Ellipsometric determination of the electric-field-induced birefringence of photorefractive dyes in a liquid carbazole derivative

Hendrickx, Eric; Guenther, B. D.; Zhang, Y.; Wang, J.F.; Staub, K.; Zhang, Q.; Marder, Seth R.; Kippelen, Bernard; Peyghambarian, N.

doi:10.1016/s0301-0104(99)00049-x

Cited by 30 publications

(17 citation statements)

References 22 publications

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“…16 The orientational enhancement of the index modulation amplitude is proportional to 2 ⌬␣; due to their large dipole moments chromophores A and B have a 2 ⌬␣ value similar to that reported for 2-dihexylamino-7-dicyanomethylidene-3,4,4a,5,6-pentahydronaphthalene ͑DHADC-MPN, 9.8ϫ10 Ϫ57 esu at 690 nm, 5.7ϫ10 Ϫ57 esu at 830 nm͒, much larger than 2 ⌬␣ of DMNPAA (1.1 ϫ10 Ϫ57 esu at 690 nm͒. 17 The structures of DMNPAA and DHADC-MPN are also shown in Fig. 1.…”

Section: Chromophore Parameters and Complexationsupporting

confidence: 74%

Effect of the chromophore donor group and ferrocene doping on the dynamic range, gain, and phase shift in photorefractive polymers

Hendrickx

Steenwinckel

Persoons

et al. 2000

The Journal of Chemical Physics

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Diffraction efficiency and phase stability of poly (N-vinylcarbazole) -based photorefractive polymer composites as a function of azo-dye concentrationWe have studied the photorefractive performance of poly͑N-vinylcarbazole͒-based composites doped with various concentrations of two structurally related dipolar chromophores, at 780 nm. The two chromophores had different electron donor groups, N,N-diethylamine and julolidine, respectively. Complete internal diffraction and gain coefficients Ͼ130 cm Ϫ1 were obtained for polymers doped with these chromophores. The polymers prepared with the chromophore having the strongest electron donor group, the julolidine group, had the largest dynamic range, but proved to be slower and had a smaller photorefractive phase shift.

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Section: Chromophore Parameters and Complexationsupporting

confidence: 74%

Effect of the chromophore donor group and ferrocene doping on the dynamic range, gain, and phase shift in photorefractive polymers

Hendrickx

Steenwinckel

Persoons

et al. 2000

The Journal of Chemical Physics

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“…Herein, we describe the first report on the development of fluorescent π‐conjugated liquid based on N‐heteroacene framework. Unlike fluorescent π‐conjugated liquids such as anthrathene, carbazole, and OPV derivatives reported by some groups,,,, N‐heteroacene‐based π‐conjugated liquid itself can show various fluorescent colors by responding to external stimuli as proton. N‐Heteroacene, in which some electron‐deficient imino‐N atoms is substituted instead of C atoms in a polyaromatic hydrocarbon, has much attracted attentions as electron acceptors and n‐type semiconductors .…”

Section: Figurementioning

confidence: 99%

Fluorescent N‐Heteroacene‐Based π‐Conjugated Liquid Responsive to HCl Vapor

2017

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In this paper, we describe here the first room temperature π‐conjugated liquid based on N‐heteroacene framework showing a fluorescent property. This π‐conjugated liquid N‐heteroacene molecule is composed of branched‐long alkoxy chains and thiophene moieties. Also, N‐heteroacene‐based liquid itself can function as a stimuli‐responsive photofunctional material unlike room temperature π‐conjugated liquids reported previously. When a coated film prepared from this liquid was exposed to HCl vapor, an adsorption of HCl molecules occurred accompanied to the change in color of film from yellow to deep yellow. Moreover, emission colors of a coated film markedly changed from blue to yellow. This result indicates that this π‐conjugated liquid N‐heteroacene can function as stimuli‐responsive functional material.

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“…Later, a dramatic reduction of the T m of anthracene ( Anth1–Anth5 ) and p ‐terphenyl ( Tph1–Tph7 ) was found upon the addition of alkyl or vinyl substituents in 1980 (Figure c,d), followed by the discovery of liquid 9‐alkylfluorenes and 9,9‐dialkylfluorenes in 1989 . Since then, there has been a fast expansion of fluorene and carbazole liquids (Figure e,f) owing to their capability to form fusible, soluble, and processible conducting polymers, dissolve photorefractive dyes, and plasticize photorefractive polymers . However, most of the abovementioned publications focused on synthetic strategies and physical features ( T m , viscosity, and density) of the liquid products.…”

Section: The History Of Lmlsmentioning

confidence: 99%

Solvent‐Free Luminous Molecular Liquids

Nakanishi

2019

Advanced Optical Materials

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Solvent‐free luminous molecular liquids (LMLs) are a new generation of soft matter which exhibit uncharged, nonvolatile, and fluidic nature and emit intense and homogeneous luminescence in the condensed state. They can be produced readily on the gram scale by modifying luminophores with bulky, flexible, and low‐melting side chains. Their performance can be facilely enriched by blending them with commercially available functional substances. Therefore, since their active optoelectronic properties were perceived a decade ago, LMLs have been regarded as promising contributing components in the burgeoning field of flexible and wearable light‐emitting devices. Recently, richer insights into LMLs have triggered various new applications. Additionally, unexpected phase behavior and photophysical properties have been discovered coincidentally. Therefore, the sensible and sophisticated molecular design principles of LMLs are still being augmented to guarantee predictable, steady, and consistent end‐use performance. This review summarizes the latest developments in LMLs, including molecular design principles, regulation and enrichment of their photophysical properties, and their versatile applications. Additionally, a prediction of the perspectives of LMLs in the near future is presented at the end.

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Ellipsometric determination of the electric-field-induced birefringence of photorefractive dyes in a liquid carbazole derivative

Cited by 30 publications

References 22 publications

Effect of the chromophore donor group and ferrocene doping on the dynamic range, gain, and phase shift in photorefractive polymers

Effect of the chromophore donor group and ferrocene doping on the dynamic range, gain, and phase shift in photorefractive polymers

Fluorescent N‐Heteroacene‐Based π‐Conjugated Liquid Responsive to HCl Vapor

Solvent‐Free Luminous Molecular Liquids

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