Photophysics and nonlinear absorption of 4,4′-diethynylazobenzene derivatives terminally capped with substituted aromatic rings

Liu, Rui; Li, Yuhao; Chang, Jin; Xiao, Qi; Sun, Wenfang

doi:10.1016/j.jphotochem.2012.04.021

Cited by 5 publications

(3 citation statements)

References 42 publications

(49 reference statements)

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“…There is a common strategy to realize the NLO process within an AB system by adding extended π‐conjugated systems, which results in ICT to realize triplet transient absorption. The ICT absorption bands change along with the π‐conjugation of the terminally capped aromatic rings 165 …”

Section: Main Contentsmentioning

confidence: 99%

“…23 In 2012, Liu et al reported a series of 4,4′-diethynyl-AB derivatives capped with substituted aromatic rings from 10a-f (Figure 4c). 38 The photophysical and nonlinear absorption properties of these compounds were systematically studied. Compound 10a with phenyl ring substitution had UV-vis absorption spectra similar to the type "amino-AB," whereas all other compounds showed a shoulder in the long-wavelength side of their absorption band related to intramolecular charge transfer (ICT).…”

Section: Extended π-Conjugated Systemsmentioning

confidence: 99%

“…The ICT absorption bands change along with the π-conjugation of the terminally capped aromatic rings. 165 In addition, introducing two-photon absorbance groups into AB compounds is an efficient method for introducing the NLO process.…”

Section: Nonlinear Optical Devicementioning

confidence: 99%

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Visible‐light‐switchable azobenzenes: Molecular design, supramolecular systems, and applications

et al. 2022

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Photocontrol of functional molecules and supramolecular systems provides promising directions for the development of innovative materials and technologies.Reversible photoswitches that can isomerize among different states play a vital role in such photoresponsive systems. However, the commonly used UV light for triggering the isomerization of photoswitches such as azobenzene (AB) has limited their applications in functional material systems because UV light penetrates poorly and causes damage to materials or biological tissues. Accordingly, tremendous endeavors have been devoted to the development of visible-light-switchable molecules and expand their new applications in various fields. Herein, we highlight the strategies of molecule design for visible-light-switchable ABs by discussing the effects of benzene substituents on the absorption spectrum. Based on this, visible-light-responsive supramolecular systems with metal-organic frames, cyclodextrins, nanoparticles, and biomolecules (DNAs, peptides, and proteins) are elaborated. Then, the light-responsive mechanical properties and their emerging applications in actuators, biological systems, information storage, energy storage, nonlinear optical devices, and photoswitchable adhesives are discussed. Finally, a summary of the challenges and perspective on visible-light-switchable ABs are outlined.

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Section: Main Contentsmentioning

confidence: 99%

Section: Extended π-Conjugated Systemsmentioning

confidence: 99%