Unlocking the Remarkable Influence of Intramolecular Group Rotation for Third‐order Nonlinear Optical Properties
| Autor: | Yujie Zhao, Qiong Xie, Kangshuai Geng, Linpo Yang, Yinglin Song, Hongwei Hou |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
010405 organic chemistry
Organic Chemistry Substituent General Chemistry 010402 general chemistry 01 natural sciences Biochemistry 0104 chemical sciences chemistry.chemical_compound Crystallography chemistry Intramolecular force Order (group theory) Methylene Absorption (chemistry) Isomerization Rotation (mathematics) Cis–trans isomerism |
| Zdroj: | Chemistry – An Asian Journal. 16:981-987 |
| ISSN: | 1861-471X 1861-4728 |
| Popis: | This work exposes for the first time the remarkable influence of intramolecular group rotation on third-order nonlinear optical (NLO) performance. In order to prove the role of group rotation, we designed and synthesized two photo-response compounds tetramethyl 5,5'-(((diazene-1,2-diylbis(4,1-phenylene))bis(oxy))bis (methylene)) diisophthalate (1) and 5,5'-(((diazene-1,2-diylbis(4,1-phenylene))bis(oxy))bis (methylene)) diisophthalic acid (2) and investigated their NLO performance under different substituent (benzyloxy group) rotation states. 1 and 2 have dynamic benzyloxy group rotation in dilute solution and shows reverse saturated absorption (RSA). When the benzyloxy group rotation of 1 and 2 was restricted by PMMA, their NLO performance not only converted into saturated absorption (SA) and NLO refraction behaviours, but also hardly changed after isomerization. Interestingly, we also restricted the benzyloxy group rotation in solution to a certain extent through photo-induced trans → cis isomerization, and found that the NLO performances of cis isomers of 1 and 2 exhibit SA and positive refraction and are similar to those of 1 -PMMA and 2 -PMMA. This work provides a new exploratory method for studying the influencing factors of third-order NLO performance. |
| Databáze: | OpenAIRE |
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