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Updated: Jul 10, 2026
Microfluidic Fabrication of Polymeric and Biohybrid Fibers with Predesigned Size and Shape
Published on: January 8, 2014
Light-driven rheological modulation of solventless polymer networks enabled by precisely architected flexible star
Satoshi Honda1,2, Yi Zhang1, Masaru Tanaka1
1Institute for Materials Chemistry and Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0385, Japan. shonda@ms.ifoc.kyushu-u.ac.jp.
None:
We report the synthesis and photoresponsivity of precisely designed liquid star-shaped poly(dimethyl siloxane) (PDMS) with anthracene end groups. Owing to the efficient end-linking of the flexible PDMS arms upon the first UV irradiation (λ = 365 nm, UV365), the storage modulus (G') increased from 4.7 Pa to 119 kPa (>25 000-fold), and the physical state became a rubbery solid. Subsequent irradiation with UV light at a shorter wavelength (λ = 254 nm, UV254) decreased G' toward the photostationary state, and viscoelasticity modulation was achieved between the two photostationary states under solvent-free conditions.
