Results 121 to 130 of about 9,678 (243)

Antibiofilm Activity of Curcumin and Piperine and Their Synergistic Effects with Antifungals against Candida albicans Clinical Isolates

open access: yesScientifica
Background. Candidiasis is the common name for diseases caused by yeast of the genus Candida. Candida albicans is one of the most implicated species in superficial and invasive candidiasis.
Ulrich Joël Tsopmene   +6 more
doaj   +1 more source

Ein Dithio‐Vinylthio‐C2‐Synthon, das kristalline und lumineszierende, schwefelhaltige Polymere ermöglicht

open access: yesAngewandte Chemie, Volume 138, Issue 22, 25 May 2026.
Die Umsetzung von CaC2 zu einem modularen C2‐Baustein ermöglicht die Synthese eines α,ω‐Bis(vinylthio)‐Monomers sowie dessen Weiterumsetzung zu kristallinen, sequenzdefinierten, schwefelfunktionalisierten Polymere. Dichte Thioether‐Cluster induzieren nichtkonventionelle Lumineszenz und ermöglichen eine präzise Kontrolle der Struktur‐Eigenschafts ...
Bercis Pektas   +4 more
wiley   +1 more source

THE DISTRIBUTION OF POLYENES IN THE SHELL OF ARCTICA ISLANDICA FROM NORTH ATLANTIC LOCALITIES: A CONFOCAL RAMAN MICROSCOPY STUDY

open access: yes, 2014
Many of the pigments that are widely found in coloured parts of mollusc shells are polyenes, i.e. molecules with a central polyenic chain (carbon-carbon single and double bonds).
Stemmer, Kristina, Nehrke, Gernot
core   +1 more source

Plasma Oscillations in Large Ring Polyenes

open access: yes, 1972
The possibility of collective motion of the :n:-electron system has been examined by many authors1- 3• In this context it is interesting to note that much more attention has been devoted to the linear conjugated systems than to the ring ones.
A. Ažman   +3 more
core  

Effect of charge and spin multiplicity on hyperpolarizabilities of donor-acceptor substituted polyenes [PDF]

open access: yes, 2017
756-766Theoretical studies of the ground state structure and nonlinear optical (NLO) properties of a number of donor-acceptor substituted singlet and triplet (neutral) and doublet (mono-positive and mono-negative) polyenes have been carried out.
Hatua, K   +5 more
core  

Excited State Potential Energy Surfaces of Polyenes and Protonated Schiff Bases

open access: yes, 2016
The potential energy surface of the 1Bu and 1A′ states of all-trans-polyenes and the corresponding protonated Schiff bases have been studied at density functional theory and coupled cluster levels. Linear polyenes and protonated Schiff bases with 4 to 12
Robert Send (1591123)   +3 more
core   +1 more source

Nonlinear Optical Properties of Polyenes: Electron Correlation and Chain Conformation

open access: yes, 1987
Using a recently developed many-electron theory of second and third order nonlinear optical susceptibilities, microscopic descriptions of γxxxx(-3ω;ω,ω,ω) are presented for two conformations of polyenes.
O. Zamani-Khamiri   +3 more
core   +1 more source

PHOTOCHEMISTRY OF POLYENES [PDF]

open access: yesPhotochemistry and Photobiology, 1975
openaire   +2 more sources

Optical nonlinearities in polyenes: role of intrinsic localized modes

open access: yes, 2015
Within a simple theoretical model we demonstrate analytically the effect of intrinsic localized modes such as breathers on nonlinear optical properties. We have earlier observed enhancement of optical nonlinearities in ab initio numerical simulations of ...
Kivshar, Yuri, Saxena, A, Bishop, A.R.
core   +1 more source

Nonlinear polarizabilities of donor-acceptor substituted conjugated polyenes

open access: yes, 1996
The polarizabilities of conjugated polyenes with 8-36 carbon atoms are calculated using the time dependent Hartree-Fock (TDHF) technique. By examining the reduced single-electron density matrix, we explore the relations among the ground state chemical ...
Mukamel, S   +3 more
core   +1 more source

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