444689-09-2

Upstream product

• 271242-20-7 (2-(4-bromophenyl)ethynyl)triisopropylsilane 
• 104-92-7 1-bromo-4-methoxy-benzene 
• 169030-74-4 1-[5-(4-methoxyphenyl)-2-methylthien-3-yl]-2,3,3,4,4,5,5-heptafluorocyclopentene 
• 156686-75-8 3-bromo-5-(4-methoxyphenyl)-2-methylthiophene 
• 1234908-69-0 1-[5-(4-ethoxyphenyl)-2-methylthienyl-3-yl]-2-{2-methyl-5-[4-(trimethylsilyl-ethynyl)phenyl]thien-3-yl}-3,3,4,4,5,5-hexafluorocyclopentene 
• 154566-69-5 3-bromo-2-methylthiophene-5-boronic acid 

Downstream Products

• 1048953-25-8 C₇₄H₆₀F₆N₄O₅S₂ 
• 1227205-38-0 C₇₂H₄₃F₆I₅OS₂ 
• 1227205-43-7 C₇₂H₄₇BrF₆OS₂ 

Relevant academic research and scientific papers

Photonic switching of photoinduced electron transfer in a dithienylethene-porphyrin-fullerene triad molecule

A dithienylethene (DTE)-porphyrin (P)-fullerene (C60) triad molecule in which intramolecular photoinduced electron transfer is controlled by the photochromic DTE moiety has been prepared. Irradiation of the molecule with visible light gives the

An all-photonic molecule-based parity generator/checker for error detection in data transmission

The function of a parity generator/checker, which is an essential operation for detecting errors in data transmission, has been realized with multiphotochromic switches by taking advantage of a neuron-like fluorescence response and reversible light-induced transformations between the implicated isomers.

All-photonic multifunctional molecular logic device

Photochromes are photoswitchable, bistable chromophores which, like transistors, can implement binary logic operations. When several photochromes are combined in one molecule, interactions between them such as energy and electron transfer allow design of

Efficient preparation of photoswitchable dithienylethene-linker-conjugates by palladium-catalyzed coupling reactions of terminal alkynes with thienyl chlorides and other aryl halides

Three photochromic dithie-nylethene-linker-conjugates with an adamantane core containing different spacer lengths and footprint areas with carboxylic anchoring groups are synthesized. The synthetic routes start either from the ethynylene-linker 5 or the iodo-substituted linker 8. Reaction conditions for the final Sonogashira coupling step between ethynylenelinker 5 with the chloro-substituted dithienylethene 4 in the presence of [PdCl 2(CH3CN)2]/X-Phos and Cs2CO 3 or K3PO4 are optimized using 2-chloro-5-methylthiophene (9) and triethylsily-lacetylene or triisopropylsilylacetylene (10a,b) as model compounds. Experimental conditions are found to suppress the activation of the C(sp)-Si bond in TIPS-acetylene 10 b, a reaction leading to a subsequent cross-coupling reaction to form by-product 12. Furthermore, activation of the C(sp)-Si bond in the presence of the fluorinated backbone of the chloro-substituted di-thienylethene 4 can also be prevented. The photochromic properties of the conjugate 3 and its precursor dithienyl-ethene 7b are also investigated. 2010 Wiley-VCH Verlag GmbH Co. KGaA, Weinheim.