Issue 39, 2013
From the journal:

RSC Advances

Tuning two-photon absorption cross-sections for triphenylamine derivatives†

Zhen Fang,*ab   Richard D. Webster,c   Marek Samocde  and  Yee-Hing Lai*a  

* Corresponding authors

a National University of Singapore, Department of Chemistry, 3 Science Drive 3, Singapore
E-mail: fangzh78@unc.edu, chmlaiyh@nus.edu.sg

b Department of Chemistry, The University of North Carolina at Chapel Hill, Chapel Hill, NC, USA

c Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore

d Laser Physics Centre, Research School of Physics and Engineering, Australian National University, Canberra, ACT 0200, Australia

e Institute of Physical and Theoretical Chemistry, Wroclaw University of Technology, 50-370 Wroclaw, Poland

Abstract

A methylene bridge link connecting the ortho-positions within the triphenylamine scaffold increases the molecular planarity significantly. The one-photon spectroscopies of bridged triphenylamine molecules show considerable extended conjugation relative to their triphenylamine counterparts, leading to enhanced two-photon absorption (TPA) cross-sections. Various substituents at the scaffold have been prepared and studied. Using a femtosecond laser source Z-scan method, the TPA cross-sections were characterized. The maximum magnitude of the TPA cross-section is ∼4800 GM, which is four times that of its triphenylamine counterpart.

Graphical abstract: Tuning two-photon absorption cross-sections for triphenylamine derivatives

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Article information

DOI
https://doi.org/10.1039/C3RA42789G
Article type
Paper
Submitted
05 Jun 2013
Accepted
29 Jul 2013
First published
30 Jul 2013

RSC Adv., 2013,3, 17914-17917

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Tuning two-photon absorption cross-sections for triphenylamine derivatives

Z. Fang, R. D. Webster, M. Samoc and Y. Lai, RSC Adv., 2013, 3, 17914 DOI: 10.1039/C3RA42789G

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