scholarly journals Optical spectra of organic dyes in condensed phases: the role of the medium polarizability

2020 ◽  
Vol 22 (44) ◽  
pp. 25483-25491
Author(s):  
D. K. Andrea Phan Huu ◽  
Cristina Sissa ◽  
Francesca Terenziani ◽  
Anna Painelli
Keyword(s):  
Charge Transfer ◽  
Symmetry Breaking ◽  
Spectral Properties ◽  
Organic Dyes ◽  
Optical Spectra ◽  
Effective Model ◽  
Condensed Phases ◽  
Electronic Polarizability ◽  
Symmetry Breaking Phenomena

An effective model is presented to account for the effects of the medium electronic polarizability on spectral properties and on symmetry-breaking phenomena in charge-transfer dyes.

Fluorescence Anisotropy Spectra Disclose the Role of Disorder in Optical Spectra of Branched Intramolecular-Charge-Transfer Molecules

2011 ◽  
Vol 115 (21) ◽  
pp. 7009-7020 ◽  
Author(s):  
Cristina Sissa ◽  
Anna Painelli ◽  
Mireille Blanchard-Desce ◽  
Francesca Terenziani
Keyword(s):  
Charge Transfer ◽  
Fluorescence Anisotropy ◽  
Intramolecular Charge Transfer ◽  
Optical Spectra ◽  
Anisotropy Spectra

The role of intramolecular charge transfer and symmetry breaking in the photophysics of pyrrolo[3,2-b]pyrrole-dione

2018 ◽  
Vol 20 (34) ◽  
pp. 22260-22271 ◽  
Author(s):  
Mariusz Tasior ◽  
Khaled Hassanein ◽  
Leszek M. Mazur ◽  
Ioanna Sakellari ◽  
David Gray ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Symmetry Breaking ◽  
Intramolecular Charge Transfer

This paper reveals structurally unique π-expanded pyrrolo[3,2-b]pyrrole and its non-typical photophysical behaviour.

Dynamic adjustment of emission from both singlets and triplets: the role of excited state conformation relaxation and charge transfer in phenothiazine derivates

2021 ◽  
Author(s):  
Weidong Qiu ◽  
Xinyi Cai ◽  
Mengke Li ◽  
Liangying Wang ◽  
Yanmei He ◽  
...  
Keyword(s):  
Excited State ◽  
Charge Transfer ◽  
Intramolecular Charge Transfer ◽  
Dynamic Adjustment ◽  
Twisted Intramolecular Charge Transfer

Dynamic adjustment of emission behaviours by controlling the extent of twisted intramolecular charge transfer character in excited state.

Centrosome Aurora A gradient ensures single polarity axis in C. elegans embryos

2020 ◽  
Vol 48 (3) ◽  
pp. 1243-1253 ◽  
Author(s):  
Sukriti Kapoor ◽  
Sachin Kotak
Keyword(s):  
Symmetry Breaking ◽  
Cell Fate ◽  
Cell Cortex ◽  
Axis Formation ◽  
Aurora A Kinase ◽  
Aurora A ◽  
C Elegans ◽  
Cell Embryo ◽  
Polarity Establishment

Cellular asymmetries are vital for generating cell fate diversity during development and in stem cells. In the newly fertilized Caenorhabditis elegans embryo, centrosomes are responsible for polarity establishment, i.e. anterior–posterior body axis formation. The signal for polarity originates from the centrosomes and is transmitted to the cell cortex, where it disassembles the actomyosin network. This event leads to symmetry breaking and the establishment of distinct domains of evolutionarily conserved PAR proteins. However, the identity of an essential component that localizes to the centrosomes and promotes symmetry breaking was unknown. Recent work has uncovered that the loss of Aurora A kinase (AIR-1 in C. elegans and hereafter referred to as Aurora A) in the one-cell embryo disrupts stereotypical actomyosin-based cortical flows that occur at the time of polarity establishment. This misregulation of actomyosin flow dynamics results in the occurrence of two polarity axes. Notably, the role of Aurora A in ensuring a single polarity axis is independent of its well-established function in centrosome maturation. The mechanism by which Aurora A directs symmetry breaking is likely through direct regulation of Rho-dependent contractility. In this mini-review, we will discuss the unconventional role of Aurora A kinase in polarity establishment in C. elegans embryos and propose a refined model of centrosome-dependent symmetry breaking.

Bardeen Limit and Non-integer S Regimes at Organic/Metal Interfaces: A Role of Spontaneous Charge Transfer

2008 ◽  
Author(s):  
Yusuke Tanaka ◽  
Kaname Kanai ◽  
Yukio Ouchi ◽  
Kazuhiko Seki
Keyword(s):  
Charge Transfer ◽  
Organic Metal ◽  
Metal Interfaces

scholarly journals Role of symmetry mismatch, charge transfer and low dimensionality in the magnetic order of CaMnO3/SrTiO3 ultrathin heterostructures

AIP Advances ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 025319
Author(s):  
M. A. Barral ◽  
A. M. Llois ◽  
S. Di Napoli
Keyword(s):  
Charge Transfer ◽  
Magnetic Order ◽  
Low Dimensionality

A RELATIVISTIC EFFECTIVE MODEL WITH PARAMETERIZED COUPLINGS FOR NEUTRON STARS: THE ROLE OF ANTIKAON CONDENSATES

2011 ◽  
Vol 20 (supp02) ◽  
pp. 133-139
Author(s):  
ALEXANDRE MESQUITA ◽  
MOISÉS RAZEIRA ◽  
DIMITER HADJIMICHEF ◽  
CÉSAR A. Z. VASCONCELLOS ◽  
ROSANA O. GOMES ◽  
...  
Keyword(s):  
Neutron Stars ◽  
Coupling Constants ◽  
Effective Model ◽  
Extended Model ◽  
Many Body ◽  
Parametric Dependence ◽  
Interaction Terms ◽  
Coupling Terms ◽  
Effective Models

We study the effects of antikaon condensates in neutron stars in the framework of a relativistic effective model with derivative couplings which includes genuine many-body forces simulated by nonlinear interaction terms involving scalar-isoscalar (σ, σ*), vector-isoscalar (ω, ɸ), vector-isovector (ϱ), scalar-isovector (δ) mesons. The effective model presented in this work has a philosophy quite similar to the original version of the model with parameterized couplings. But unlike that, in which the parametrization is directly inserted in the coupling constants of the Glendenning model, we present here a method for the derivation of the parametric dependence of the coupling terms, in a way that allows in one side to consistently justify this parametrization and in the other to extend in a coherent way the range of possibilities of parameterizations in effective models with derivative couplings. The extended model is then applied to the description of the mass of neutron stars.

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