99948-83-1Relevant articles and documents
Heteroacene deriv., its precursor compound and method of manufacturing the same
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Paragraph 0287; 0288, (2017/01/02)
PROBLEM TO BE SOLVED: To provide a heteroacene derivative which has a high performance because its long-molecular axis is long, is excellent in oxidation resistance and forms a semiconductor active layer by an application method, and an oxidation-resistant organic semiconductor material and an organic thin film using the same. SOLUTION: The heteroacene derivative is represented by formula (1) (wherein T1and T2are identical to or different from each other and each represents a sulfur atom, a selenium atom or a tellurium atom; and rings A and B are identical to or different from each other and each has a structure represented by formula (A-1) or the like). COPYRIGHT: (C)2009,JPOandINPIT
2D networks of rhombic-shaped fused dehydrobenzo[12]annulenes: Structural variations under concentration control
Tahara, Kazukuni,Okuhata, Satoshi,Adisoejoso, Jinne,Lei, Shengbin,Fujita, Takumi,De Feyter, Steven,Tobe, Yoshito
supporting information; experimental part, p. 17583 - 17590 (2010/04/01)
A series of alkyl- and alkoxy-substituted rhombic-shaped bisDBA derivatives 1a-d, 2a, and 2b were synthesized for the purpose of the formation of porous networks at the 1,2,4-trichlorobenzene (TCB)/graphite interface. Depending on the alkyl-chain length and the solute concentration, bisDBAs exhibit five network structures, three porous structures (porous A, B, and C), and two nonporous structures (nonporous D and E), which are attributed to their rhombic core shape and the position of the substituents. BisDBAs 1a and 1b with the shorter alkyl chains favorably form a porous structure, whereas bisDBAs 1c and 1d with the longer alkyl chains are prone to form nonporous structures. However, upon dilution, nonporous structures are typically transformed into porous ones, a trend that can be understood by the effect of surface coverage, molecular density, and intermolecular interactions on the system's enthalpy. Furthermore, porous structures are stabilized by the coadsorption of solvent molecules. The most intriguing porous structure, the Kagome pattern, was formed for all compounds at least to some extent, and the size of its triangular and hexagonal pores could be tuned by the alkyl-chain length. The present study proves that the concentration control is a powerful and general tool for the construction of porous networks at the liquid-solid interface.
