Z-scan study of nonlinear absorption in novel lanthanide bis-phthalocyanines

Karpo, Alexey B.; Pushkarev, Victor E.; Krasovskiĭ, V. I.; Tomilova, Larisa G.

doi:10.1016/j.cplett.2012.10.036

Cited by 41 publications

(18 citation statements)

References 23 publications

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“…The best fit obtained in this case is shown as a dashed line in Figure 4. Previously, we considered these competitive mechanisms to be of singlet and triplet nature [16]. But presented study and conducted calculations showed that in case of bisphthalocyanines (radical form) one cannot neglect the influence of the BV absorption band when considering OL caused by intense laser illumination in the visible transparency region.…”

Section: Discussionmentioning

confidence: 96%

“…The detailed description of the utilized z-scan procedure can be found in [16]. For our measurements we utilized the second harmonic generation light of a Nd:YAG laser operated in TEM 00 mode with the pulse duration of 350 ps and the low repetition rate of 5 Hz.…”

Section: Methodsmentioning

confidence: 99%

“…The summarized information on the absorption spectrum can be found in our previous study [16]. The inset of Figure 1 shows the energy molecular orbital diagram which has been constructed in accordance with Refs.…”

Section: Introductionmentioning

confidence: 98%

“…Here we present a different approach in the consideration of the BV band impact on the manifestation of nonlinear absorption in bisPcs by the example of bis [9,10,16,17,23,24-octa-n-butylphthalocyaninato]dysprosium(III) which we designate for convenience as Bu Pc 2 Dy.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Influence of blue valence absorption band on nonlinear absorption in dysprosium bisphthalocyanine studied by open aperture z-scan

Karpo¹,

Zasedatelev²,

Pushkarev³

et al. 2013

Chemical Physics Letters

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Section: Discussionmentioning

confidence: 96%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Influence of blue valence absorption band on nonlinear absorption in dysprosium bisphthalocyanine studied by open aperture z-scan

Karpo¹,

Zasedatelev²,

Pushkarev³

et al. 2013

Chemical Physics Letters

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“…The Z-scan technique was shown to be an appropriated and powerful tool to investigate nonlinear properties and photophysical characteristics of organic molecules aiming at applications in photonic and photomedicine [27][28][29][30][31]. Combination of Z-scan measurements, UV-vis absorption and fluorescence spectroscopies have allowed to find contributions from radiative, internal conversion and intersystem crossing processes, which allow evaluating its potential for optical applications [30,31].…”

Section: Introductionmentioning

confidence: 99%

Influence of halogen atoms and protonation on the photophysical properties of sulfonated porphyrins

Boni

Monteiro

Mendonça

et al. 2015

Chemical Physics Letters

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First Example of Nonlinear Optical Materials Based on Nanoconjugates of Sandwich Phthalocyanines with Quantum Dots

Oluwole

Yagodin

Mkhize

et al. 2017

Chemistry A European J

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We report original, selective, and efficient approaches to novel nonlinear optical (NLO) materials, namely homoleptic double- and triple-decker europium(III) complexes 2 and 3 with the A B-type phthalocyanine ligand (2,3-bis[2'-(2''-hydroxyethoxy)ethoxy]-9,10,16,17,23,24-hexa-n-butoxyphthalocyanine 1) bearing two anchoring diethyleneglycol chains terminated with OH groups. Their covalently linked nanoconjugates with mercaptosuccinic acid-capped ternary CdSeTe/CdTeS/ZnSeS quantum dots are prepared in the presence of an ethyl(dimethylaminopropyl)carbodiimide activating agent. Optical limiting (OL) properties of the obtained low-symmetry complexes and their conjugates with quantum dots (QDs) are measured for the first time by the open-aperture Z-scan technique (532 nm laser and pulse rate of 10 ns). For comparison, symmetrical double- and triple-decker Eu octa-n-butoxyphthalocyaninates 5 and 6 and their mixtures with trioctylphosphine oxide-capped QDs are also synthesized and studied. It is revealed that both lowering of molecular symmetry and expansion of the π-electron system upon moving from double- to triple-decker complexes significantly improves the OL characteristics, making the low-symmetry triple-decker complex 3 the most efficient optical limiter in the studied family of sandwich complexes, affording 50 % lowering of light transmittance below 0.5 J cm input fluence. Conjugation (both covalent and noncovalent) with QDs affords further enhancement of the OL properties of both double- and triple-decker complexes. Altogether, the obtained results contribute to the development of novel nonlinear optical materials for future nanoelectronic and optical device applications.

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Z-scan study of nonlinear absorption in novel lanthanide bis-phthalocyanines

Cited by 41 publications

References 23 publications

Influence of blue valence absorption band on nonlinear absorption in dysprosium bisphthalocyanine studied by open aperture z-scan

Influence of blue valence absorption band on nonlinear absorption in dysprosium bisphthalocyanine studied by open aperture z-scan

Influence of halogen atoms and protonation on the photophysical properties of sulfonated porphyrins

First Example of Nonlinear Optical Materials Based on Nanoconjugates of Sandwich Phthalocyanines with Quantum Dots

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