Novel red light-emitting two-photon absorption compounds with large Stokes shifts for living cell imaging

Temperature-Modulated Evolution of Surface Structures Induces Significant Enhancement of Two-Photon Fluorescent Emission from a Dye Molecule

“…10,35 Compared with one-photon fluorescence, TPF offers the advantage of lower photodamage and photobleaching to biological samples as well as enhanced axial depth discrimination and image contrast. 35 Therefore, the significant TPF enhancement observed from D289 can greatly promote its sensing and imaging applications. However, understanding the reason for the TPF enhancement, as well as the molecular behaviors and kinetics corresponding to the change in TPF emission, is necessary first.…”

“…It is known that TPF has been widely applied in imaging and sensing applications. , Compared with one-photon fluorescence, TPF offers the advantage of lower photodamage and photobleaching to biological samples as well as enhanced axial depth discrimination and image contrast . Therefore, the significant TPF enhancement observed from D289 can greatly promote its sensing and imaging applications.…”

Butterfly wing type new push–pull A–π–D–π–A organic fluorophore: synthesis, photophysical, DFT and nonlinear optical property studies

“…A great number of reports on NLO have been based on the above push–pull architecture both experimentally and computationally, but only a very limited number of investigations on PTZ have been reported with the particular A–π–D–π–A-type molecular configuration combined with a good NLO response. 27–29 In designing new organic molecules with novel donor and acceptor units for enhanced nonlinear optical (NLO) absorption, certain strategies must be adopted. For a molecule to show good NLO, the following structural aspects play a key role: (i) π-bridge units that connect donor and acceptor, (ii) extending the length of π-conjugation, (iii) coplanarity of the structure, (iv) facile interaction between the donor and acceptor, and (v) essential charge transfer and effective ICT.…”