5149-65-5Relevant academic research and scientific papers
Two-Dimensional Chirality Transfer via On-Surface Reaction
Zhang, Haiming,Gong, Zhongmiao,Sun, Kewei,Duan, Ruomeng,Ji, Penghui,Li, Ling,Li, Chen,Müllen, Klaus,Chi, Lifeng
supporting information, p. 11743 - 11748 (2016/09/23)
Two-dimensional chirality transfer from self-assembled (SA) molecules to covalently bonded products was achieved via on-surface synthesis on Au(111) substrates by choosing 1,4-dibromo-2,5-didodecylbenzene (12DB) and 1,4-dibromo-2,5-ditridecylbenzene (13DB
A giant molecular spoked wheel
May, Robert,Jester, Stefan-S.,H?ger, Sigurd
supporting information, p. 16732 - 16735 (2015/01/16)
The modular synthesis of a defined, rigid molecular spoked wheel structure with the sum formula C1878H2682 and a diameter of about 12 nm is described. The attached 96 dodecyl side chains provide the solubility of the 25 260 Da compound in common organic solvents. At the octanoic acid/highly oriented pyrolytic graphite interface, the molecules self-assemble to form an ordered 2D lattice, which is investigated by scanning tunneling microscopy, displaying their structure with submolecular resolution.
Conjugated monomers and polymers and preparation and use thereof
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, (2009/07/02)
Disclosed are new conjugated compounds (e.g., monomers and polymers) that include ladder-type moieties which can be used for preparing semiconducting materials. Such conjugated compounds can exhibit high n-type carrier mobility and/or good current modulat
Design, synthesis, and characterization of ladder-type molecules and polymers. air-stable, solution-processable n-channel and ambipolar semiconductors for thin-film transistors via experiment and theory
Usta, Hakan,Risko, Chad,Wang, Zhiming,Huang, Hui,Deliomeroglu, Murat K.,et al.
supporting information; experimental part, p. 5586 - 5608 (2009/09/25)
The design, synthesis, and characterization of new high-performance n-channel molecular/ polymeric semiconductors that are solution-processable and air-stable is of great interest for the development of p - n junctions, bipolar transistors, and organic co
CONJUGATED MONOMERS AND POLYMERS AND PREPARATION AND USE THEREOF
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Page/Page column 60-61, (2009/03/07)
Disclosed are new conjugated compounds (e.g., monomers and polymers) that include ladder-type moieties which can be used for preparing semiconducting materials. Such conjugated compounds can exhibit high n-type carrier mobility and/or good current modulat
Highly fluorinated benzobisbenzothiophenes
Wang, Yongfeng,Parkin, Sean R.,Gierschner, Johannes,Watson, Mark D.
supporting information; experimental part, p. 3307 - 3310 (2009/05/11)
(Figure Presented) Expedient, facile syntheses of highly fluorinated benzobisbenzothiophenes (BBBT) are reported. Defined peripheral arrangements of sulfur and fluorine atoms lead to extensive crystalline networks of edge-to-edge S-F close contacts. The e
Synthesis and characterization of electron-deficient and highly soluble (bis)indenofluorene building blocks for n-type semiconducting polymers
Usta, Hakan,Facchetti, Antonio,Marks, Tobin J.
supporting information; experimental part, p. 1385 - 1388 (2009/04/10)
(Chemical Equation Presented) New electron-deficient and soluble indenofluorene-based and bisindenofluorene-based ladder-type building blocks embedding carbonyl and dicyanovinylene functionalities were synthesized, and their optical and electrochemical pr
Molecular mechanism of anomalous increase in the helical pitch of cholesteric liquid crystals induced by achiral dopants
Kidowaki, Masatoshi,Moriyama, Masaya,Wada, Momoyo,Tamaoki, Nobuyuki
, p. 12054 - 12061 (2007/10/03)
A dopant-induced anomalous increase in the helical pitch of dicholesteryl 10,12-docosadiynedioate 1 is explained by generation of smectic clusters in the cholesteric phase where the dopants act as promoters of smectic domains. The dopants, having a mesogenic core and the proper length of alkyl chains on both their molecular sides, such as 4,4′-dialkylazobenzenes, 4,4′-dialkylazoxybenzenes and 4,4′-dialkylbiphenyls, considerably increase the pitch. However, dopants having benzene or a binaphthyl structure in the molecular center, and alkyl chain at one side of the molecules and Z-isomers of azobenzene and azoxybenzene derivatives slightly decrease the pitch by acting as impurities that decrease the transition temperature of the host. At X-ray diffraction study of the cholesterics revealed that the pitch increases with an increase in size and amount of the smectic domains induced by the appropriate dopants.
Rapid bi-directional synthesis of oligo(1,4-phenylene ethynylene)s
Huang, Shenlin,Tour, James M.
, p. 3347 - 3350 (2007/10/03)
A new method for the preparation of oligo(1,4-phenylene ethynylene)s is described. Only two sets of reaction conditions are needed for the entire iterative synthetic sequence: (1) Pd-catalyzed cross-coupling of trimethylsilylacetylene with an aryl halide and (2) in situ desilylation/Pd- catalyzed coupling with an aryl iodide. This method provides a fast synthetic route to short length oligo(1,4-phenylene ethynylene)s by oligomer growth at both ends.
Rapid Solid-Phase Syntheses of Conjugated Homooligomers and [AB] Alternating Block Cooligomers of Precise Length and Constitution
Huang, Shenlin,Tour, James M.
, p. 8898 - 8906 (2007/10/03)
A new iterative divergent/convergent solid-phase synthesis of precisely defined oligomers is described. The starting monomer is affixed to the solid support so that both ends are free for growth. The polymer-supported n-mer bearing α,ω,-terminal iodides i
