Photorefractive properties and applications of polymer composites and fully functionalized polymethacrylates

Eric Hendrickx; David Van Steenwinckel; Christiaan Engels; Elke Gubbelmans; Kurt Van den Broeck; David Beljonne; Jean Luc Brédas; Celest Samyn; André Persoons

doi:10.1016/S0928-4931(01)00354-X

Photorefractive properties and applications of polymer composites and fully functionalized polymethacrylates

Eric Hendrickx, David Van Steenwinckel, Christiaan Engels, Elke Gubbelmans, Kurt Van den Broeck, David Beljonne, Jean Luc Brédas, Celest Samyn, André Persoons^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

6 Scopus citations

Abstract

We have studied the photorefractive properties of (2,4,7-trinitro-9-fluorenylidene)malononitrile (TNFM) sensitized poly(N-vinyl-carbazole) (PVK)/N-ethylcarbazole (ECZ) polymer composites doped with two structurally related chromophores. Characterization included four-wave mixing experiments, two-beam coupling and photoconductivity measurements at a wavelength of 780 nm. At an applied field of 48 V/μm, we have observed complete internal diffraction and gain coefficients exceeding 120 cm^-1. A small alteration in the chromophore donor group substituents was used to tune the ionization potential of the dopant dye. This affected the grating build-up time and photorefractive phase shift. As an application, we demonstrate the operation of a photorefractive novelty filter using a 120-μm-thick sample. The performance of the polymer composites is compared to that of three newly synthesized polymethacrylates functionalized with carbazole, a dodecyl chain as an internal plasticizer and three different dyes. Here, we have observed net two-beam coupling gain and a diffraction efficiency of 60% at 58 V/μm.

Original language	English (US)
Article number	620
Pages (from-to)	25-35
Number of pages	11
Journal	Materials Science and Engineering C
Volume	18
Issue number	1-2
DOIs	https://doi.org/10.1016/S0928-4931(01)00354-X
State	Published - 2001
Externally published	Yes

Bibliographical note

Funding Information:
E.H. is a postdoctoral fellow and D.V.S. is a research assistant of the Fund for Scientific Research-Flanders (Belgium) (FWO). E.G. and C.E. are research fellows from the IWT. D.B. is a research fellow of the Belgian National Fund for Scientific Research (FNRS). This research was supported by research grants from the FWO (G.0308.96, 1.5.009.99), the University of Leuven (GOA/95/01), and the Belgian Government. The collaboration between the Universities of Leuven and Mons is conducted in the framework of the Belgian Federal Government Inter-University Attraction Pole-IUAP P4/11.

Keywords

Novelty filter
Photorefractive polymers
Real-time holography

ASJC Scopus subject areas

Bioengineering
Biomaterials

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10.1016/S0928-4931(01)00354-X

Cite this

Hendrickx, E., Van Steenwinckel, D., Engels, C., Gubbelmans, E., Van den Broeck, K., Beljonne, D., Brédas, J. L., Samyn, C., & Persoons, A. (2001). Photorefractive properties and applications of polymer composites and fully functionalized polymethacrylates. Materials Science and Engineering C, 18(1-2), 25-35. Article 620. https://doi.org/10.1016/S0928-4931(01)00354-X

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abstract = "We have studied the photorefractive properties of (2,4,7-trinitro-9-fluorenylidene)malononitrile (TNFM) sensitized poly(N-vinyl-carbazole) (PVK)/N-ethylcarbazole (ECZ) polymer composites doped with two structurally related chromophores. Characterization included four-wave mixing experiments, two-beam coupling and photoconductivity measurements at a wavelength of 780 nm. At an applied field of 48 V/μm, we have observed complete internal diffraction and gain coefficients exceeding 120 cm-1. A small alteration in the chromophore donor group substituents was used to tune the ionization potential of the dopant dye. This affected the grating build-up time and photorefractive phase shift. As an application, we demonstrate the operation of a photorefractive novelty filter using a 120-μm-thick sample. The performance of the polymer composites is compared to that of three newly synthesized polymethacrylates functionalized with carbazole, a dodecyl chain as an internal plasticizer and three different dyes. Here, we have observed net two-beam coupling gain and a diffraction efficiency of 60% at 58 V/μm.",

keywords = "Novelty filter, Photorefractive polymers, Real-time holography",

author = "Eric Hendrickx and {Van Steenwinckel}, David and Christiaan Engels and Elke Gubbelmans and {Van den Broeck}, Kurt and David Beljonne and Br{\'e}das, {Jean Luc} and Celest Samyn and Andr{\'e} Persoons",

note = "Funding Information: E.H. is a postdoctoral fellow and D.V.S. is a research assistant of the Fund for Scientific Research-Flanders (Belgium) (FWO). E.G. and C.E. are research fellows from the IWT. D.B. is a research fellow of the Belgian National Fund for Scientific Research (FNRS). This research was supported by research grants from the FWO (G.0308.96, 1.5.009.99), the University of Leuven (GOA/95/01), and the Belgian Government. The collaboration between the Universities of Leuven and Mons is conducted in the framework of the Belgian Federal Government Inter-University Attraction Pole-IUAP P4/11.",

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doi = "10.1016/S0928-4931(01)00354-X",

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AU - Hendrickx, Eric

AU - Van Steenwinckel, David

AU - Engels, Christiaan

AU - Gubbelmans, Elke

AU - Van den Broeck, Kurt

AU - Beljonne, David

AU - Brédas, Jean Luc

AU - Samyn, Celest

AU - Persoons, André

N1 - Funding Information: E.H. is a postdoctoral fellow and D.V.S. is a research assistant of the Fund for Scientific Research-Flanders (Belgium) (FWO). E.G. and C.E. are research fellows from the IWT. D.B. is a research fellow of the Belgian National Fund for Scientific Research (FNRS). This research was supported by research grants from the FWO (G.0308.96, 1.5.009.99), the University of Leuven (GOA/95/01), and the Belgian Government. The collaboration between the Universities of Leuven and Mons is conducted in the framework of the Belgian Federal Government Inter-University Attraction Pole-IUAP P4/11.

PY - 2001

Y1 - 2001

N2 - We have studied the photorefractive properties of (2,4,7-trinitro-9-fluorenylidene)malononitrile (TNFM) sensitized poly(N-vinyl-carbazole) (PVK)/N-ethylcarbazole (ECZ) polymer composites doped with two structurally related chromophores. Characterization included four-wave mixing experiments, two-beam coupling and photoconductivity measurements at a wavelength of 780 nm. At an applied field of 48 V/μm, we have observed complete internal diffraction and gain coefficients exceeding 120 cm-1. A small alteration in the chromophore donor group substituents was used to tune the ionization potential of the dopant dye. This affected the grating build-up time and photorefractive phase shift. As an application, we demonstrate the operation of a photorefractive novelty filter using a 120-μm-thick sample. The performance of the polymer composites is compared to that of three newly synthesized polymethacrylates functionalized with carbazole, a dodecyl chain as an internal plasticizer and three different dyes. Here, we have observed net two-beam coupling gain and a diffraction efficiency of 60% at 58 V/μm.

AB - We have studied the photorefractive properties of (2,4,7-trinitro-9-fluorenylidene)malononitrile (TNFM) sensitized poly(N-vinyl-carbazole) (PVK)/N-ethylcarbazole (ECZ) polymer composites doped with two structurally related chromophores. Characterization included four-wave mixing experiments, two-beam coupling and photoconductivity measurements at a wavelength of 780 nm. At an applied field of 48 V/μm, we have observed complete internal diffraction and gain coefficients exceeding 120 cm-1. A small alteration in the chromophore donor group substituents was used to tune the ionization potential of the dopant dye. This affected the grating build-up time and photorefractive phase shift. As an application, we demonstrate the operation of a photorefractive novelty filter using a 120-μm-thick sample. The performance of the polymer composites is compared to that of three newly synthesized polymethacrylates functionalized with carbazole, a dodecyl chain as an internal plasticizer and three different dyes. Here, we have observed net two-beam coupling gain and a diffraction efficiency of 60% at 58 V/μm.

KW - Novelty filter

KW - Photorefractive polymers

KW - Real-time holography

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U2 - 10.1016/S0928-4931(01)00354-X

DO - 10.1016/S0928-4931(01)00354-X

M3 - Article

AN - SCOPUS:0035577624

SN - 0928-4931

VL - 18

SP - 25

EP - 35

JO - Materials Science and Engineering C

JF - Materials Science and Engineering C

IS - 1-2

M1 - 620

ER -

Photorefractive properties and applications of polymer composites and fully functionalized polymethacrylates

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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