Preparation and nonlinear optical response of novel palladium-containing micellar nanohybrids

Iliopoulos, Konstantinos; Chatzikyriakos, G.; Demetriou, Maria; Krasia‐Christoforou, Theodora; Couris, Stelios

doi:10.1016/j.optmat.2011.03.030

Cited by 13 publications

(9 citation statements)

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“…Though the SPR of transition metal nanoparticles is located in the ultraviolet range, the NLO response cannot be resonantly enhanced, but instead, it can be influenced by other nonlinear processes. Pd and Pt nanoparticles have also been found to exhibit interesting nonlinear optical properties such as two-photon or multiphoton processes [46][47][48][49], RSA [50] and SA [13,[51][52][53]. Correspondingly, Pt nanoparticles can be used in optical limiting [50,53,54] and mode locking [52,53].…”

Section: Nonlinear Optical Studies Of Pd and Ptmentioning

confidence: 99%

Nonlinear Optical Response of Noble Metal Nanoparticles

Gao¹,

Kong²

2019

Laser Technology and Its Applications

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The special nonlinear optical response of noble metal nanoparticles (MNPs) when exposed to intense laser radiation has induced novel applications in nonlinear spectroscopy, optoelectronics, and optical switchers and limiters. In this chapter, recent results on the nonlinear optical properties of MNPs (including gold, silver, palladium, and platinum) have been discussed. Some specific optical nonlinear properties, such as nonlinear refraction, saturable absorption and reverse saturable absorption, two-photon absorption, and optical limiting, for femtosecond, picosecond, and nanosecond laser pulses, have been covered.

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Section: Nonlinear Optical Studies Of Pd and Ptmentioning

confidence: 99%

Nonlinear Optical Response of Noble Metal Nanoparticles

Gao¹,

Kong²

2019

Laser Technology and Its Applications

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“…the molar ratio of the vinyl pyridine units to the palladium salt was 18:1 and 38:1. The Pd-containing LauMA x -b-AEMA y micellar hybrids have been prepared in n -hexane by following a previously reported methodology [ 20 , 22 ]. Exemplarily, the procedure followed for the synthesis of the LauMA 120 -b-AEMA 67 /Pd micellar nanohybrids is described as follows: LauMA 120 -b-AEMA 67 (20 mg, 0.03 mmoles of AEMA units) was dissolved in n -hexane (5 mL).…”

Section: Fabrication Characterization and Measurementsmentioning

confidence: 99%

“…The stabilization temperature of LauMA x -b-AEMA y and PVP polymers is around 200 °C and 400 °C respectively [ 19 ]. The synthesis and characterization of the aforementioned polymer-stabilized Pd NPs has been reported in other studies [ 20 – 23 ]; however, in this work these polymer-metal nanohybrids have been employed for the growth of CNFs. The use of such catalyst-containing solutions is advantageous since those are nontoxic, cheap and can be easily prepared using low-cost wet-chemistry procedures.…”

Section: Introductionmentioning

confidence: 99%

Low temperature and cost-effective growth of vertically aligned carbon nanofibers using spin-coated polymer-stabilized palladium nanocatalysts

Saleem

Shafiee²,

Krasia‐Christoforou

et al. 2015

Science and Technology of Advanced Materials

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We describe a fast and cost-effective process for the growth of carbon nanofibers (CNFs) at a temperature compatible with complementary metal oxide semiconductor technology, using highly stable polymer–Pd nanohybrid colloidal solutions of palladium catalyst nanoparticles (NPs). Two polymer–Pd nanohybrids, namely poly(lauryl methacrylate)-block-poly((2-acetoacetoxy)ethyl methacrylate)/Pd (LauMAx-b-AEMAy/Pd) and polyvinylpyrrolidone/Pd were prepared in organic solvents and spin-coated onto silicon substrates. Subsequently, vertically aligned CNFs were grown on these NPs by plasma enhanced chemical vapor deposition at different temperatures. The electrical properties of the grown CNFs were evaluated using an electrochemical method, commonly used for the characterization of supercapacitors. The results show that the polymer–Pd nanohybrid solutions offer the optimum size range of palladium catalyst NPs enabling the growth of CNFs at temperatures as low as 350 °C. Furthermore, the CNFs grown at such a low temperature are vertically aligned similar to the CNFs grown at 550 °C. Finally the capacitive behavior of these CNFs was similar to that of the CNFs grown at high temperature assuring the same electrical properties thus enabling their usage in different applications such as on-chip capacitors, interconnects, thermal heat sink and energy storage solutions.

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“…Block copolymer-mediated self-assembly of MNP leads to advanced hybrid materials, since it promotes the confinement of metallic compounds within well-defined nanostructured domains, providing control of their size and shape (Grubbs 2005;Grubbs 2007). It has been demonstrated by us and other groups that the NLO properties of such materials depend not only on the size and geometrical characteristics of the metal nanoparticles but also on the nature of the polymeric templates used as stabilizers for the formation of the nanocomposites in solution (West et al 2003;Iliopoulos et al 2011;Papagiannouli et al 2014a;Papagiannouli et al 2014b).…”

Section: Optoelectronicsmentioning

confidence: 99%