1459-96-7Relevant articles and documents
Rodlike molecules by Kolbe electrolysis
Nuding,V?gtle,Danielmeier,Steckhan
, p. 71 - 76 (1996)
A new short and simple pathway to rigid, rod-shaped hydrocarbon skeletons, in particular of the oligo-bicyclo[2.2.2]octane type, is described. The key step consists of an electrochemical C-C bond coupling reaction between bridgehead positions of bi- and tricyclic carboxylic acids. Functional groups can be retained, they influence the yield of the C-C bond connection. In this way, otherwise difficult or laborious syntheses are shortened, and rigid, non-collapsable nano size spacer units are easily available. The optimized electrochemical procedures are described in detail.
Unique gas and hydrocarbon adsorption in a highly porous metal-organic framework made of extended aliphatic ligands
Li, Kunhao,Lee, Jeongyong,Olson, David H.,Emge, Thomas J.,Bi, Wenhua,Eibling, Matthew J.,Li, Jing
, p. 6123 - 6125 (2008)
High and unique gas and hydrocarbon adsorption in a highly stable guest-free microporous metal-organic framework constructed on rigid aliphatic ligands, H2bodc and ted, is reported in this work. The Royal Society of Chemistry.
Tuning Singlet Fission in π-Bridge-π Chromophores
Kumarasamy, Elango,Sanders, Samuel N.,Tayebjee, Murad J. Y.,Asadpoordarvish, Amir,Hele, Timothy J. H.,Fuemmeler, Eric G.,Pun, Andrew B.,Yablon, Lauren M.,Low, Jonathan Z.,Paley, Daniel W.,Dean, Jacob C.,Choi, Bonnie,Scholes, Gregory D.,Steigerwald, Michael L.,Ananth, Nandini,McCamey, Dane R.,Sfeir, Matthew Y.,Campos, Luis M.
supporting information, p. 12488 - 12494 (2017/09/23)
We have designed a series of pentacene dimers separated by homoconjugated or nonconjugated bridges that exhibit fast and efficient intramolecular singlet exciton fission (iSF). These materials are distinctive among reported iSF compounds because they exist in the unexplored regime of close spatial proximity but weak electronic coupling between the singlet exciton and triplet pair states. Using transient absorption spectroscopy to investigate photophysics in these molecules, we find that homoconjugated dimers display desirable excited-state dynamics, with significantly reduced recombination rates as compared to conjugated dimers with similar singlet fission rates. In addition, unlike conjugated dimers, the time constants for singlet fission are relatively insensitive to the interplanar angle between chromophores, since rotation about σ bonds negligibly affects the orbital overlap within the π-bonding network. In the nonconjugated dimer, where the iSF occurs with a time constant >10 ns, comparable to the fluorescence lifetime, we used electron spin resonance spectroscopy to unequivocally establish the formation of triplet-triplet multiexcitons and uncoupled triplet excitons through singlet fission. Together, these studies enable us to articulate the role of the conjugation motif in iSF.
Discovery of functionalized bisimidazoles bearing cyclic aliphatic-phenyl motifs as HCV NS5A inhibitors
Zhong, Min,Peng, Eric,Huang, Ningwu,Huang, Qi,Huq, Anja,Lau, Meiyen,Colonno, Richard,Li, Leping
, p. 5731 - 5737 (2015/01/08)
This Letter describes the discovery of a number of functionalized bisimidazoles bearing a cyclohexylphenyl, piperidylphenyl, or bicyclo[2,2,2]octylphenyl motif as HCV NS5A inhibitors. Compounds 2c, 4b and 6 have demonstrated low single-digit nM potency in gt-1a replicon and double-digit pM potency in gt-1b replicon, respectively. Moreover, both 4b and 6 have, respectively, exhibited good oral bioavailability in rats with a favorable liver/plasma ratio of the drug concentration.