Third order optical nonlinearities of eight-β-octa-octyloxy-phthalocyanines

He, Chenjuan; Chen, Yu; Nie, Yonggang; Wang, Duoyuan

doi:10.1016/j.optcom.2006.10.020

Cited by 12 publications

(5 citation statements)

References 11 publications

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“…Further, the Q-band shows a well defined split in the case of ClNf whereas it is unsplit in the case of ClSNf. This is in agreement with earlier observations that the metal ion gets expelled from the molecule during its incorporation in Nafion, and it gets embedded in the free base form. , The split in the Q-band spectrum of ClNf shown here resembles that reported in the case of the free base of a very similar compound which was attributed to the lowering in symmetry . Bare solid Nafion contains hydrophilic/hydrophobic domains distributed in indistinguishable manner, at random.…”

Section: Resultssupporting

confidence: 92%

“…3,36 The split in the Q-band spectrum of ClNf shown here resembles that reported in the case of the free base of a very similar compound which was attributed to the lowering in symmetry. 37 Bare solid Nafion contains hydrophilic/hydrophobic domains distributed in indistinguishable manner, at random. When Nafion is immersed in dye solution, the ClAlPc is expected to localize in the hydrophobic clusters present in structural nanopores of the Nafion membrane.…”

Section: Resultsmentioning

confidence: 99%

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Nonlinear Refraction and Absorption Phenomena in a Novel Nanocomposite Based on a Dye Stabilized in a Solid Hybrid Matrix

Sathiyamoorthy

Vijayan

2008

J. Phys. Chem. C

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Nonlinear optical behavior of a novel nanocomposite material based on chloroaluminum phthalocyanine (ClAlPc) embedded in silica and incorporated in the structural nanopores of a Nafion membrane is investigated using the Z-scan technique. The experiments are performed at 532 nm using 8 ns pulses at a pulse repetition rate of 10 Hz from a frequency-doubled Nd:YAG laser. The nonlinearity in the hybrid membranes is characterized by obtaining the nonlinear refractive index and nonlinear absorption coefficient. Fluorescence lifetimes are measured using a time-correlated single photon counting technique. The effects of dynamic and static quenching on photostability are studied. Incorporating phthalocynanine molecules in the stable hybrid membrane renders them stable against photobleaching and provides a convenient solid matrix.

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Section: Resultssupporting

confidence: 92%

Section: Resultsmentioning

confidence: 99%

Nonlinear Refraction and Absorption Phenomena in a Novel Nanocomposite Based on a Dye Stabilized in a Solid Hybrid Matrix

Sathiyamoorthy

Vijayan

2008

J. Phys. Chem. C

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“…In fact, the variation of the central atom can introduce significant changes in the NLO behavior as far as OL is concerned. − This is especially true in the case of PcMXs with MX = VO, TiO, or InCl. ,,,, The reason for such variations is due to the ability of the central moieties, such as VO, TiO, or InCl, to introduce dipole moments perpendicularly oriented to the Pc ring with values in the order of 10–15 D, which alter the electronic structure of the macrocycle in both ground and excited states, and provoke new steric effects that modify the aggregation of PcMXs. , …”

Section: Phthalocyanines and Related Macrocyclesmentioning

confidence: 99%

Nonlinear Optical Materials for the Smart Filtering of Optical Radiation

2016

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The control of luminous radiation has extremely important implications for modern and future technologies as well as in medicine. In this Review, we detail chemical structures and their relevant photophysical features for various groups of materials, including organic dyes such as metalloporphyrins and metallophthalocyanines (and derivatives), other common organic materials, mixed metal complexes and clusters, fullerenes, dendrimeric nanocomposites, polymeric materials (organic and/or inorganic), inorganic semiconductors, and other nanoscopic materials, utilized or potentially useful for the realization of devices able to filter in a smart way an external radiation. The concept of smart is referred to the characteristic of those materials that are capable to filter the radiation in a dynamic way without the need of an ancillary system for the activation of the required transmission change. In particular, this Review gives emphasis to the nonlinear optical properties of photoactive materials for the function of optical power limiting. All known mechanisms of optical limiting have been analyzed and discussed for the different types of materials.

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“…[1][2][3] Among the organic based NLO materials concerned, phthalocyanines and their derivatives are attracting much more intensive research attention in the development of nonlinear optical materials because their highly delocalized π-electron conjugated macrocyclic systems can be highly polarized under a photovoltaic field and consequently result in large nonlinear optical responses with a fast response speed, low optical damage threshold, and a small dielectric constant. [4][5][6][7] After extensive studies conducted on simple monomeric phthalocyanine systems in the early stages, it is realized that improved optical nonlinearities of phthalocyanines can be achieved in phthalocyanine nanoparticles, 8 J-aggregates, 9 hybrid-glass composites, 10 mesogenic systems, 11 metallophthalocyanines, 12 octasubstituted metallophthalocyanines, 13 bis-phthalocyanines and so on. 5,14,15 Later on special attention was given to push-pull (asymmetrically) phthalocyanines where the conjugated π-electron system is separated/enhanced by different donor or acceptor groups.…”

Section: Introductionmentioning

confidence: 99%

Fabrication and notable optical nonlinearities of ultrathin composite films derived from water-soluble Keggin-type polyoxometalates and water-insoluble phthalocyanine

Shehzad

Zhou

et al. 2016

Dalton Trans.

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Composite films with the general formula (POM/CuTAPc) derived from water-soluble Keggin-type polyoxometalates (POMs = HPMoVO, HSiWO, HPMoO and HPWO) and water-insoluble 4,9,16,23-copper tetraaminophthalocyanine (denoted CuTAPc) are successfully fabricated by a layer-by-layer self-assembly technique and systematically characterized. The structure of the polyoxometalate anions in the multilayers is kept intact; the deposition amounts of POM and CuTAPc remain constant in every adsorption cycle of the composite film assembly process. The nonlinear optical properties of the composite films were studied by a Z-scan technique at a wavelength of 532 nm and a pulse width of 7 ns. The results not only show that the composite films exhibit notable optical nonlinear self-defocusing behavior and a saturated absorption effect with the nonlinear optical absorption co-efficient β, refractive index n, and third-order NLO susceptibility χ of the films increasing with the increase in number of layers of the films, but also reveal importantly that the discrepancy of LUMO levels between CuTAPc and POMs is proportional to their third-order NLO response.

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Third order optical nonlinearities of eight-β-octa-octyloxy-phthalocyanines

Cited by 12 publications

References 11 publications

Nonlinear Refraction and Absorption Phenomena in a Novel Nanocomposite Based on a Dye Stabilized in a Solid Hybrid Matrix

Nonlinear Refraction and Absorption Phenomena in a Novel Nanocomposite Based on a Dye Stabilized in a Solid Hybrid Matrix

Nonlinear Optical Materials for the Smart Filtering of Optical Radiation

Fabrication and notable optical nonlinearities of ultrathin composite films derived from water-soluble Keggin-type polyoxometalates and water-insoluble phthalocyanine

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