Novel photomemory effects in photochromic dye-doped conducting polymer and amorphous photochromic dye layer

Koshido, Takashi; Kawai, Tsuyoshi; Yoshino, Katsumi

doi:10.1016/0379-6779(95)80023-9

Cited by 48 publications

(16 citation statements)

References 6 publications

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“…Photochromic materials [5] have been proposed for applications in fluorescence quenching and sensing, [6] because of their ability to reversibly change their properties (i.e. color, refractive index, [7][8][9] dipole moment, [10] conductivity [11][12][13] ) under irradiation.…”

Section: Introductionmentioning

confidence: 99%

Optical Modulation of Amplified Emission in a Polyfluorene–Diarylethene Blend

et al. 2011

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A novel system for the modulation of amplified emission based on a polyfluorene/diarylethene (namely F8BT/DTP) blend is shown. The high sensitivity of amplified spontaneous emission (ASE) is exploited to achieve efficient emission modulation with a low-intensity control signal. Modulation is then characterized by photoluminescence (PL) lifetime measurements, photocurrent experiments, and density functional theory calculations. This system can also act as a photocurrent switch based on the same principle. This technique may represent a useful tool for fluorescence quenching and sensing as well as find application in organic photonics.

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Section: Introductionmentioning

confidence: 99%

Optical Modulation of Amplified Emission in a Polyfluorene–Diarylethene Blend

et al. 2011

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“…Indeed, similar effects have been also reproduced with diarylethene photochromes and appropriate luminescent partners. [69][70][71][72] The modulation of the emission of pyrene (b in Figure 9) by the spiropyran 14a (Figure 7) was achieved co-dissolving the fluorescent and photochromic compounds in the same solution.…”

Section: Modulation In Solutionmentioning

confidence: 99%

“…[72][73][74][75][76] The device configuration in Figure 11, for example, is composed of fluorescent and photochromic layers sandwiched between two quartz slides. Light source A sends a monochromatic radiation through the top quartz slide and the photochromic layer to the fluorescent layer.…”

Section: Modulation In Filmsmentioning

confidence: 99%

Fluorescent Switches Based on Photochromic Compounds

2009

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The photochemical transformations associated with photochromic compounds can be exploited to switch the emission of complementary fluorophores under the influence of optical stimulations. Specifically, fluorescent and photochromic components can be integrated within the same molecular or supramolecular assembly and the significant changes in the stereoelectronic properties associated with the photoinduced interconversion of one component can be designed to modulate the emission intensity and/or wavelength of the other. In particular, the modifications in absorption properties, conjugation, dipole moment, redox potentials and shape of a photochrome can all be transduced effectively into reversible alterations of the emissive behavior of a fluorophore. Furthermore, some of these ingenious mechanisms for fluorescence 1. Photochromism History and DefinitionsThe term "photochromism" was introduced in the early 1950s to indicate the photoinduced and reversible change in color of certain compounds.[1] Since then, the number of publications on photochromism has increased exponentially [a]

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“…Excitation of the fluorophore can also induce charge transfer to an acceptor moiety when the frontier orbitals transfer have been reported in the literature [155,157,158] and references therein. One of the first studies refers to a 1,2-dithienylperfluorocyclopentene substituted with a pyridinium to one side (namely the acceptor unit) and an anthracene (namely the donor, which is electronically decoupled from the photochromic moiety through a methylene) to the other side, which is shown in Fig.…”

Section: Figure 13mentioning

confidence: 99%

Control of optical properties through photochromism: a promising approach to photonics

Bianco

Perissinotto

Garbugli

et al. 2011

Laser & Photonics Reviews

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In this work studies on photochromism for optics and photonics are reviewed. The versatility of organic chemistry gives photochromic materials wide opportunities for several applications that range from tunable filters and gratings, to refractive-index modulators for optical fibers and communications, to optical memories and sensors. Moreover, novel results on efficient modulation of amplified emission in a conjugated polymer/photochromic system are presented. Credit for the background image (WR 25 and Tr16-244, open cluster Trumpler 16): NASA, ESA and Jesús Maíz Apellániz

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Novel photomemory effects in photochromic dye-doped conducting polymer and amorphous photochromic dye layer

Cited by 48 publications

References 6 publications

Optical Modulation of Amplified Emission in a Polyfluorene–Diarylethene Blend

Optical Modulation of Amplified Emission in a Polyfluorene–Diarylethene Blend

Fluorescent Switches Based on Photochromic Compounds

Control of optical properties through photochromism: a promising approach to photonics

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