منابع مشابه
Semi-flexible hydrogen-bonded and non-hydrogen bonded lattice polymers
We investigate the addition of stiffness to the lattice model of hydrogen-bonded polymers in two and three dimensions. We find that, in contrast to polymers that interact via a homogeneous short-range interaction, the collapse transition is unchanged by any amount of stiffness: this supports the physical argument that hydrogen bonding already introduces an effective stiffness. Contrary to possi...
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Random copolymers consisting of n-butyl acrylate backbones with quadruple hydrogenbonding side chains based on 2-ureido-4[1H]-pyrimidinone (UPy) have been synthesized via controlled radical polymerization and postpolymerization functionalization. Through this synthetic strategy highUPymonomer content (15 mol %) can be reached while maintaining low polydispersity and excellent control over molec...
متن کاملTerahertz Vibrations and Hydrogen-Bonded Networks in Crystals
The development of terahertz technology in the last few decades has made it possible to obtain a clear terahertz (THz) spectrum. THz vibrations clearly show the formation of weak bonds in crystals. The simultaneous progress in the code of first-principles calculations treating noncovalent interactions has established the position of THz spectroscopy as a powerful tool for detecting the weak bon...
متن کاملHydrogen-Bonded Porphyrinic Solids: Supramolecular Networks of Octahydroxy Porphyrins
Symmetrically substituted octahydroxy porphyrins, tetrakis(3′,5′-dihydroxyphenyl)porphyrin, H2T(3′,5′DHP)P, tetrakis(2′,6′-dihydroxyphenyl)porphyrin, H2T(2′,6′-DHP)P, and their Zn(II) and Mn(III) derivatives have been developed as building blocks for supramolecular hydrogen-bonded networks. The crystal structures of a series of these porphyrins exhibit unique structural features through assembl...
متن کاملSelf-assembly and conductivity of hydrogen-bonded oligothiophene nanofiber networks.
Symmetric oligothiophene derivatives containing hydrogen bond forming segments create self-supporting organogels consisting of self-assembled 1D nanostructures at low concentrations. Hydrogen bond formation and π-π stacking were both found to be crucial for the formation of conductive supramolecular networks of 1D nanostructures.
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ژورنال
عنوان ژورنال: Physical Review B
سال: 2006
ISSN: 1098-0121,1550-235X
DOI: 10.1103/physrevb.73.024210