259139-06-5

Upstream product

• 23703-22-2 1-bromo-4-n-hexylbenzene 
• 1066-54-2 trimethylsilylacetylene 
• 1077-16-3 hexylbenzene 
• 16116-78-2 (4-bromophenyl)(trimethylsilyl)acetylene 
• 3761-92-0 n-hexylmagnesium bromide 
• 108-86-1 bromobenzene 
• 7295-46-7 1-(4-bromophenyl)-1-hexanone 
• 142-61-0 Hexanoyl chloride 
• 33228-45-4 4-hexylaniline 

Downstream Products

• 16967-02-5 1-phenyl-1-octyne 
• 1065644-37-2 2,6-bis[2-(4-hexylphenyl)ethynyl]anthracene 
• 1349683-07-3 4,7-bis[(4-hexylphenyl)ethynyl]-1-methyl-2-(5-phenylthiophen-2-yl)-1H-benzo[d]imidazole 
• 421554-59-8 methyl 4-[2-amino-4-(4-n-hexylphenylethynyl)-5-nitrophenylethynyl]benzoate 
• 421554-58-7 2-bromo-5-(4-n-hexylphenylethynyl)-4-nitro-N-acetylaniline 
• 68579-71-5 1,4-bis(4-hexylphenyl)buta-1,3-diyne 
• 945868-20-2 4-hexyl-1-phenylethynyl-2,2'-bithiophene 
• 79887-11-9 4-hexylphenylacetylene 

Relevant academic research and scientific papers

Solution processable symmetric 4-alkylethynylbenzene end-capped anthracene derivatives

New candidates composed of anthracene and 4-alkylethynylbenzene end-capped oligomers for OTFTs were synthesized under Sonogashira coupling reaction conditions. All oligomers were characterized by FT-IR, mass, UV-visible, and PL emission spectrum analyses, cyclic voltammetry (CV), differential scanning calorimetry (DSC), thermal gravimetric analysis (TGA), 1H-NMR, and 13C-NMR. Investigation of their physical properties showed that the oligomers had high oxidation potential and thermal stability. Thin films of DHPEAnt and DDPEAnt were characterized by spin coating them onto Si/SiO 2 to fabricate top-contact OTFTs. The devices prepared using DHPEAnt and DDPEAnt showed hole field-effect mobilities of 4.0 × 10-3 cm2/Vs and 2.0 × 10-3 cm2/Vs, respectively, for solution-processed OTFTs.

Preparation and acid-responsive photophysical properties of T-shaped π-conjugated molecules containing a benzimidazole junction

T-shaped π-conjugated molecules with an N-methyl-benzimidazole junction have been synthesized and their acid-responsive photophysical properties owing to the change in the π-conjugation system are discussed. T-shaped π-conjugated molecules consist of two orthogonal π-conjugated systems including a phenyl thiophene extended from the 2-position and alkyl phenylenes connected through various π-spacers from the 4,7-positions of the N-methyl-benzimidazole junction. The π-spacers, such as thiophene, ethyne, and ethane, have an effect on the acid response of photophysical properties in terms of changes in conformation, excited-state energy and charge-transfer (CT) characteristics. In particular, the π-conjugated molecule with ethynyl spacers exhibited a marked redshift in the fluorescence spectrum with a large Stokes shift upon the addition of acid, whereas the other molecules showed substantial quenching. The redshift in emission was studied in detail by temperature-dependent fluorescence measurements, which indicated the transition to a CT state over the finite activation energy at the excited state. The change in the frontier molecular orbitals upon acid addition was further discussed by means of DFT calculations.

Development of organic field-effect properties by introducing aryl-acetylene into benzodithiophene

Ethynylene-containing benzo[1,2-b:4,5-b′]dithiophene derivatives 1a-c (BPEBDT, BTEBDT and BHPEBDT) were designed and synthesized. Their physicochemical properties were studied by absorption spectra and electrochemistry. 1a-c displayed high field-effect tr

NOVEL ORGANIC SEMICONDUCTOR COMPOUND, AND ORGANIC THIN FILM TRANSISTOR USING THE SAME

The present invention relates to novel mono- molecular organic semiconductor compounds and organic thin film transistors comprising the same. The organic semiconductor compounds according to the present invention are characterized by a structure of an acene derivative substituted with acetylene groups at both ends, a structure of anthracene derivative substituted with acetylene groups, or a structure of a multi-nuclear aromatic derivative functionalized by naphthalene having an electron-donor substituent at both ends.

Ordering of apolar and polar solutes in nematic solvents

To illustrate the relative importance of electrostatic interactions, the LC-NMR data for a pair of polar and apolar solutes that are structural isomers, ortho- and para-dichlorobenzene, respectively, dissolved in polar and apolar nematogens were analyzed.

Synthesis and preliminary testing of molecular wires and devices

Presented here are several convergent synthetic routes to conjugated oligo(phenylene ethynylene)s. Some of these oligomers are free of functional groups, while others possess donor groups, acceptor groups, porphyrin interiors, and other heterocyclic interiors for various potential transmission and digital device applications. The syntheses of oligo(phenylene ethynylene)s with a variety of end groups for attachment to numerous metal probes and surfaces are presented. Some of the functionalized molecular systems showed linear, wire-like, current versus voltage (I(V)) responses, while others exhibited nonlinear I(V) curves for negative differential resistance (NDR) and molecular random access memory effects. Finally, the syntheses of functionalized oligomers are described that can form self-assembled monolayers on metallic electrodes that reduce the Schottky barriers. Information from the Schottky barrier studies can provide useful insight into molecular alligator clip optimizations for molecuar electronics.