156686-75-8

Upstream product

• 29421-73-6 3,5-dibromo-2-methylthiophene 
• 104-92-7 1-bromo-4-methoxy-benzene 
• 154566-69-5 3-bromo-2-methylthiophene-5-boronic acid 
• 696-62-8 para-iodoanisole 
• 554-14-3 2-Methylthiophene 
• 5720-07-0 4-methoxyphenylboronic acid 
• 82303-13-7 (4-methoxyphenyl)zinc(II) bromide 

Downstream Products

• 169030-74-4 1-[5-(4-methoxyphenyl)-2-methylthien-3-yl]-2,3,3,4,4,5,5-heptafluorocyclopentene 
• 1379583-99-9 3,3,4,4,5,5-hexafluoro-1-(2-methoxyphenyl)-2-[5-(4-methoxyphenyl)-2-methyl-3-thienyl]cyclopent-1-ene 
• 1255910-31-6 1-(2,4-dimethyl-5-thiazolyl)-2-[2-methyl-5-(4-methoxyphenyl)-3-thienyl]perfluorocyclopentene 
• 1340599-93-0 1,2-bis-(5-[4-(2-{2-[2-(2-{2-hydrazidocarbomethoxy}ethoxy)-ethoxy]-ethoxy}-ethoxy)-phenyl]-2-methyl-thiophene-3-yl)-perfluorocyclopentene 
• 1147082-58-3 1,2-bis-(5-[4-(2-{2-[2-(2-{2-methoxycarbomethoxy}-ethoxy)-ethoxy]-ethoxy}-ethoxy)-phenyl]-2-methyl-thiophene-3-yl)-perfluorocyclopentene 
• 444689-09-2 1-[5'-(4''-methoxyphenyl)-2'-methylthien-3'-yl]-2-[2'-methyl-5'-(4''-ethynylphenyl)thien-3'-yl]-3,3,4,4,5,5-hexafluorocyclopentene 
• 1404481-86-2 C₃₀H₂₂N₄O₂S₄ 
• 1092119-08-8 (5-(4-methoxyphenyl)-2-methylthiophen-3-yl)boronic acid 
• 1248518-29-7 1-(2-ethyl-3-benzofuranyl)-2-[2-methyl-5-(4-methoxyphenyl)-3-thienyl]perfluorocyclopentene 
• 1312716-00-9 C₅₇H₅₀F₆N₄O₃S₂ 
• 1312716-01-0 1-[2-methyl-5-(4-methoxylphenyl)-3-thienyl]-2-[2-methyl-5-(4-formylphenyl)-3-thienyl]perfluorocyclopentene 
• 1312716-02-1 C₃₁H₂₄F₆O₃S₂ 

Relevant academic research and scientific papers

Polymorphism of 1,2-bis(2-methyl-5-p-methoxyphenyl-3-thienyl)perfluorocyclopentene and photochromic reactivity of the single crystals

Four polymorphic crystals were obtained by recrystallization of 1,2-bis(2-methyl-5-p-methoxyphenyl-3-thienyl)perfluorocyclopentene (1a) from hexane. All crystals underwent photochromic reactions upon alternate irradiation with ultraviolet (λ = 370 nm) and

Syntheses and properties of new photochromic diarylethene derivatives having a pyrazole unit

New photochromic diarylethenes 1a, 2a and 3a bearing a pyrazole unit have been synthesized. Their properties, including photochromic reactivity, fluorescence and electrochemical properties were investigated. These compounds showed good photochromic proper

Optochemical control of transcription by the use of 7-deaza-adenosine-based diarylethenes

Out of nine different 7-deaza-adenosine diarylethenes, we identified a high-performance photoswitch, suitable for the synthesis of photochromic DNA. By using solid phase synthesis, a photoresponsive T7 promotor was generated which allowed reversibly modulating the rate of enzymatic RNA synthesisin vitro.

Switchable Mesomeric Betaines Derived from Pyridinium-Phenolates and Bis(thienyl)ethane

Syntheses of push–pull substituted non-symmetric bis(thienyl)ethenes (BTEs) possessing a central perfluorocyclopentene core are described. The substituent effects of anisole, phenole, and phenolate as well as pyridine, pyridinium, and N-methylpyridinium substituents, joined through their 3- or 4-positions to the central BTE core, respectively, cover the range from very strongly electron-donating [σ(4-phenolate)=?1.00] to extremely strongly electron-withdrawing [σ(pyridinium-4-yl)=+2.57] in the title mesomeric betaines. The different isomers possessing 4-yl/4-yl, 4-yl/3-yl and 3-yl/3-yl substituents represent different combinations of conjugated and cross-conjugated partial structures and cause different spectroscopic properties. In addition, through-space conjugation between the 2- and 2′-position of the thiophenes can be observed which circumvents the charge-separation of through-bond cross-conjugation. The BTE possessing the push–pull chromophore consisting of 3-anisole and 4-pyridinium substituents (24) displays the best extinction coefficients within the series of compounds described here (?=33.8/15.7 L/mol ? cm), while the mesomeric betaine possessing an N-methylpyridinium-4-yl and a 4-phenolate substituent (29) displays considerable bathochromic shifts to λmax=724 nm in its closed form.

The mechanodonor-acceptor coupling (MDAC) approach for unidirectional multi-state fluorochromism

Uni-directional multi-state fluorochromic scaffolds are valuable photofunctional molecules and yet scarce. We report a general approach for their design, i.e., mechanodonor-acceptor coupling (MDAC). A photochromic molecule is a mechanodonor, due to its capability to convert photonic energy into mechanical force. Upon proper coupling, it can be used to drive a mechanochromic molecule for uni-directional multi-state fluorochromism. The embodiment of this approach is a rhodamine-dithienylethylene hydride (RDH), which has been successfully employed in super-resolution localization microscopy[Figure not available: see fulltext.]

Norbornadiene-bridged diarylethenes and their conversion into turn-off fluorescent photoswitches

We describe the synthesis and characterization of novel diarylethene photoswitches that contain a norbornadiene bridge and operate as p-type positive photochromes. One of the double bonds of norbornadiene is furthermore utilized to attach a fluoresceine tetrazine by an iEDDA cascade reaction, thereby forming a turn-off mode fluorescent photoswitch. This journal is

Photochromism of new unsymmetrical diarylethenes with a quinoline moiety

Three unsymmetrical diarylethenes with a 6-membered quinoline moiety were synthesized to investigate the effects of the substituents on their photochromism, and fluorescence, and the structure of one diarylethene was determined by single crystal X-ray dif

Comprising benzimidazole group of asymmetric perfluoro pentene photochromic fluorescent probe compound and its preparation method and application

The invention discloses an asymmetric perfluorocyclopentene photochromic fluorescent probe compound containing a benzimidazole group as well as a preparation method and an application of the asymmetric perfluorocyclopentene photochromic fluorescent probe compound. The photochromic material can keep good photochromic performance in a solution and a crystalline phase, has excellent performance such as good chemical and thermal stability, remarkable fatigue resistance, relatively high cyclizing quantum yield, relatively strong fluorescence property and very good sensitivity in an open loop state and a closed loop state in the solution, can be used for high-density holographic optical storage with storage attribute comparable with that of rewritable photon type storage and an symmetric type perfluorocyclopentene material, is relatively low in cost in preparation material and relatively great in application prospect.

Imidazole - the thiophen is fragrant heterocyclic ultra-short wavelength photochromic diaryl ethylene compound synthetic methods and application

The invention discloses a method for synthesizing an ultrashort-wavelength photochromic diarylethene compound by using imidazole-thiophene aromatic heterocycle and an application of the compound. A photochromic material can maintain good photochromic performance in a solution or film, has weaker fluorescence when the open-loop state ranges from 265 nm to 276 nm, has high fluorescence when the closed-loop state ranges from 400 nm to 550 nm, can be applied to a fluorescent photoswitch, an anti-forgery technology, a short-wavelength high-density holographic optical storage material and the like, and compared with the symmetrical thiophene or benzothiophene octafluorocyclopentene material, the material preparing cost is lower, and the application prospect is broader.

Photochromism of new unsymmetrical diarylethenes with an indazole moiety

A new class of photochromic diarylethenes with an indazole moiety has been firstly synthesized, and their photochromic and fluorescence properties have been investigated. The indazole moiety was connected directly to the central cyclopentene ring as one h