216864-70-9

Upstream product

• 154566-75-3 1,2-bis(5'-formyl-2'-methylthien-3'-yl)perfluorocyclopentene 

Downstream Products

• 931204-40-9 C₂₄H₁₆Br₂F₆O₃S₂ 

Relevant academic research and scientific papers

Diarylethene-based photochromic polyurethanes for multistate optical memories

Photochromic polyurethanes (PPUs) are synthesised by reaction between a diarylethene end-capped with hydroxyl groups and an aliphatic diisocyanate. In situ polymerisation provides amorphous films with remarkable optical properties. The possibility to vary the amount and the chemical structure of the photochromic monomer without affecting the reactivity of the polymerization allows one to tune in a wide range the optical properties of these films. In addition, different diarylethenes can be mixed together to give copolymers which may find application as photochromic layers for multistate optical memories. A setup for a non-destructive readout based on Raman signal is proposed.

Synthesis of new photochromic materials: Possible multiplexing devices?

Multistep syntheses of new photochromic systems derived from bis-thienylperfluorocyclopentenes are described. They are shown to be thermally stable, fatigue resistant and switch reversibly between colorless open forms and colored closed forms. The incredible stability of these reversible switches led to the attempts of incorporating thermotropic liquid crystalline nature. Polycatenar photochromic esters prepared seem to be mesogenic and thus may form the very first example of liquid crystals with Z-configuration.

Multi-addressable supramolecular gels based on linear amino acid and bisthienylcyclopentene

1,2-Bisthienylperfluorocyclopentenes covalently linked to two aggregative side-arms derived from 11-aminoundecanoic acid have been designed to self-assemble leading to the formation of supramolecular gels which could be reversibly and independently reveal

Dynamic photoswitching of helical inversion in liquid crystals containing photoresponsive axially chiral dopants

Chirality switching is intriguing for the dynamic control of the electronic and optical properties in nanoscale materials. The ability to photochemically switch the chirality in liquid crystals (LCs) is especially attractive given their potential applications in electro-optic displays, optical data storage, and the asymmetric synthesis of organic molecules and polymers. Here, we present a dynamic photoswitching of the helical inversion in chiral nematic LCs (N*-LCs) that contain photoresponsive axially chiral dopants. Novel photoresponsive chiral dithienylethene derivatives bearing two axially chiral binaphthyl moieties are synthesized. The dihedral angle of the binaphthyl rings changes via the photoisomerization between the open and closed forms of the dithienylethene moiety. The N*-LCs induced by the dithienylethene derivatives that are used as chiral dopants exhibit reversible photoswitching behaviors, including a helical inversion in the N*-LC and a phase transition between the N*-LC and the nematic LC. The present compounds are the first chiral dopants that induce a helical inversion in N*-LC via the photoisomerization between open and closed forms of the dithienylethene moiety.

3,3,4,4,5,5-hexafluoro-1,2-bis(5-hydroxymethyl-2-methyl-3-thienyl) -cyclopent-1-ene

The title compound, C17H14F6O 2S2, a photochromic diarylethene, is one of the most promising materials for optical memories and other optoelectronic devices. The hexafluoro-cyclopentene group and the two thiophene rings are all planar, and the dihedral angles between the cyclopentene ring and the adjacent thiophene rings are 46.4 (1) and 49.5 (1)°.

Diarylethene compound, preparation and applications thereof

The invention relates to a diarylethene compound, preparation and applications thereof, and specificallydiscloses a compound represented by a formula (A), wherein various groups are defined in the specification. According to the invention, the compound is an excellent photochromic compound, and can be subjected to a photoisomerization reaction under the irradiation of light with specific wavelength to generate a ring-closing compound; and the compound and the photoisomerized ring-closing derivative thereof have high activity on agricultural and forestry pests such as aphids, aedes albopictus larvae of NematoceraCulicidae, and the like, and the activity of the ring-closing compound after illumination is higher than the activity of the ring-opening compound before illumination.

Diarylethene type photochromic insecticidal compound and preparation method and purpose thereof

The invention relates to a diarylethene type photochromic insecticidal compound and a preparation method and a purpose thereof. Specifically, the invention discloses a compound as shown in formula (A) or an optical isomer or a cis-trans-isomer thereof, or an agricultural pharmaceutically acceptable salt, and the definitions of substituent groups are as stated in the description. The invention also discloses the preparation method and the purpose of the compound. The formula (A) is shown in the description.

Photochromic thiopheneglyoxylic luen cholic acid water-soluble symmetrical entire fluorine link pentene compound, preparation method and application

The invention discloses a photochromic thiophene-linked cholic acid water-soluble symmetrical perfluorocyclopentene compound and a preparation method and application of the compound. The photochromic material can keep good photochromic property in a solution or a thin film and has fluorescence in the range of 350-550nm in an open-loop state; and furthermore, as the ultraviolet irradiation time is prolonged, the strength of a fluorescence emission spectrum is reduced. Thus, the photochromic material can be used for fluorescence detection and fluorescence light control switching; and compared with a symmetrical thiophene or benzothiophene type perfluorocyclopentene material, the compound has the advantages that the cost of the preparation materials is relatively low and the application prospects are relatively great.

WATER-SOLUBLE PHOTOCHROMIC MOLECULE

A diarylethene compound having high water-solubility is provided, and the compound is a diarylethene compound of formula (I) wherein, Sg is a monovalent sugar-type residue consisting of a sugar-type compound (in which some of hydroxyl groups may be protected) selected from a group consisting of a six-membered ring sugar, a five-membered ring sugar, cyclitol and oligosaccharides containing a six-membered ring sugar, a five-membered ring sugar, or cyclitol and excluding an hydroxyl group; U is -(CH2)n-, -CH2-U'-, or -C(=O)- (wherein, n is an integer of 1 to 5, U' is a C1-C10 alkyl group binding to Ar); and Ar is a group represented by formula (A1) or (A2); wherein, X is S, SO2, NR3 (R3 is a C1-C3 alkyl group) or O, R is C1-C4 alkyl group, R1 and R2 are independently a C1-C3 alkyl group, a is 0 or 1, b is an integer of 0-3, and * represents a bond with U); Y is a hydrogen atom or a halogen atom; m is an integer of 5-7.

Photoresponsive nanoassemblies of a dithienylethene organogelator

A 1,2-Bisdithienylperfluorocyclopentene covalently linked to aggregative gelling moieties based on a synthetic aminoacid unit have been synthesized. This rationnally designed molecular target lead to the spontaneous organisation of nanosized fibers which in turn form a 3D-network. The photoinduced ring-closure process involved in the photochromism of diarylethene suppresses the self-assembling properties. The system reversibly reverts back to the Gel state upon Visible irradiation.