Efficient “turn-off” fluorescence photoswitching in a highly fluorescent diarylethene single crystal

Abstract

Efficient “turn-off” fluorescence photoswitching with full reversibility was successfully demonstrated in a fluorescent diarylethene single crystal.

Aggregation-induced emission effect on turn-off fluorescent switching of a photochromic diarylethene

“…This is attributed to the degree of condensation which is much higher in the crystalline state. The mechanism of the fast quenching is expected to be related to the amplification of photo-switching of a photochromic organic nanoparticle system as well as the crystalline system reported by Fukaminato and co-workers [29–30]. A detailed study of the amplification will be carried out in the future.…”

“…6 and Fig. 7) [29–30]. The emission from the aggregates quenched much faster than the solution (Fig.…”

Photoswitchable Fluorescent Self‐Assembled Metallacycles with High Photostability

“…One intriguing way to engineer a photoswitchable fluorescent system is to covalently connect both photochromic unit(s) and fluorescent chromophore(s) in one molecule [4] . The fluorescence of the molecule can be reversibly switched “on” or “off” by energy or electron transfer during the reversible photoisomerization of the photochromic unit upon alternative light irradiation [5] . Diarylethenes have emerged as an outstanding photochromic platform among the photochromic compounds because of their high thermal stability of both the open‐form and closed‐form isomers and the efficient photoconversion between the two isomers [6] .…”

“…[4] The fluorescenceo fthe molecule can be reversibly switched" on" or "off"b ye nergy or electron transfer during the reversible photoisomerization of the photochromicu nit upon alternative light irradiation. [5] Diarylethenes have emerged as an outstand-ing photochromic platform among the photochromic compounds because of their high thermal stabilityo fb oth the open-form and closed-form isomersa nd the efficient photoconversion between the two isomers. [6] The molecule designi s versatile and allows the construction of different kindso fp hotoswitchable fluorescent systems with good photostability.A notherm ethod is to develop unique closed-form isomersw ith intrinsicf luorescencev ia delicate molecular design.…”

High response photochromic films based on D–A diarylethenes and their application in holography

“…Nowadays, photochromic materials are considered in a broad perspective as light switches of microscopic and macroscopic properties. The modulation and control of uorescence are widely studied [1][2][3][4] for their potential use in high-resolution microscopy; 5,6 the mechanical effect has also been highlighted [7][8][9] and other examples include the use of photochromic molecules in photopharmacology and to trigger specic functions in biological systems. 10,11 In spite of such broader application spectrum, the optical eld remains a key one where photochromic systems are valuable.…”