Imidazole as a parent π-conjugated backbone in charge-transfer chromophores

• Jiří Kulhánek and
• Filip Bureš

Beilstein J. Org. Chem. 2012, 8, 25–49, doi:10.3762/bjoc.8.4

• ][81], push–pull amines and betaines 74–78 [82][83][84][85][86][87], alkoxy derivatives 79,80 [88], biimidazoles 81 [89][90][91][92], and triimidazoles 82 [93][94], as well as fullerenes [95] and polymers [96][97][98][99]. The chemistry of 4,5-dicyanoimidazole was reviewed in 1987 by Donald and Webster

Synthesis of fluoranthenes by hydroarylation of alkynes catalyzed by gold(I) or gallium trichloride

• Sergio Pascual,
• Christophe Bour,
• Paula de Mendoza and
• Antonio M. Echavarren

Beilstein J. Org. Chem. 2011, 7, 1520–1525, doi:10.3762/bjoc.7.178

• synthesis of large polyarenes [40][41][42][43], which are related to the fullerenes [44], we used the palladium-catalyzed arylation reaction as the main tool [45][46][47][48]. We decided to try the triple hydroarylation of substrates of type 1 to give 3,9,15-triaryldiacenaphtho[1,2-j:1',2'-l]fluoranthenes 2

Reciprocal polyhedra and the Euler relationship: cage hydrocarbons, C_nH_n and closo-boranes [B_xH_x]²⁻

• Michael J. McGlinchey and
• Henning Hopf

Beilstein J. Org. Chem. 2011, 7, 222–233, doi:10.3762/bjoc.7.30

• original concept and propose that other highly symmetrical cage hydrocarbons of the CnHn type might have closo-borane counterparts. Indeed, Lipscomb and Massa have discussed the structures of borane analogues of fullerenes [52][53] and even of nanotubes [54]. In particular, they proposed that C60 (V, E, F

• octahedral D3d geometry [59]. Interestingly, King et al. have pointed out the reciprocal polyhedral relationship between gold clusters and fullerenes [60]. As noted above, molecular analogues of several members of both sets of the complementary polyhedra exhibited by the closo-boranes and by the

Syntheses and properties of thienyl-substituted dithienophenazines

• Annemarie Meyer,
• Eva Sigmund,
• Friedhelm Luppertz,
• Gregor Schnakenburg,
• Immanuel Gadaczek,
• Thomas Bredow,
• Stefan-S. Jester and
• Sigurd Höger

Beilstein J. Org. Chem. 2010, 6, 1180–1187, doi:10.3762/bjoc.6.135

• well as cyclic and polycyclic thiophenes are valuable templates for the epitaxial coadsorption of adlayers, in particular for fullerenes and metallacycles [14][15][16][17]. Results and Discussion Here we report the syntheses of two isomeric benzodithiophenediones, their respective phenazines and their

Synthesis, electronic properties and self-assembly on Au{111} of thiolated (oligo)phenothiazines

• Adam W. Franz,
• Svetlana Stoycheva,
• Michael Himmelhaus and
• Thomas J. J. Müller

Beilstein J. Org. Chem. 2010, 6, No. 72, doi:10.3762/bjoc.6.72

• [18], porphyrin derivatives [20], phenanthrenes [22][23], fullerenes [24], and optically active naphthalenes [25] adsorbed on gold were studied in break-junction experiments and their properties on conductance, 1-bit random access memory and, especially, with regard to their ability to function as

Synthesis of thienyl analogues of PCBM and investigation of morphology of mixtures in P3HT

• Fukashi Matsumoto,
• Kazuyuki Moriwaki,
• Yuko Takao and
• Toshinobu Ohno

Beilstein J. Org. Chem. 2008, 4, No. 33, doi:10.3762/bjoc.4.33

• methanofullerenes was performed by using dichloromethane as a solvent. es-TThCBM (3d) exhibited 1.4 times greater solubility in dichloromethane than PCBM. Keywords: fullerene; morphology; organic fullerenes; PCBM; photovoltaic cell; Introduction The demand for inexpensive, renewable energy sources continues to

• . Solubility of methanofullerenes Good solubility of fullerenes is important for fabricating a photovoltaic device with good morphology [24]. In fact, PCBM is one of the most soluble fullerene derivatives and this is the main reason why it is used for the fabrication of PV cells. Chlorobenzene is normally used

• as a solvent of P3HT and fullerenes to fabricate a bulk hetero layer by spin coating; however, chlorobenzene almost completely dissolves methanofullerenes and hence cannot be used to determine and compare the solubility of different methanofullerenes at a small scale; therefore, in this study