219537-99-2

Upstream product

• 68-12-2 N,N-dimethyl-formamide 
• 219537-97-0 1,2-bis(5-chloro-2-methylthien-3-yl)cyclopent-1-ene 
• 110-94-1 1,5-pentanedioic acid 
• 219537-95-8 1,5‐bis(5‐chloro‐2‐methylthiophen‐3‐yl)pentane‐1,5‐dione 
• 17249-82-0 2-chloro-5-methylthiophene 
• 554-14-3 2-Methylthiophene 
• 2873-74-7 gloutaric dichloride 

Downstream Products

• 1310716-04-1 C₂₉H₂₄Br₂N₂S₂ 
• 1310716-01-8 C₂₉H₂₄Cl₂N₂S₂ 
• 1310715-99-1 C₂₉H₂₆N₂S₂ 
• 1310716-03-0 C₂₉H₂₄I₂N₂S₂ 

Relevant academic research and scientific papers

A photochromic prototype based on difurylperhydrocyclopentene with remarkable photoswitching behavior and: In vivo application

A new strategy has been developed to synthesize difurylperhydrocyclopentene derivatives. The compound displays reversible photochromism in solution and thin-film. The results show that furan is superior to thiophene in terms of strong fluorescence, higher photocyclization conversion and cyclization quantum yield, as well as better fatigue resistance. Owing to the molecule being derived absolutely from C, H, and O atoms, the compound exhibits no cytotoxicity, which enables it to potentially serve as a biodegradable and biorenewable material for in vivo applications.

Photo-induced morphology transition of a multifunctional photochromic bisthienylethene molecule with switchable aggregation-induced emission

A novel multifunctional molecule BTE-CNPH was designed and synthesized by connecting 2-(3′,5′-bis(trifluoromethyl)-biphenyl-4-yl)-2-cyanovinyl group to both side of the bisthienylethene (BTE), which exhibited excellent aggregation-induced emission (AIE) and bistable photochromism. High-contrast (>60) reversible fluorescence switching was achieved in the 1D nanowires, solid of BTE-CNPH and also in a polymethyl methacrylate (PMMA) film loaded with 1% BTE-CNPH under the alternative irradiation by 365 nm and visible light. Interestingly, the nanowire-like assembly morphology of BTE-CNPH in aqueous tetrahydrofuran (THF) solution of specific concentration was observed to translate into amorphous pieces gradually upon prolonged irradiation by the 365 nm, accompanying with photo-tunable AIE emission.

Aldehyde-substituted acceptor-DTE-acceptor-type dithienylethene as a versatile building block for near-infrared photochromic materials

A novel aldehyde-substituted acceptor-DTE-acceptor-type dithienylethene derivative, in which the difluoroboron β-diketonate and aldehyde groups at the termini of the dithienylethene function as electron acceptors, has been developed. The structure was con

Control of Imine Exchange Kinetics with Photoswitches to Modulate Self-Healing in Polysiloxane Networks by Light Illumination

Various aldehyde-containing photoswitches have been developed whose reactivity toward amines can be controlled externally. A thermally stable bifunctional diarylethene, which in its ring-closed form exhibits imine formation accelerated by one order of magnitude, was used as a photoswitchable crosslinker and mixed with a commercially available amino-functionalized polysiloxane to yield a rubbery material with viscoelastic and self-healing properties that can be reversibly tuned by irradiation.

A highly selective and sensitive photoswitchable fluorescent probe for Hg2+ based on bisthienylethene-rhodamine 6G dyad and for live cells imaging

A new photochromic diarylethene derivative bearing rhodamine 6G dimmer as a fluorescent molecular probe is designed and synthesized successfully. All the compounds are characterized by nuclear magnetic resonance and mass spectrometry. The bisthienylethene-rhodamine 6G dyad exhibit excellent phtochromism with reversibly color and fluorescence changes alternating irradiation with ultraviolet and visible light. Upon addition of Hg2+, its color changes from colorless to red and its fluorescence is remarkably enhanced. Whereas other ions including K+, Na+, Ca2+, Mg2+, Fe2+, Co2+, Ni2+, Cu 2+, Zn2+, Mn2+, Pb2+, Ni 2+, Fe3+, Al3+, Cr3+ and so on induce basically no spectral changes, which constitute a highly selective and sensitive photoswitchable fluorescent probe toward Hg2+. Furthermore, by means of laser confocal scanning microscopy experiments, it is demonstrated that this probe can be applied for live cell imaging and monitoring Hg 2+ in living lung cancer cells with satisfying results, which shows its value of potential application in environmental and biological systems.

Synthesis and photochromic properties of fullerene C60 adducts with dithienylethenes

A number of adducts of C60 with dithienylethenes were synthesized for the first time using the Prato reaction and their photochromic properties studied. It was found that the positions of the absorption bands for the ring-closed forms of diaryl

Low-symmetry porphyrin analogues with flexible open-form dithienylethene moieties: Intense near IR Q bands

Two low-symmetry porphyrinoids with a dithienylethene (DTE) moiety incorporated into the core macrocycle, that contain either a CHO or a bridging methyl ether group, have been serendipitously synthesized through a Rothemund condensation reaction. X-ray crystal structures demonstrate that CHO and bridging methyl ether groups on the DTE moiety changes the conformation of the macrocycle and significantly influences the relative energies of the frontier orbitals of the porphyrinoid π-system and results in a remarkable enhancement and broadening of the Q bands in the 450–800 nm region compared to those of conventional tetrapyrrolic porphyrins. The introduction of a DTE moiety provides an effective strategy for achieving the intense near-infrared region absorption that is required for many of the practical applications of porphyrinoids, through a disruption of the macrocyclic π-system that is similar to that of naturally occurring corrins.

Synthesis and spectroscopic properties of BODIPY-dithienylethene conjugates

Two red fluorescent triads containing photochromic dithienylethene moiety linked to two 4,4-difluoro-4-bora-3a,4a-diaza-s-indacene (BODIPY) via acetylene bond, 1a or single bond, 1b were synthesized and characterized. Although no evident absorption and NMR spectra changes were observed upon irradiation with visible light, the absorption and fluorescence spectra of 1a and 1b are remarkably solvent dependent, in contrast to those of the reference BODIPY-thienyl compounds 2a and 2b, which are essentially solvent independent. Fluorescence intensities of 1a and 1b decreased as the solvent polarity increased, and the fluorescence decay showed two exponentials in polar solvents other than n-hexane. DFT calculations have been carried out to elucidate the spectral behavior of investigated compounds.

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.

Dithienylethene-bridged difluoroboron β-diketonate dyes: Optical switching behaviors and triple sensing for volatile amine vapors

Developing new visible light-triggered NIR photochromic sensors for the accurate detection of volatile amine vapors in the solid state is highly desirable. Herein, three novel dithienylethene-bridged difluoroboron β-diketonate dyes Di-BF2bdk-DT