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.
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
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
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
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
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
