Bis(phenyltriazolyl)nitroaniline: Click-derived functional materials with highly-transparent and stable two-photon absorption property

A symmetrical, almost linear and planar motif 2,6-bis(1-phenyl-1,2,3-triazol-4-yl)-4-nitroaniline have been designed and synthesized by click chemistry. The synthesis of this novel structure is straightforward and inexpensive. Two kinds of polymorphic crystals are obtained in different solvents, suggesting the versatile intra- and intermolecular interactions. Theoretical calculation was used to study the linear absorption spectrum, which show good agreement with the experimental results. Linear optical property shows an absorption band centered at 368 nm. Nonlinear optical property displays a two-photon absorption cross sections around 200 GM under different power intensities. Therefore, this novel click-derived chromophore exhibits highly-transparent and stable two-photon absorption property. (C) 2018 Elsevier B.V. All rights reserved.