEIGH SCATTERING STUDY OF SPATIAL ORIENTATIONAL CORRELATIONS BETWEEN CHROMOPHORES

1996 ◽  
Vol 05 (01) ◽  
pp. 59-71 ◽  
Author(s):  
K. CLAYS ◽  
M. WU ◽  
A. PERSOONS
Keyword(s):  
Nonlinear Optical ◽  
Rayleigh Scattering ◽  
First Hyperpolarizability ◽  
Solid Samples ◽  
Orientational Distribution ◽  
Local Deviation ◽  
Scattering Study ◽  
Nonlinear Optical Chromophores ◽  
Optical Chromophores ◽  
Orientational Distribution Function

Since the introduction of Hyper-Rayleigh scattering (HRS) as a measurement technique for the first hyperpolarizability of molecules in solution,1 the importance of fluctuations was realized.2 For isotropic solutions, a combination of the spatial and temporal orientational fluctuations causes the instantaneous and local deviation from macroscopic centrosymmetry, necessary to observe a second-order signal. The fluctuations in the spatial orientational distribution function of nonlinear optical chromophores cause an HRS signal that fluctuates as a function of position in solid samples. The correlation length, characterizing the decay of the autocorrelation function of this fluctuating signal, indicates the degree of spatial correlation between these chromophores. The development of femtosecond HRS was instrumental for the study of orientational correlations.3

Synthesis and Characterization of New Push-Pull Anthraquinones Bearing an Arylthienyl-Imidazo Conjugation Pathway as Efficient Nonlinear Optical Chromophores

2010 ◽  
Vol 636-637 ◽  
pp. 387-391 ◽  
Author(s):  
Rosa M.F. Batista ◽  
Susana P.G. Costa ◽  
Michael Belsley ◽  
M. Manuela M. Raposo
Keyword(s):  
Nonlinear Optical ◽  
Room Temperature ◽  
Rayleigh Scattering ◽  
Synthesis And Characterization ◽  
Excellent Thermal Stability ◽  
Nlo Properties ◽  
Nlo Materials ◽  
Nonlinear Optical Chromophores ◽  
Optical Chromophores

Compounds 1 were synthesized, in good to excellent yields (72-87%), through condensation of formyl-arylthiophene precursors 2 with 1,2-diaminoanthraquinone in ethanol at reflux, followed by cyclisation of the imine intermediate with Pb(OAc)4 in acetic acid at room temperature. Evaluation of the thermal, linear and NLO properties of these compounds was carried out. The  values of chromophores 1, measured by hyper-Rayleigh scattering (HRS) technique, are several times larger (49-67) than that of the standard reference molecule p-nitroaniline (pNA). Due to their excellent thermal stability, (Td = 341-446 oC), and good NLO properties, arylthienyl-imidazo-anthraquinones 1 could be used as new efficient and thermally stable NLO materials.

Rational Design Using Dewar’s Rules for Enhancing the First Hyperpolarizability of Nonlinear Optical Chromophores

2010 ◽  
Vol 114 (50) ◽  
pp. 22284-22288 ◽  
Author(s):  
Jane Hung ◽  
Wenkel Liang ◽  
Jingdong Luo ◽  
Zhengwei Shi ◽  
Alex K.-Y. Jen ◽  
...  
Keyword(s):  
Rational Design ◽  
Nonlinear Optical ◽  
First Hyperpolarizability ◽  
Nonlinear Optical Chromophores ◽  
Optical Chromophores

Comparison of nonlinear optical chromophores containing different conjugated electron-bridges: the relationship between molecular structure-properties and macroscopic electro-optic activities of materials

RSC Advances ◽  
2014 ◽  
Vol 4 (91) ◽  
pp. 49737-49744 ◽  
Author(s):  
Jieyun Wu ◽  
Hongyan Xiao ◽  
Ling Qiu ◽  
Zhen Zhen ◽  
Xinhou Liu ◽  
...  
Keyword(s):  
Molecular Structure ◽  
Nonlinear Optical ◽  
Molecular Shape ◽  
Simultaneous Optimization ◽  
First Hyperpolarizability ◽  
Electro Optic ◽  
Nonlinear Optical Chromophores ◽  
Optical Chromophores ◽  
The Relationship ◽  
Structure Properties

In electro-optic (EO) materials, realization of large EO coefficients for organic EO materials requires the simultaneous optimization of chromophore first hyperpolarizability, acentric order, molecular shape etc.

SECOND-ORDER NONLINEAR OPTICAL PROPERTIES OF CHROMOPHORE-COATED PARTICLES: SYMMETRY CONSIDERATIONS

2007 ◽  
Vol 16 (01) ◽  
pp. 27-35 ◽  
Author(s):  
KASPER BAERT ◽  
KURT WOSTYN ◽  
RENAUD A. L. VALLÉE ◽  
KOEN CLAYS
Keyword(s):  
Optical Properties ◽  
Nonlinear Optical ◽  
Rayleigh Scattering ◽  
Second Harmonic ◽  
Nonlinear Effects ◽  
Second Order ◽  
Nonlinear Optical Properties ◽  
Harmonic Intensity ◽  
Nonlinear Optical Chromophores ◽  
Optical Chromophores

The second-order nonlinear optical properties of polystyrene particles coated with two well-characterized nonlinear optical chromophores with different molecular symmetry have been studied. From the markedly different depolarization ratio for the hyper-Rayleigh scattering from the molecular scatterers and from the largely different second-harmonic intensity from particles coated with these chromophores, we conjecture that contributions from antisymmetric molecular electronic states are necessary to observe second-order nonlinear effects from centrosymmetrical particles in isotropic solution.

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