Two-photon absorption and effective broadband optical power limiting properties of a multi-branched chromophore containing 2,3-diarylquinoxalinyl moieties as the electron-pulling units

A Theoretical Study of One- and Two-Photon Activity of D-Luciferin

“…Additionally, the different selection rules obeyed by the TPA process makes it efficient for accessing those excited states which are otherwise inaccessible. These features make the TP active materials highly demanding for many applications, including optical power limiting [3], photodynamic therapy [4,5], lithography [6], micro fabrication [7], and three-dimensional (3D) optical data storage [8]. The unprecedented surge of research interest in this area has been focused on finding out the proper design principle, followed by the synthesis of molecules with large TPA cross-section.…”

“…This is guided by a number of factors, such as conjugation length [9,10], donor/acceptor (D/A) strength [11,12], molecular symmetry [13], through space charge transfer interaction [14], branching of diploes and quadrupoles [15], formation of excitons and the open-shell character of the biradical systems [16]. The potential application of D/A substituted trans-stilbene in optical power limiting was pointed out by Albota et al [3]. Prasad et al [17] have reported many chromophores as TP active materials.…”

Combined experimental and theoretical study of one- and two-photon absorption properties of D–π–A–π–D type bis(carbazolylfluorenylethynyl) arene derivatives: Influence of aromatic acceptor bridge

“…Development of organic materials displaying high two-photon absorption (2PA) [1e6] has attracted great interest in the past decade due to various potential applications in photonics and optoelectronics, such as three-dimensional optical data storage [7,8], photochromic switches [9], fluorescence imaging [10], multiphoton fabrication [11], two-photon optical power limiting [12,13], and photodynamic therapy [14,15], among others. Chromophores with strong 2PA are desired for all these applications, because a higher degree of excitation can be achieved with lower laser intensity.…”

Fluorenylethynylpyrene derivatives with strong two-photon absorption: influence of substituents on optical properties

“…Development of organic materials with large two-photon absorption (2PA) [1][2][3][4][5][6][7][8][9] cross-sections (d) has attracted great interest in the past decade due to various potential applications in photonics and optoelectronics, such as three-dimensional optical data storage, 10,11 photochromic switches, 12 fluorescence imaging, 13 multi-photon fabrication, 14 two-photon optical power limiting, 15,16 and photodynamic therapy, 17,18 among others. Fluorescent chromophores with large d are of paramount importance in two-photon fluorescence imaging of biological samples, as they have the advantages of reducing photo-induced damage, 19 increasing penetration depth, 20,21 enhancing the imaging resolution of turbid samples, 19,20 and diminishing cellular auto-fluorescence background.…”