Third-order optical non-linearity in Zn(II) complexes of 5,10,15,20-tetraarylethynyl-substituted porphyrins

Henari, Fryad Z.; Blau, Werner J.; Milgrom, Lionel R.; Yahioglu, Gökhan; Phillips, David; Lacey, Jackie A.

doi:10.1016/s0009-2614(97)00112-7

Cited by 139 publications

(58 citation statements)

References 9 publications

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“…It is clear that the value of σ ex is larger than the value of  g in all the polymers, which is in agreement with the condition for observing the reverse saturable absorption (Henari et al, 1997;Tutt & Boggess, 1993). Reverse saturable absorption generally arises in a molecular system when the excited state absorption cross section is larger than the ground state cross section.…”

Section: Polythiophenessupporting

confidence: 79%

“…13 is a fit of data to equation (1), by assuming only two-photon absorption (2PA). The normalized transmission for the open aperture condition (Henari et al, 1997) is given by,…”

Section: Polymers and Their Nanocompositesmentioning

confidence: 99%

“…The excited state cross section (σ ex ) can be measured from the normalized open aperture zscan data (Henari et al, 1997). It is assumed that the molecular energy levels can be reduced to a three level system in order to calculate σ ex .…”

Section: Polythiophenesmentioning

confidence: 99%

See 2 more Smart Citations

Donor-Acceptor Conjugated Polymers and Their Nanocomposites for Photonic Applications

Kumar¹,

Kiran²,

Murali³

et al. 2012

Nonlinear Optics

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Section: Polythiophenessupporting

confidence: 79%

“…13 is a fit of data to equation (1), by assuming only two-photon absorption (2PA). The normalized transmission for the open aperture condition (Henari et al, 1997) is given by,…”

Section: Polymers and Their Nanocompositesmentioning

confidence: 99%

See 1 more Smart Citation

Donor-Acceptor Conjugated Polymers and Their Nanocomposites for Photonic Applications

Kumar¹,

Kiran²,

Murali³

et al. 2012

Nonlinear Optics

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“…General molecular engineering trends relating the optical limiting performance of these compounds to their structural characteristics are also explored and discussed. addition, other materials such as fullerenes, [14±16] carbon nanotubes, [17±19] polymer/nanotube composites, [20,21] and porphyrins [22,23] have also been studied with a view to realization of practical optical limiting applications. This work summarizes a comprehensive study of experimentally measured optical limiting in substituted Pcs.…”

Section: Reviewmentioning

confidence: 99%

Molecular Engineering of Peripherally And Axially Modified Phthalocyanines for Optical Limiting and Nonlinear Optics

O’Flaherty¹,

Hold²,

Cook³

et al. 2003

Advanced Materials

328

194

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Phthalocyanines have remarkable chemical and thermal stability and offer tremendous architectural flexibility in their structure, facilitating the tailoring of physical, optoelectronic, and chemical parameters. In this paper, we summarize experimental measurements of nonlinear optical absorption in a comprehensive representative series of modified phthalocyanines substituted with various central metals and peripheral functional groups. Rate equations are used to analytically solve the static‐state conditions that simulate the excited‐state dynamics that result from the nonlinear excited‐state absorption, and this solution is fitted to the experimental data. General molecular engineering trends relating the optical limiting performance of these compounds to their structural characteristics are also explored and discussed.

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“…[3][4][5] As regards the role porphyrins play in biological systems, one could mention their participation in processes such as oxygen and electron transport. Moreover, chlorophyll ͑in green plants͒ and bacteriochlorophyll ͑in photosynthetic bacteria͒ molecules take part in the primary events of photosynthesis, absorbing light, and carrying the electronic excitation energy to the so called ''reaction center,'' where charge separation occurs involving a few special porphyrin molecules.…”

Section: Introductionmentioning

confidence: 99%

Theoretical study of the electronic spectrum of magnesium-porphyrin

Rubio

Roos

Serrano‐Andrés

et al. 1999

The Journal of Chemical Physics

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Multiconfigurational self-consistent field ͑SCF͒ and second order perturbation methods have been used to study the electronic spectrum of magnesium-porphyrin ͑MgP͒. An extended ANO-type basis set including polarization functions on all heavy atoms has been used. Four allowed singlet states of E 1u symmetry have been computed and in addition a number of forbidden transitions and a few triplet states. The results lead to a consistent interpretation of the electronic spectrum, where the Q band contains one transition, the B band two, and the N band one. The computed transition energies are consistently between 0.1 and 0.5 too low compared to the measured band maxima. The source of the discrepancy is the approximate treatment of dynamic correlation ͑second order perturbation theory͒, limitations in the basis set and the fact that all measurements have been made on substituted magnesium porphyrins.

show abstract

Third-order optical non-linearity in Zn(II) complexes of 5,10,15,20-tetraarylethynyl-substituted porphyrins

Cited by 139 publications

References 9 publications

Donor-Acceptor Conjugated Polymers and Their Nanocomposites for Photonic Applications

Donor-Acceptor Conjugated Polymers and Their Nanocomposites for Photonic Applications

Molecular Engineering of Peripherally And Axially Modified Phthalocyanines for Optical Limiting and Nonlinear Optics

Theoretical study of the electronic spectrum of magnesium-porphyrin

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