348639-12-3

Upstream product

• 636600-99-2 1,2-bis(2-methyl-5-(4-(2,5-dioxolanyl)phenyl)thiophen-3-yl)hexafluorocyclopentene 
• 29421-73-6 3,5-dibromo-2-methylthiophene 
• 1122-91-4 4-bromo-benzaldehyde 
• 593260-88-9 1,2-bis(5'-dibutoxyboryl-2'-methylthien-3'-yl)perfluorocyclopentene 
• 222730-43-0 1,2-bis(5-chloro-2-methylthien-3-yl)perfluorocyclopent-1-ene 
• 559-40-0 octaperfluorocyclopentene 
• 550348-57-7 3-bromo-5-(4-(1,3-dioxolan-2-yl)phenyl)-2-methylthiophene 
• 1310404-98-8 2-(4-bromo-5-methylthiophen-2-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane 
• 554-14-3 2-Methylthiophene 
• 550348-56-6 4-(4-bromo-5-methylthiophen-2-yl)benzaldehyde 
• 154566-69-5 3-bromo-2-methylthiophene-5-boronic acid 
• 159590-08-6 3,3’-(perfluorocyclopent-1-ene-1,2-diyl)bis(2-methylthiophene) 
• 87199-17-5 4-formylphenylboronic acid, 
• 159590-16-6 3,3'-(perfluorocyclopent-1-ene-1,2-diyl)bis(5-bromo-2-methylthiophene) 

Downstream Products

• 1300037-27-7 C₃₃H₂₆F₆N₄S₂ 
• 210093-64-4 1,2-bis[2-methyl-5-(p-(hydroxymethyl)phenyl)-3-thienyl]hexafluorocyclopentene 
• 210093-65-5 1,2-bis(2-methyl-5-(4-bromobenzyl)thiophen-3-yl)hexafluorocyclopentene 
• 243971-25-7 1,2-bis(2-methyl-5-(4-carboxyphenyl)thiophen-3-yl)hexafluorocyclopentene 

Relevant academic research and scientific papers

Reversible photochemical control of cholesteric liquid crystals with a diamine-based diarylethene chiroptical switch

Upon addition of a chiral dopant to a nematic liquid crystal, amplification of molecular chirality can occur and consequently a cholesteric liquid crystal is formed. A major challenge in materials science consists in designing efficient chiral dopants tha

Loading Photochromic Molecules into a Luminescent Metal–Organic Framework for Information Anticounterfeiting

Stimuli-responsive photoluminescent materials have attracted considerable attention owing to their potential applications in security protection because the information recorded directly in materials with static luminescent outputs are usually visible under either ambient or UV light. Herein, we realize reversible information anticounterfeiting by loading a photoswitchable diarylethene derivative into a lanthanide metal–organic framework (MOF). Light triggers the open- and closed-form isomerization of the diarylethene unit, which respectively regulates the inactivation and activation of the photochromic FRET process between the diarylethene acceptor and lanthanide donor, resulting in reversible luminescence on–off switching of the lanthanide emitting center in the MOF host. This photoresponsive host–guest system allows for reversible multiple information pattern visible/invisible transformation by simply alternating the exposure to UV and visible light.

In Situ Photoconversion of Multicolor Luminescence and Pure White Light Emission Based on Carbon Dot-Supported Supramolecular Assembly

Constructing multicolor photoluminescence materials that allow for the integration of suitable external stimuli in order to control luminescence color conversions is a challenging objective. Multicolor luminescent output that is regulated in an in situ photo-controlled manner is not a common phenomenon. Herein, a photoluminescent supramolecular assembly, prepared in two stages, is described that displays in situ photo-tuning broad-spectrum output. Benefiting from the reversible photo-switched constitutional interconversion of diarylethenes, the fluorescence of a guest molecule, styrylpyridinium-modified diarylethene, can be switched on/off by alternating ultraviolet and visible light irradiation. Upon complexation of this guest with a host, cucurbit[8]uril, the fluorescence intensity of the resulting binary supramolecular nanofiber shows a drastic enhancement when compared with that of the free guest, which can also be quenched and recovered reversibly by light irradiation. Significantly, such cationic supramolecular nanofibers also interact with anionic carbon dots to form broad-spectrum output ternary supramolecular assemblies, the fluorescence of which can be changed efficiently from yellow to blue in an in situ photo-controlled manner. Pure white light emission can be realized expediently in the luminescence color-conversion process. The use of light as an external stimulus to regulate fluorescent color conversion provides us with an opportunity to design and construct more advanced anti-counterfeiting materials as well as visual display instruments.

Synthesis of symmetrical and nonsymmetrical bisthienylcyclopentenes

Diarylethenes possess unique structural properties, which enabled them to find widespread applications in the field of photochromism. Nowadays, bisthienylcyclopentenes (BTCs) present the most popular subfamily of these compounds, which are widely used as P-type chromophores. This minireview summarises the main strategies for the synthesis of symmetrical and nonsymmetrical BTCs. In addition, attention is drawn to desymmetrisations achieved by monosubstitutions, which is not frequently utilised, although it can be highly advantageous. This is supported with some of the authors' latest results. Copyright

An organic optical transistor operated under ambient conditions

It takes three: The key functionalities of an optical transistor, gating and amplification, are demonstrated exploiting the photophysical properties of a molecular triad (see picture). Two building blocks of the triad are highly efficient fluorophores, whereas the third building block is a photochromic molecule that can be reversibly interconverted between two bistable forms by light.

Bistable photoswitching in the film of fluorescent photochromic polymer: Enhanced fluorescence emission and its high contrast switching

The synthesis of aggregation-induced enhanced emission (AIEE)-based fluoroscent photochromic polymer, poly(DCS-BTE), whose strong fluorescence in the neat polymer film could photoswitched, was discussed. Polymeric film consisting of DCS in PMMA matrix were fabricated by spin-coating. Molecular planarization and J-type aggregation were observed in the DCS molecules gated by the specific intermolecular interactions in the solid state. The results show that the erasable fluorescence photoimaging on the spin-coated poly(DCS-BTE) film is successfully demonstrated.

Photochromism of Diarylethenes Linked by Hydrogen Bonds in the Single-Crystalline Phase

Photochromic diarylethenes, which bear carboxyl groups at the ortho, meta, or para positions of both terminal phenyl groups, have been synthesized. The diarylethenes adopt linear chain structures as a result of hydrogen bonding in the crystalline phase, a