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

Abstract

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.

Two-photon absorption of 28-hetero-2,7-naphthiporphyrins: expanded carbaporphyrinoid macrocycles

“…The two-photon absorption properties have been determined using the Z-scan technique. 95 The experiments were performed over a wide range of wavelengths (800–1600 nm), achieved by employing an Astrella Ti : Sapphire amplifier (output wavelength 800 nm) pumping a TOPAS Prime optical parametric amplifier equipped with a NirUVis frequency mixer, which delivered wavelength tunable pulses with a duration of about 50 fs and the repetition rate of 1 kHz. The output beam was selected with a polarization separator and attenuated using neutral density filters.…”

Crystal structure and Hirshfeld surface analysis of 1-[(E)-2-(5-chloro-2-hydroxyphenyl)hydrazin-1-ylidene]naphthalen-2(1H)-one

“…Apart from their use as colourants, azo compounds have attracted a lot of attention from chemists as their potential applications are important in coordination chemistry (Asha & Mandal, 2018), metal-organic frameworks (MOFs) (Huang et al, 2017), covalent-organic frameworks (COFs) (Chandra et al, 2014) and catalysis (Choudhary et al, 2017). In addition, they have found many applications in different fields such as non-linear optics (Dudek et al, 2020), optical storage (Kovalchuk et al, 2020), photoluminescence (He et al, 2019), chemosensors (Akram et al, 2020) and magnetism (Nandi et al, 2021). They are used not only in physics but also in the biomedical and pharmacological fields as they can offer new therapeutic properties such as antiviral (Chhetri et al, 2021), antimicrobial (Kyei et al, 2020), anti-inflammatory and antioxidant (Unnisa et al, 2020).…”

Stimuli-responsive Enaminitrile Molecular Switches as Tunable AIEgens Covering the Chromaticity Space and Acting as Vapor Sensors

“…In particular, the configurational cis/trans-change of carbon-carbon double bonds provides an indispensable tool for a wide variety of applications in biology, materials science, supramolecular and organic chemistry, etc. [6,[11][12][13][14][15][16][17][18] Upon external input, such as irradiation, metalation, or pH changes, the properties of entities bearing responsive moieties, and also the properties of the entire systems, can be practicably modulated at discretion. [10,[19][20][21][22][23][24][25] Of the many potential applications based on these entities, materials that display controllable luminescence under external control are of particular interest.…”