Effect of acid/base on the third-order optical nonlinearity of polypyrrole

Wang, Aijian; Zhao, Wei; Wang, Yu

doi:10.1016/j.molstruc.2015.06.073

Cited by 24 publications

(12 citation statements)

References 45 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In the PPy spectrum, it shows a strong peak at 280 nm and a broad absorption band in the range 400 -650 nm. The former is contributed to the π − π* interband transition, namely, transition from valence band to the conduction band of neutral state of PPy, which is indicative of the formation of PPy [10]. As for the broad absorption band, it reveals the take place of the polymerization [16].…”

Section: Linear Optical Absorption Analysismentioning

confidence: 97%

“…The total transmittance through the sample is recorded as a function of incident laser intensity at each z-position and analyzed using Z-scan theory. Conjugated polymersexhibit excellent NLO activities because of their extensive π electron delocalization and macrocyclic conjugate structure [10], so it was of tremendous interests to evaluate the optical nonlinearities of the PPy and its derivatives. The samples were prepared by dissolving 1.5 mg of PPy, PPy-1, PPy-2, PPy-3, PPy-4, and PPy-5 into 10 mL of DMSO, respectively, followed with 30 min of ultrasonic treatment.…”

Section: Nonlinear Optical Performancesmentioning

confidence: 99%

“…Because the solvent DMSO exhibits no nonlinear absorption under these experimental conditions, the observed nonlinear absorption must arise from the solutes. At the excitation wavelength, the pristine PPy exhibits clear saturable absorption process; that is, the total transmission increases as the sample moves to the higher irradiance at the focal point [10]. In contrast, valley-shaped curves indicate the occurrence of nonlinear absorption and optical limiting behaviors.…”

Section: Nonlinear Optical Performancesmentioning

confidence: 99%

“…In addition, PPy and its derivatives are promising materials for rechargeable batteries, high-capacity electrode, biosensors and immune sensors for its excellent properties, such as high conductivity, controllable chemical and electrochemical properties, good environmental stability and easy processability [9] [10]. Generally, PPy can be easily prepared by chemical and electrochemical methods.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Nonlinear Optical Properties of Novel Polypyrrole Derivatives Bearing Different Aromatic Segments

Zhao¹,

Wang²,

Wang³

2017

MSA

Self Cite

View full text Add to dashboard Cite

Polypyrrole (PPy) and its derivatives containing different aromatic segments were synthesized by the interfacial polymerization reaction using ammonium per sulfate as oxidant, and were characterized by using Fourier transform infrared, Ultraviolet/visible absorption, and Raman spectroscopic techniques. The third-order nonlinear optical properties of all samples were measured by using nanosecond Z-scan measurements at 532 nm. At the identical mass concentration of 0.15 mg•mL −1 , all PPy derivatives exhibited an obvious reverse saturable absorption performance, while the saturable absorption response was observed for PPy. In addition, significant differences in their nonlinear optical performances were observed, highlighting the influence on optical nonlinearity of the aromatic segments of conjugated polymers.

show abstract

Section: Linear Optical Absorption Analysismentioning

confidence: 97%

Section: Nonlinear Optical Performancesmentioning

confidence: 99%

Section: Nonlinear Optical Performancesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Nonlinear Optical Properties of Novel Polypyrrole Derivatives Bearing Different Aromatic Segments

Zhao¹,

Wang²,

Wang³

2017

MSA

Self Cite

View full text Add to dashboard Cite

show abstract

“…The mechanism of PPy formation was the redox polymerization that started from APS and cation-radical formation, followed by the coupling of the radicals as is shown in Scheme 1. [16][17][18] APS is one of the mostly used oxidizing agent, however, other chemicals, such as FeCl 3 , can also be used.…”

Section: Polymerization In Microchannel Reactor and In-bulk For Compamentioning

confidence: 99%

Continuous microfluidic fabrication of polypyrrole nanoparticles

2019

View full text Add to dashboard Cite

show abstract

Switching the Nonparametric Optical Nonlinearity of Tungsten Oxide by Electrical Modulation

Hou

Sun

et al. 2021

Advanced Optical Materials

View full text Add to dashboard Cite

This work shows the electrical switching of the nonparametric optical nonlinearity of tungsten oxide (WO3−x). The sign and magnitude of the effective nonlinear absorption coefficient (βeff) can be modulated via application of an external bias. With laser excitation at 1030 nm, WO3−x shows a relatively large saturable absorption (SA) under an applied voltage (VA) of −2.5 V, with βeff being as large as −632 cm GW−1, while reverse saturable absorption (RSA) is found for VA larger than −1.5 V. The electrical switching of the nonlinear optical (NLO) response is reproducible and durable. Both electrostatic and electrochemical dopings of WO3−x occur during VA variation, with SA resulting mainly from the electrochemical doping (the intercalation of H+ into the lattice of WO3−x). The wavelength‐dependent NLO performance of pristine WO3−x is attributed to competition between one‐photon absorption and two‐photon absorption, while the VA‐derived NLO response is correlated with variation in the band structure and its population. These results suggest a promising approach for the postsynthesis modulation of the NLO response and a potential device configuration for further optoelectric applications.

show abstract

Effect of acid/base on the third-order optical nonlinearity of polypyrrole

Cited by 24 publications

References 45 publications

Nonlinear Optical Properties of Novel Polypyrrole Derivatives Bearing Different Aromatic Segments

Nonlinear Optical Properties of Novel Polypyrrole Derivatives Bearing Different Aromatic Segments

Continuous microfluidic fabrication of polypyrrole nanoparticles

Switching the Nonparametric Optical Nonlinearity of Tungsten Oxide by Electrical Modulation

Contact Info

Product

Resources

About