Abstract
AbstractA set of small star‐shaped chromophores composed of three fluorene‐based congeners have been synthesized and shown experimentally to possess strong and widely dispersed two‐photon absorptivities in the visible to near‐IR region under the irradiation of femtosecond and nanosecond laser pulses. In addition, the number of electron‐donating fluorenyl units incorporated in the final structure was closely connected to the molecular two‐photon activities of these model compounds. Effective optical power attenuation and stabilization behaviors of these dye molecules in the nanosecond time domain were also investigated. The results indicate that such a structural motif could be useful in the molecular design of strong two‐photon absorbing material systems for quick‐responding and broadband optical suppressing‐related applications, particularly for laser pulses with long durations in the near‐IR region.
Published Version (Free)
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.