Reversible and Amplified Fluorescence Quenching of a Photochromic Polythiophene

Finden, Jeremy G.; Kunz, Tamara K.; Branda, Neil R.; Wolf, Michael O.

doi:10.1002/adma.200702455

Cited by 57 publications

(39 citation statements)

References 54 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…9c). Similar amplification of fluorescence photoswitching can be observed in other photoswitchable assembled systems such as silica NPs combined with DAEs 45 , P-dots containing DAEs 69 , and polymer systems [70][71][72] , but the quenching efficiency has been greatly enhanced by several orders of magnitude. Such a fascinating "giant amplification of fluorescence photoswitching" can be ascribed to a very efficient intermolecular FRET process between the fluorescent units and the closed-ring isomer of the DAE units within the NPs prepared exclusively from 9a (Fig.…”

Section: Nps Based On Organic Moleculessupporting

confidence: 68%

Photochromic fluorophores at the molecular and nanoparticle levels: fundamentals and applications of diarylethenes

2018

View full text Add to dashboard Cite

Fluorescent molecules and materials are widely used in many areas in physics, chemistry, and biology as emitters, tags, or sensors. The possibility of controlling their fluorescence signal by light, namely, fluorescence photoswitching, down to the nanoscale level can then dramatically extend their fields of applications. This review focuses on fluorescent and photochromic diarylethene-based nanosystems. The choice of the diarylethene family has been driven by its excellent photoswitching properties (conversion yield, bistability, fatigue resistance), which make them fully appropriate when high-performance behavior is required. The different molecular and nanomaterial designs providing suitable combinations of fluorescence and photochromism are summarized. Besides the inherently fluorescent diarylethene molecules, chemical association between photochromic and fluorescent molecular units can advantageously lead to fluorescence photoswitching thanks to resonance energy transfer or intramolecular electron transfer processes. Furthermore, the preparation of nanoscale emissive materials involving diarylethene units paves the way to new interesting features, such as near-infrared control of emissive and photoswitchable nanohybrids, giant amplification of the fluorescence photoswitching in organic nanoparticles, or fluorescence color modulation. Many applications derived from such fluorescent diarylethene-based molecules and nanomaterials have been developed recently, especially in the field of biology for fluorescence biolabeling and super-resolution imaging but also for photocontrol of biological functions. Extremely promising prospects are expected in the near future.

show abstract

Section: Nps Based On Organic Moleculessupporting

confidence: 68%

Photochromic fluorophores at the molecular and nanoparticle levels: fundamentals and applications of diarylethenes

2018

View full text Add to dashboard Cite

show abstract

“…[77,78] Alternatively, independent fluorescent and photochromic components can be integrated within [79][80][81] or appended to [82] the main chain of a polymer backbone. Similarly, several photochromes can be attached to a single fluorescent polymer [83,84] or a fluorophore can first be connected to a photochrome and then multiple copies of the resulting dyad can be attached to a macromolecular chain. [85] For example, the co-polymer 16a ( Figure 13) bears pendant fluorophore-photochrome dyads along its macromolecular backbone in addition to hydrophilic polyethylene glycol chains.…”

Section: Polymersmentioning

confidence: 99%

Fluorescent Switches Based on Photochromic Compounds

2009

View full text Add to dashboard Cite

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]

show abstract

“…The design of an effective light-triggered fluorescence switch is not trivial, and a zoology of diarylethene molecules [35,[134][135][136][137][138][139][140][141][142][143][144][145] and polymers [35,36,[146][147][148] have been reported so far. The main issue deals with the enhancement of the quantum yield of fluorescence of the emissive state, but maintaining overall good photochromism.…”

Section: Modulation Of Emission Propertiesmentioning

confidence: 99%

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

Bianco

Perissinotto

Garbugli

et al. 2011

Laser & Photonics Reviews

View full text Add to dashboard Cite

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

show abstract

Reversible and Amplified Fluorescence Quenching of a Photochromic Polythiophene

Cited by 57 publications

References 54 publications

Photochromic fluorophores at the molecular and nanoparticle levels: fundamentals and applications of diarylethenes

Photochromic fluorophores at the molecular and nanoparticle levels: fundamentals and applications of diarylethenes

Fluorescent Switches Based on Photochromic Compounds

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

Contact Info

Product

Resources

About