Results 31 to 40 of about 77,416 (292)

Achiral organoiodine-functionalized helical polyisocyanides for multiple asymmetric dearomative oxidations

open access: yesNature Communications, 2023
Immobilizing organocatalysts onto helical polymers can facilitate catalyst recycling and boost enantioselectivity. Here, the authors prepare achiral organoiodine-functionalized single left- and right-handed helical polyisocyanides from the same monomers ...
Zong-Quan Wu   +6 more
doaj   +1 more source

Supramolecular control over self-assembly and double thermoresponsive behavior of an amphiphilic block copolymer [PDF]

open access: yes, 2020
A poly(ethylene glycol)-b-poly[N, N-dimethylacrylamide-ran-2-acrylamidoethyl nonanoate] (PEG-b-P(DMA-AAEN)) block copolymer has been demonstrated to show double thermoresponsive behavior in aqueous solution in the presence of hydroxypropylated ...
Hoogenboom, Richard   +5 more
core   +1 more source

Mechanochemistry in Polymers with Supramolecular Mechanophores [PDF]

open access: yes, 2015
Mechanochemistry is a burgeoning field of materials science. Inspired by nature, many scientists have looked at different ways to introduce weak bonds into polymeric materials to impart them with function and in particular mechano-responsiveness. In the following sections, the incorporation of some of the weakest bonds, i.e.
Haehnel, Alexander P.   +3 more
openaire   +4 more sources

Heterogeneous Nucleation in Protein Crystallization

open access: yesBiomimetics, 2023
Protein crystallization was first discovered in the nineteenth century and has been studied for nearly 200 years. Protein crystallization technology has recently been widely used in many fields, such as drug purification and protein structure analysis ...
Hao Liu, Yue Zhao, Jing Sun
doaj   +1 more source

Supramolecular hierarchy among halogen and hydrogen bond donors in light-induced surface patterning [PDF]

open access: yes, 2015
Halogen bonding, a noncovalent interaction possessing several unique features compared to the more familiar hydrogen bonding, is emerging as a powerful tool in functional materials design.
Barrett C. J.   +10 more
core   +1 more source

An unexpected N-dependence in the viscosity reduction in all-polymer nanocomposite

open access: yesNature Communications, 2019
Addition of small nanoparticles into polymer melt can lead to decrease in viscosity but the underlying mechanism for such viscosity reduction remains unclear.
Tao Chen   +9 more
doaj   +1 more source

Hydrogen bonded supramolecular elastomers : correlating hydrogen bonding strength with morphology and rheology [PDF]

open access: yes, 2010
A series of six low molecular weight elastomers with hydrogen bonding end-groups have been designed, synthesised and studied. The poly(urethane) based elastomers all contained essentially the same hard block content (ca.
Greenland, Barnaby William   +6 more
core   +1 more source

Enhanced intermolecular forces in supramolecular polymer nanocomposites

open access: yeseXPRESS Polymer Letters, 2017
Ureido-pyrimidone (Upy) can dimerize in a self-complementary array of quadruple hydrogen bonds. In this paper, supramolecular polymer composites were prepared by blending Upy functionalized nanosilica with Upy end-capped polycarbonatediol.
F. Lin   +5 more
doaj   +1 more source

Unconventional assemblies of bisacylhydrazones: The role of water for circularly polarized luminescence

open access: yesAggregate, 2022
Understanding the precise molecular arrangement of chiral supramolecular polymers is essential not only to comprehend complex superstructures like proteins and DNA but also for the development of next‐generation optoelectronic materials, including ...
Hye Jin Cho   +9 more
doaj   +1 more source

Aromatic Gain in a Supramolecular Polymer

open access: yesAngewandte Chemie International Edition, 2015
AbstractThe synergy of aromatic gain and hydrogen bonding in a supramolecular polymer is explored. Partially aromatic bis(squaramide) bolaamphiphiles were designed to self‐assemble through a combination of hydrophobic, hydrogen‐bonding, and aromatic effects into stiff, high‐aspect‐ratio fibers.
Saez Talens, V.   +5 more
openaire   +4 more sources

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