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[HS-(CH2)11-O]2-azobenzene (DT 003)


This is a truly unique molecule that can crosslink NPs upon light stimulus. When the nanoparticles are stabilized by surfactants (e.g., dodecylamine, DDA) and this dithiol is added, spontaneous nanoparticle crosslinking is entropically unfavorable. When, however, the sample is exposed to UV light, the central azobenzene group isomerizes into the so-called cis-form characterized by the presence of electric dipole (ca. 4 debye). The dipole-dipole forces between dithiols on different NPs bring these nanoparticles close together and allow the terminal thiolate groups to crosslink the NPs into either supraspheres (Science 2007, 316, 261-264) or into crystalline aggregates (Proc. Natl. Acad. Sci. U.S.A. 2007, 104, 10305-10309). In this way, light stimulus effectively controls and directs nanoscale self-assembly. A very unique compound, indeed!

Standard Products

name catalog no. m n weight price
[HS-C11-O]2-azobenzene DT 003-0.1 100 mg Log in to see the prices
[HS-C11-O]2-azobenzene DT 003-0.2 200 mg
[HS-C11-O]2-azobenzene DT 003-0.5 500 mg

Custom synthesis variants

Note, if none of the listed structures fit your specific requirements, please submit your own structure formula within our custom synthesis contact form by clicking button below.

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