Results 21 to 30 of about 33,071 (257)

On Groups in Which Many Automorphisms Are Cyclic

open access: yesMathematics, 2022
Let G be a group. An automorphism α of G is said to be a cyclic automorphism if the subgroup ⟨x,xα⟩ is cyclic for every element x of G. In [F. de Giovanni, M.L. Newell, A. Russo: On a class of normal endomorphisms of groups, J.
Mattia Brescia, Alessio Russo
doaj   +1 more source

Testing the Clar theory: Cyclic conjugation in some benzo- and naphthaleno-annelated ovalenes [PDF]

open access: yesKragujevac Journal of Science, 2014
Cyclic conjugation (assessed by its energy effect) is studied in benzo- and naphthaleno-annelated ovalenes, in which annelation is in positions d and o.
Gutman Ivan   +2 more
doaj   +1 more source

Enhancing fluorescence and lowering the optical gap through CP doping of a π-conjugated molecular backbone: A computational-based design approach

open access: yesJournal of Photochemistry and Photobiology, 2021
Design principles of organic fluorescent materials are investigated at the molecular level using a first-principles-based computational approach. The design approach incorporates hetero atoms into a conjugated cyclic skeleton by introducing CP bonds. In
Sunandan Sarkar   +3 more
doaj   +1 more source

Cyclic conjugation in benzo-annelated triphenylenes [PDF]

open access: yesJournal of the Serbian Chemical Society, 2010
Cyclic conjugation in benzo-annelated triphenylenes was studied by means of the energy effect (ef) and the π-electron content (EC) of the six-membered rings.
SLAVKO RADENKOVIĆ   +2 more
doaj  

Ultrasound-sensitive cRGD-modified liposomes as a novel drug delivery system

open access: yesArtificial Cells, Nanomedicine, and Biotechnology, 2022
Targeted liposomes enable the delivery of encapsulated chemotherapeutics to tumours by targeting specific receptors overexpressed on the surfaces of cancer cells; this helps in reducing the systemic side effects associated with the cytotoxic agents. Upon
Nour M. AlSawaftah   +5 more
doaj   +1 more source

Modulating Protein–Protein Interactions by Cyclic and Macrocyclic Peptides. Prominent Strategies and Examples

open access: yesMolecules, 2021
Cyclic and macrocyclic peptides constitute advanced molecules for modulating protein–protein interactions (PPIs). Although still peptide derivatives, they are metabolically more stable than linear counterparts, and should have a lower degree of ...
Rosario González-Muñiz   +2 more
doaj   +1 more source

Synthesis of Peptidomimetic Conjugates of Cyclic Nucleoside Phosphonates [PDF]

open access: yesCurrent Protocols in Nucleic Acid Chemistry, 2010
AbstractCyclic nucleoside phosphonates connected through a P‐O‐C linkage to a promoiety represent a class of prodrugs designed to overcome the low oral bioavailability of parent antiviral acyclic nucleoside phosphonates. In our prodrug approach, a nontoxic promoiety, such as an amino acid or dipeptide, is conjugated to the cyclic form of the parent ...
Michaela, Serpi   +3 more
openaire   +2 more sources

Effect of benzocyclobutadieno-annelation on cyclic conjugation in fluoranthene congeners [PDF]

open access: yesJournal of the Serbian Chemical Society, 2011
Earlier studies revealed that benzo-annelation has a peculiar effect on the intensity of cyclic conjugation in the five-membered ring of fluoranthene congeners.
IVAN GUTMAN   +2 more
doaj  

Aromaticity/antiaromaticity in cyclic conjugated hydrocarbons

open access: yesInternational Journal of Quantum Chemistry, 2002
AbstractThe physical reason for aromaticity/antiaromaticity was determined. The conclusion was reached after interpreting Hobey's mathematical results that were given in the study of the energy difference between the one‐dimensional linear and cyclic particles‐in‐a‐box models.
Ichikawa, Hiroshi, Sakata, Ken
openaire   +1 more source

Study of the Electrochemical Behavior of Merocyanine and Merocarbocyanine Salts and Their Transformation into Π-Electron Donor Molecules, Namely Tetrathiatetraazafulvalenes

open access: yesIndonesian Journal of Chemistry, 2021
An electrochemical study using the cyclic voltammetry method was carried out on some previously prepared merocyanines salts, namely thiazolideniumsulfonate salts 5a-b, and thiazolidenium chloride salts 6a-b, and merocarbocyanines salts, namely ...
Manel Khiat   +3 more
doaj   +1 more source

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