- A new building block for anion supramolecular chemistry. Study of carbazolocarbazole as anion receptor
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A novel carbazolocarbazole system has been evaluated as an anion receptor in DMF solution. A good affinity has been detected for oxoanions. The anion binding studies have been contrasted by different experimental techniques.
- Curiel, David,Mas-Montoya, Miriam,Sanchez, Guzman,Orenes, Raul A.,Molina, Pedro,Tarraga, Alberto
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- Synthesis and characterization of new carbazolocarbazoles: Toward π-extended N-fused heteroacenes
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(Figure Presented) A regiospecific route has been developed for the synthesis of carbazolo[1,2-a]carbazole. The synthetic strategy is based on the use of appropriately tetrasubstituted naphthalene. Optical and electrochemical characterization of the fused
- Curiel, David,Mas-Montoya, Miriam,Uruvakili, Anasuyama,Orenes, Raul A.,Pallamreddy, Haranath,Molina, Pedro
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- Isomeric carbazolocarbazoles: Synthesis, characterization and comparative study in Organic Field Effect Transistors
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We report here the synthesis and characterization of a new family of isomeric carbazolocarbazole derivatives, namely carbazolo[1,2-a]carbazole, carbazolo[3,2-b]carbazole and carbazolo[4,3-c]carbazole. Thermal, optical, electrochemical, morphological and semiconducting properties have been studied to understand the influence of geometrical isomerism on the optoelectronic properties of these compounds. Different packing patterns have been observed by single crystal X-ray diffraction (XRD) which then correlate with the different morphologies of the evaporated thin films studied by XRD and Atomic Force Microscopy (AFM). The effect of N-substituents has also been evaluated for one of the isomers revealing a noticeable influence on the performance as organic semiconductors in Organic Field Effect Transistors (OFETs). A good p-channel field effect has been determined for N,N′-dioctylcarbazolo[4,3-c]carbazole with a mobility of 0.02 cm2 V-1 s-1 and I on/Ioff ratio of 106 in air. These preliminary results demonstrate the promising properties of molecular carbazolocarbazole systems which should be further explored in the area of organic semiconducting materials.
- Mas-Montoya, Miriam,Ortiz, Rocio Ponce,Curiel, David,Espinosa, Arturo,Allain, Magali,Facchetti, Antonio,Marks, Tobin J.
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p. 1959 - 1969
(2013/05/21)
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