Results 71 to 80 of about 9,421 (186)

Nonlinear Optical Properties of Polyenes: Electron Correlation and Chain Conformation [PDF]

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

Optical nonlinearities in polyenes: role of intrinsic localized modes [PDF]

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 [PDF]

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

Convenient synthesis of retinol-related polyenes through hydroxyalkylation of 3-sulfolenes [PDF]

open access: yes, 2001
Convenient synthesis of retinol-related polyenes is described through hydroxyalkylation of 3-sulfolenes followed by one-pot desulfonylation and dehydration in the presence Of POCl3/ pyridine in ...
SUBRAMANIAN, T, BHAT, SV, CHOU, TS
core   +1 more source

Stimulated emission depletion dynamics in push-push polyenes [PDF]

open access: yes, 2004
Two-photon fluorescence polarisation and stimulated emission depletion dynamics are investigated in three high two -photon cross-section push-push polyenes: OM62, LP79 and OM77 and compared to the behaviour of a standard fluorophore (rhodamine 6G).
Porres, L   +6 more
core  

Highly Regio- and Stereoselective Catalytic Synthesis of Conjugated Dienes and Polyenes [PDF]

open access: yes, 2018
Conjugated dienes and polyenes are typically synthesized by sequential introduction of CC bonds. Here, we report a practical and scalable, catalytic dienylation that is highly regio- and stereoselective for both CC bonds.
Hadi D. Arman (1348743)   +6 more
core   +1 more source

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  

PHOTOCHEMISTRY OF POLYENES [PDF]

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

Stereoselective cis-dihydroxylation of azulene and related non-aromatic polyenes [PDF]

open access: yes
Dioxygenase-catalysed dihydroxylation of azulene and related non-aromatic polyenes has been found to yield enantiopure chiral cis-diols of synthetic potential. (C) 1998 Elsevier Science Ltd.

core  

The influence of antifungal polyenes on in vitro adherence of Candida to epithelial cells [PDF]

open access: yes, 2002
Objectives: Oral candidiasis is the most common opportunistic infection in immunocompromised patients. The antifungal polyenes are commonly used for the treatment of oral candidiasis.
Düzgüneş, Nejat   +2 more
core  

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