606098-82-2Relevant articles and documents
Shape-persistent V-shaped mesogens - Formation of nematic phases with biaxial order
Lehmann, Matthias,Kang, Shin-Woong,Koehn, Christiane,Haseloh, Soenke,Kolb, Ute,Schollmeyer, Dieter,Wang, Qingbing,Kumar, Satyendra
, p. 4326 - 4334 (2006)
A homologous series of shape-persistent V-shaped molecules has been designed to form the biaxial nematic phase. Phenyleneethynylene moieties are attached to a bent fluorenone unit to create an apex angle of about 90°, which is determined from the single c
Experimental and Computational Studies of the Single-Molecule Conductance of Ru(II) and Pt(II) trans-Bis(acetylide) Complexes
Al-Owaedi, Oday A.,Milan, David C.,Oerthel, Marie-Christine,Bock, S?ren,Yufit, Dmitry S.,Howard, Judith A.K.,Higgins, Simon J.,Nichols, Richard J.,Lambert, Colin J.,Bryce, Martin R.,Low, Paul J.
, p. 2944 - 2954 (2016/11/03)
The single-molecule conductance of metal complexes of the general forms trans-Ru(C≡CArC≡CY)2(dppe)2 and trans-Pt(C≡CArC≡CY)2(PPh3)2 (Ar = 1,4-C6H2-2,5-(OC6H13/su
Self-assembled monolayers of clamped oligo(phenylene-ethynylene- butadiynylene)s
Jester, Stefan-S.,Schmitz, Daniela,Eberhagen, Friederike,Hoeger, Sigurd
, p. 8838 - 8840 (2011/09/14)
Rigid rod oligo(phenylene-ethynylene-butadiynylene)s (oPEBs), "half-rings" of two rigid rods connected via a molecular clamp unit, and shape-persistent macrocycles (cyclic "half-ring dimers") are synthesized and their self-assembled monolayers (SAMs) are
P-phenyleneethynylene molecular wires: Influence of structure on photoinduced electron-transfer properties
Wielopolski, Mateusz,Atienza, Carmen,Clark, Timothy,Guldi, Dirk M.,Martin, Nazario
supporting information; experimental part, p. 6379 - 6390 (2009/06/18)
A series of donor-acceptor arrays (exTTF-oPPE-C60) containing π-conjugated oligo(phenyleneethynylene) wires (oPPE) of different length between π-extended tetrathiafulvalene (exTTF) as electron donor and fullerene (C60) as electron acceptor has been prepared by following a convergent synthesis. The key reaction in these approaches is the bromo-iodo selectivity of the Hagihara-Sonogashira reaction and the deprotecting of acetylenes with different silyl groups to afford the corresponding donor-acceptor conjugates in moderate yields. The electronic interactions between the three electroactive species were determined by using UV-visible spectroscopy and cyclic voltammetry. Our studies clearly confirm that, although the C60 units are connected to the exTTF donor through π-conjugated oPPE frameworks, no significant electronic interactions are observed in the ground state. Theoretical calculations predict how a simple exchange from C=C double bonds (i.e., oligo(p-phenylenevinylene) to C≡C triple bonds (i.e., oPPE) in the electron donor-acceptor conjugates considerably alters long-range electron transfer. Photoexcitation of exTTF-oPPE-C 60 leads to the following features: a transient photoproduct with maxima at 660 and 1000 nm, which are unambiguously attributed to the photolytically generated radical-ion-pair state, [exTTF+-oPPE- C60-]. Both charge-separation and charge-recombination processes give rise to a molecular-wire behaviour of the oPPE moiety with an attenuation factor (β) of (0.2 ±0.05) A-1.
An effective, orthogonal deprotection strategy for differentially functionalized, linear and Y-shaped oligo phenylene ethynylenes
Chandra, Kusum L.,Zhang, Sheng,Gorman, Christopher B.
, p. 7120 - 7132 (2008/02/07)
Several methodologies for the selective deprotection acetylenes have been reported previously. However, as is shown here, they are often not reliable or convenient. Here, an approach is reported that is efficient and general. Use of this approach to synth
Rigid phenylene ethynylene units linked by a V-shaped centre. An approach to biaxial nematogens?
Lehmann, Matthias,Levin, Jeremy
, p. 273/[1315]-281/[1323] (2007/10/03)
Encouraged by theoretical predictions that nematic phases formed from V-shaped compounds could be biaxial, shape-persistent phenylene ethynylene arms linked by 1,3-phenylene, 4,4′-diphenylenemethane and 3,6-fluorenone units have been synthesized. Crystall
A giant conjugated molecular ring
Mayor, Marcel,Didschies, Claudia
, p. 3176 - 3179 (2007/10/03)
Ever increasing circles? The giant cycle 1 has a diameter of 12 nm making it the largest, shape persistent and monodisperse cyclic molecular structure designed and synthesized to date. A modular approach consisting of a series of subsequent dimerization s