The Study on the Optical Characteristics of G4-48 Azo Dendrimer by Langmuir-Blodgett Method

Kim, Jung Myoung; Shin, Hoon Kyu; Park, Eunmi; Kim, Chung Kyun; Kwon, Young−Soo

doi:10.1080/713738499

Cited by 3 publications

(1 citation statement)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…We can easily imagine that dendrimers with azo chromophores (azodendrimers) in the internal structure and on peripheries are quite intriguing research aspects in material science and applications. Namely, photo-irradiation onto azodendrimers exerts not only the trans-cis conformational change of azo moiety but also the dendrimer structure, which brings about a variety of functions [6]; switching device or data storage using Langmuir-Blodgett films of azodendrimer molecules [7], active materials for electro-optic applications [8], LC photo-orientation [9], photo-controlled chirooptics [10], and enhanced optical nonlinearity [11]. We found some additional benefits by introducing azo linkages into our dendrimers.…”

Section: Introductionmentioning

confidence: 99%

Azodendrimers as a Functional Material

Takezoe¹,

Haba²

2018

Dendrimers - Fundamentals and Applications

View full text Add to dashboard Cite

Dendrimers can behave as active functional materials, if they are substituted at their tail ends by azo groups. The dendrimers we developed spontaneously attach to interfaces or surfaces, providing us with a variety of functions. After describing the synthesis of dendrimers and azodendrimers, we first review functions for static uses; alignment surface for liquid crystals (LCs). Then, a major part of this review is devoted to the introduction for dynamic uses. Because of photo-induced trans-cis isomerization, the azodendrimers act as a command surface, which enables us to control LC orientation. Azodendrimer layers were formed at glass substrates, LC droplets in polymers, and surfaces of microparticles in LCs. Photo-controlled trans-and cis-forms, respectively, provide homeotropic and planar orientations of LCs. The photo-irradiation induces dewetting of dendrimer layers as well. Photo-induced orientation changes of LCs provide us with various applications and novel phenomena; photo-controlled macroscopic physical properties such as thermal transport, defect structure changes in LC colloids and LC systems with microinclusions, and even dynamics of inclusions in LCs.

show abstract

Section: Introductionmentioning

confidence: 99%

Azodendrimers as a Functional Material

Takezoe¹,

Haba²

2018

Dendrimers - Fundamentals and Applications

View full text Add to dashboard Cite

show abstract

Synthesis, Fluorescence and Photoisomerization Studies of Azobenzene‐Functionalized Poly(alkyl aryl ether) Dendrimers

Nithyanandhan

Jayaraman

Davis

et al. 2004

Chemistry A European J

View full text Add to dashboard Cite

A series of azobenzene-functionalized poly(alkyl aryl ether) dendrimers have been synthesized and their photochemical and photophysical properties in solution and as thin films have been investigated. Although the photochemical behavior of the azodendrimers in solution indicated that the azobenzene units behave independently, very similar to the constituent monomer azobenzene unit, the properties of thin solid films of the dendrimers were distinctly different. The azodendrimers, AzoG1, AzoG2, and AzoG3 were observed to form stable supercooled glasses, which showed long-wavelength absorption and red emission characteristics of J-aggregates of the azobenzene chromophores. Reversible photoinduced isomerization of the azodendrimers in the glassy state is described.

show abstract

Stimuli-responsive dendritic structures: The case of light-driven azobenzene-containing dendrimers and dendrons

Deloncle

Caminade

2010

Journal of Photochemistry and Photobiology C: Photochemistry Re

View full text Add to dashboard Cite

The Study on the Optical Characteristics of G4-48 Azo Dendrimer by Langmuir-Blodgett Method

Cited by 3 publications

References 0 publications

Azodendrimers as a Functional Material

Azodendrimers as a Functional Material

Synthesis, Fluorescence and Photoisomerization Studies of Azobenzene‐Functionalized Poly(alkyl aryl ether) Dendrimers

Stimuli-responsive dendritic structures: The case of light-driven azobenzene-containing dendrimers and dendrons

Contact Info

Product

Resources

About