Organic Materials for Third‐Order Nonlinear Optics

Nalwa, Hari Singh

doi:10.1002/adma.19930050504

Cited by 494 publications

(224 citation statements)

References 117 publications

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“…109,192,193 The presence of intrinsic anisotropic symmetry in the molecular structures can contribute to SHG. 192 A comprehensive overview of the organic materials with a third-order nonlinear relationship can be found elsewhere.…”

Section: Nir-absorbing Organic Materials: Dyes and Polymersmentioning

confidence: 99%

Revisiting the classification of NIR-absorbing/emitting nanomaterials for in vivo bioapplications

et al. 2016

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With the development of nonlinear optics and new imaging methods, near-infrared (NIR) light can excite contrast agents to probe biological specimens both functionally and structurally with a deeper imaging depth and a higher spatial resolution than linear optical approaches. There is considerable and growing interest in how biological specimens respond to NIR light. Moreover, the visible absorption band of most functional nanomaterials becomes NIR-excitable through multiphoton processes, thus allowing multifunctional imaging and combined therapy with noble metal and magnetic nanoparticles both in vitro and in vivo. A groundbreaking example is the use of different laser techniques to excite single-type NIR-absorbing/emitting nanomaterials to produce multiphoton emission by femtosecond lasers using either a remote control system for photodynamic therapy or photo-induced chemical bond dissociation. These techniques provided superior anatomical resolution and detection sensitivity for in vivo tumor-targeted imaging than those offered by conventional methods. Here we summarize the most recent progress in the development of smart NIR-absorbing/emitting nanomaterials for in vivo bioapplications.

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Section: Nir-absorbing Organic Materials: Dyes and Polymersmentioning

confidence: 99%

Revisiting the classification of NIR-absorbing/emitting nanomaterials for in vivo bioapplications

et al. 2016

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“…As for media with high cubic nonlinearity, one may rely on further progress in the area of synthesis of new nonlinear materials based on polymers with conjugated bonds where significant successes have been achieved in recent years (see, e.g., [10,11]). As can be easily shown, the strength of the electric field E 0 produced in the medium with cubic susceptibility χ (3) by a coherent superposition of two harmonics with approximately equal amplitudes E is given, to within an order of magnitude, by E 0 ∼ χ (3) E 3 .…”

Section: Numerical Estimatesmentioning

confidence: 99%

Fourier synthesization of optical pulses and “polar” light

Zapasskiĭ

Aleksandrov

2002

Opt. Spectrosc.

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It is shown that the direct Fourier synthesization of light beams allows one to create polarity-asymmetric waves, which are able, in the process of nonlinear interaction with a medium, to break its inversion symmetry. As a result, these "polar" waves may show the effect of optical rectification in nonlinear centrosymmetric media by generating light-induced dc electric polarization. At the same time, the waves of this type, due to their unusual symmetry properties, can be used for detecting the direction and sign of a dc electric field applied to the medium. The prospects of application of polar waves to data recording and processing are discussed.

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“…Now, presently available active anti-epileptic drugs like tiagabine, etizolam, brotizolam are containing thiophene moiety in their structures as active pharmacophore (Polivka et al, 1984;Noguchi et al, 2004). Thiophene-containing compounds are known as materials with potential applications in the flavor (Guentert et al, 2010) and pharmaceutical industries (Press, 1991), in conducting polymer design (Bloor, 1995), as well as in NLO materials (Nalwa, 1993). Thiophene derivatives are also often used as intermediates in a wide range of areas of synthetic chemistry.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and vibrational spectral (FT-IR, FT-Raman) studies, NLO properties & NBO analysis of (E)-N'(thiophen-2yl methylene)isonicotinohydrazide using quantum chemical method

Nathiya

Saleem

Bharani

et al. 2018

IJAC

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FT-IR (4000-400 cm-1) and FT-Raman (3500-50 cm-1) spectra of (E)-N'(thiophen-2yl methylene)isonicotinohydrazide (TMINH) molecule was recorded in solid phase. The optimized geometry was calculated by B3LYP method with 6-311++G(d,p) basis set. The harmonic vibrational frequencies, infrared (IR) intensities and Raman scattering activities of the title compound were performed at same level of theory. The complete vibrational assignments were performed on the basis of the Total energy distribution (TED) of the vibrational modes, calculated with scaled quantum mechanical (SQM) method. The calculated first hyperpolarizability may be attractive for further studies on non-linear optical (NLO) properties of material. Stability of the molecule arising from hyperconjugative interaction and charge delocalization was analyzed using natural bond orbital (NBO) analysis. Highest occupied molecular orbital-Lowest unoccupied molecular orbital (HOMO-LUMO) energy gap explains the eventual charge transfer interactions taking place within the title molecule. A study on the electronic properties, such as excitation energies and wavelengths, were performed by time-dependent (TD-DFT) approach. Molecular electrostatic potential (MEP) provides the information on the electrophilic, nucleophilic and free radical prone reactive sites of the molecule. The thermodynamic properties such as heat capacity, entropy and enthalpy of the title compound were calculated at different temperatures in gas phase. 1H and 13C-NMR chemical shifts of the molecule were calculated using Gauge-independent atomic orbital (GIAO) method.To establish information about the interactions between human cytochrome protein and this novel compound theoretically, docking studies were carried out using Schrödinger software.

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Organic Materials for Third‐Order Nonlinear Optics

Cited by 494 publications

References 117 publications

Revisiting the classification of NIR-absorbing/emitting nanomaterials for in vivo bioapplications

Revisiting the classification of NIR-absorbing/emitting nanomaterials for in vivo bioapplications

Fourier synthesization of optical pulses and “polar” light

Synthesis and vibrational spectral (FT-IR, FT-Raman) studies, NLO properties & NBO analysis of (E)-N'(thiophen-2yl methylene)isonicotinohydrazide using quantum chemical method

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