Polymers films with indandione derivatives as alternatives to azobenzene polymers for optical patterning

Phototriggered micromanufacturing using photoresponsive amorphous spirooxazine films

“…36 On the other hand, easy fabrication of SRGs of non-azobenzene photochromic compounds has remained challenging and only some papers have been published so far. [37][38][39][40][41][42] In order to broaden the application field of SRGs as optical elements, our study focuses on photoinduced SRG formation on films containing photochromic compounds other than azobenzenes in which one of the two stable isomers is colorless. [39][40][41][42] Recently, reversible SRG formation, in which SRG can be erased by heating and reconstructed by spatially patterned irradiation, has been attained by using low-molecular-weight spirooxazine (SO), which can form an amorphous film without a polymer matrix.…”

Highly Sensitive Formation of Stable Surface Relief Structures in Bisanthracene Films with Spatially Patterned Photopolymerization

“…Therefore, research on a new class of SRG-forming materials other than azobenzene has commenced and several papers have been published to date. − In particular, colorless SRG-forming materials are desired to broaden the application field of SRGs as optical elements. From a practical viewpoint, it is desirable for SRG formation to be highly photosensitive and for the resultant SRG structure to be highly stable.…”

Unconventional Approaches to Light-Promoted Dynamic Surface Morphing on Polymer Films

“…3.2.1 Systems in Response to Polarized Light: Stiller et al 161 focused on indanedione derivatives as an alternative photoresponsive SRG-forming material to azobenzene (Figure 21a). Indanedione derivatives have two energetically equivalent ground-state structures in which the indanedione and aminobenzene moieties are in a planar configuration, but the intramolecular electron-transfer state, in which the indanedione and aminobenzene moieties are twisted, is generated by photoexcitation.…”