Surfactant-Induced Interfacial Aggregation of Porphyrins for Structuring Color-Tunable Liquids

Pei-Yang Gu^1,2, Ganhua Xie², Paul Y. Kim², Yu Chai^2,3, Xuefei Wu⁵, Yufeng Jiang², Qing-Feng Xu¹, Feng Liu⁴, Jian-Mei Lu^1,*（路建美）, and Thomas P. Russell^2,5,*

¹College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation, Center of Suzhou Nano Science and Technology, Soochow University，Suzhou 215123 (China)

²Materials Sciences Division, Lawrence Berkeley National Laboratory，1 Cyclotron Road, Berkeley, CA 94720 (USA)

³Molecular Foundry, Lawrence Berkeley National Laboratory，1 Cyclotron Road, Berkeley, CA 94720 (USA)

⁴Department of Physics and Astronomy, Collaborative Innovation Center of IFSA (CICIFSA), Shanghai Jiaotong University，Shanghai 200240 (P. R. China)

⁵Polymer Science and Engineering Department, University of Mas，sachusetts Amherst, MA 01003 (USA) and Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology，Beijing 100029 (China)

Angew. Chem. Int. Ed.2021, 60, 2871--2876

Locking nonequilibrium shapes of liquids into targeted architectures by interfacial jamming of nanoparticles is an emerging area in material science. 5,10,15,20‐tetrakis(4‐sulfonatophenyl) porphyrin (H₆TPPS) shows three different aggregation states that present an absorption imaging platform to monitor the assembly and jamming of supramolecular polymer surfactants (SPSs) at the liquid/liquid interface. The interfacial interconversion of H₆TPPS, specifically H₄TPPS²⁻ dissolved in water, from J‐ to an H‐aggregation was induced by strong electrostatic interactions with amine‐terminated polystyrene dissolved in toluene at the water/toluene interface. This resulted in color‐tunable liquids due to interfacial jamming of the SPSs formed between H₄TPPS²⁻ and amine‐terminated polystyrene. However, the formed SPSs cannot lock in nonequilibrium shapes of liquids. In addition, a self‐wrinkling behavior was observed when amphiphilic triblock copolymers of PS‐block‐poly(2‐vinylpyridine)‐block‐poly(ethylene oxide) were used to interact with H₄TPPS²⁻. Subsequently, the SPSs formed can lock in nonequilibrium shapes of liquids.

链接：https://onlinelibrary.wiley.com/doi/epdf/10.1002/anie.202012742