scholarly journals Two-photon absorption and two-photon-induced isomerization of azobenzene compounds

RSC Advances ◽  
2020 ◽  
Vol 10 (66) ◽  
pp. 40489-40507
Author(s):  
Marta Dudek ◽  
Nina Tarnowicz-Staniak ◽  
Marco Deiana ◽  
Ziemowit Pokładek ◽  
Marek Samoć ◽  
...  
Keyword(s):  
Organic Molecules ◽  
Life Sciences ◽  
Photon Absorption ◽  
Two Photon Absorption ◽  
Two Photon ◽  
Wide Range ◽  
Azobenzene Derivatives

The process of two-photon-induced isomerization occurring in various organic molecules, among which azobenzene derivatives hold a prominent position, offers a wide range of functionalities, which can be used in both material and life sciences.

scholarly journals Progresses on the Use of Two-Photon Absorption Laser Induced Fluorescence (TALIF) Diagnostics for Measuring Absolute Atomic Densities in Plasmas and Flames

Plasma ◽  
2021 ◽  
Vol 4 (1) ◽  
pp. 145-171
Author(s):  
Kristaq Gazeli ◽  
Guillaume Lombardi ◽  
Xavier Aubert ◽  
Corinne Y. Duluard ◽  
Swaminathan Prasanna ◽  
...  
Keyword(s):  
Optical Transition ◽  
Thin Film Deposition ◽  
Laser Induced Fluorescence ◽  
Film Deposition ◽  
Stimulated Emission ◽  
Photon Absorption ◽  
Collisional Quenching ◽  
Two Photon Absorption ◽  
Two Photon ◽  
Wide Range

Recent developments in plasma science and technology have opened new areas of research both for fundamental purposes (e.g., description of key physical phenomena involved in laboratory plasmas) and novel applications (material synthesis, microelectronics, thin film deposition, biomedicine, environment, flow control, to name a few). With the increasing availability of advanced optical diagnostics (fast framing imaging, gas flow visualization, emission/absorption spectroscopy, etc.), a better understanding of the physicochemical processes taking place in different electrical discharges has been achieved. In this direction, the implementation of fast (ns) and ultrafast (ps and fs) lasers has been essential for the precise determination of the electron density and temperature, the axial and radial gradients of electric fields, the gas temperature, and the absolute density of ground-state reactive atoms and molecules in non-equilibrium plasmas. For those species, the use of laser-based spectroscopy has led to their in situ quantification with high temporal and spatial resolution, with excellent sensitivity. The present review is dedicated to the advances of two-photon absorption laser induced fluorescence (TALIF) techniques for the measurement of reactive species densities (particularly atoms such as N, H and O) in a wide range of pressures in plasmas and flames. The requirements for the appropriate implementation of TALIF techniques as well as their fundamental principles are presented based on representative published works. The limitations on the density determination imposed by different factors are also discussed. These may refer to the increasing pressure of the probed medium (leading to a significant collisional quenching of excited states), and other issues originating in the high instantaneous power density of the lasers used (such as photodissociation, amplified stimulated emission, and photoionization, resulting to the saturation of the optical transition of interest).

Computational design of two-photon active organic molecules for infrared responsive materials

2020 ◽  
Vol 8 (29) ◽  
pp. 9867-9873 ◽  
Author(s):  
Robert Zaleśny ◽  
Md. Mehboob Alam ◽  
Paul N. Day ◽  
Kiet A. Nguyen ◽  
Ruth Pachter ◽  
...  
Keyword(s):  
Optical Properties ◽  
Organic Molecules ◽  
Computational Design ◽  
Photon Absorption ◽  
Organic Cations ◽  
Design Rules ◽  
Responsive Materials ◽  
Two Photon Absorption ◽  
Two Photon

Aiming at proposing design rules, the mechanism of two-photon absorption is analyzed in a series of π-conjugated organic cations and their neutral precursors exhibiting aggregation-enhanced optical properties.

Two-Photon Absorption and Excited State Dynamics of Two Organic Molecules Containing Donor/Acceptor Moieties

2008 ◽  
Vol 25 (7) ◽  
pp. 2456-2459 ◽  
Author(s):  
Yan Yong-Li ◽  
Li Bo ◽  
Liu Kang-Jun ◽  
Dong Zhi-Wei ◽  
Ma Guo-Hong ◽  
...  
Keyword(s):  
Excited State ◽  
Organic Molecules ◽  
Photon Absorption ◽  
Excited State Dynamics ◽  
Two Photon Absorption ◽  
Two Photon ◽  
Donor Acceptor

Fluorescence of organic molecules in the microcavity at two-photon absorption

2006 ◽  
Author(s):  
Elena E. Bykova ◽  
Alexander A. Zemlyanov ◽  
Yuri E. Geints
Keyword(s):  
Organic Molecules ◽  
Photon Absorption ◽  
Two Photon Absorption ◽  
Two Photon
Sign in / Sign up

Export Citation Format

Share Document