A Novel Molecular Design Strategy for Efficient Two-Photon Absorption Materials

Title:A Novel Molecular Design Strategy for Efficient Two-Photon Absorption Materials

Volume: 13 Issue: 14

Author(s): Jun Kawamata and Yasutaka Suzuki

Affiliation:

Keywords: Azulene, detuning energy, fluorophore, transition dipole moment, two-photon excitation microscopy, two-photon absorption, one-photon absorption (OPA), excitation photons, phenomenon, damping factor, electron donor (D), dimethylsulfoxide, chloroform, threedimensional (3D)

Abstract: This paper describes a novel molecular design strategy for obtaining efficient two-photon absorption (TPA) materials. The most popular strategy for enhancing the TPA cross-section (σ(2)) of a molecule is to enhance its transition dipole moment. However, this strategy also red shifts the one-photon absorption (OPA) band. Consequently, molecules with large transition dipole moments typically exhibit strong OPA at visible wavelengths, making it difficult to use such molecules for TPA-related applications in the visible wavelength region. Therefore, an alternative molecular design principle for TPA materials to enhance the transition dipole moment is strongly required. The present paper describes a novel molecular design strategy for reducing the detuning energy by incorporating an azulenyl moiety in a large, planar π- electron system. This strategy enhances σ(2) without significantly red shifting the OPA band.

Cite this article as:

Kawamata Jun and Suzuki Yasutaka, A Novel Molecular Design Strategy for Efficient Two-Photon Absorption Materials, Current Pharmaceutical Biotechnology 2012; 13 (14) . https://dx.doi.org/10.2174/138920101314151120122544