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journal article·2022-02Open access

Visualizing Assembly Dynamics of All‐Liquid 3D Architectures

Pei‐Yang Gu, Paul Y. Kim, Yu Chai, Paul D. Ashby, Qing‐Feng Xu, Feng Liu, Qun Chen, Jian‐Mei Lu, Thomas P. Russell

Small· Volume 18· Issue 6
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Source abstract

Abstract

Abstract To better exploit all‐liquid 3D architectures, it is essential to understand dynamic processes that occur during printing one liquid in a second immiscible liquid. Here, the interfacial assembly and transition of 5,10,15,20‐tetrakis(4‐sulfonatophenyl) porphyrin (H6TPPS) over time provides an opportunity to monitor the interfacial behavior of nanoparticle surfactants (NPSs) during all‐liquid printing. The formation of J‐aggregates of H4TPPS2− at the interface and the interfacial conversion of the J‐aggregates of H4TPPS2− to H‐aggregates of H2TPPS4− is demonstrated by interfacial rheology and in situ atomic force microscopy. Equally important are the chromogenic changes that are characteristic of the state of aggregation, where J‐aggregates are green in color and H‐aggregates are red in color. In all‐liquid 3D printed structures, the conversion in the aggregate state with time is reflected in a spatially varying change in the color, providing a simple, direct means of assessing the aggregation state of the molecules and the mechanical properties of the assemblies, linking a macroscopic observable (color) to mechanical properties.
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Research context

NanomaterialsMaterials processing

OpenAlex topics: Spectroscopy and Quantum Chemical Studies · Lipid Membrane Structure and Behavior · Photoreceptor and optogenetics research

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology School of Petrochemical Engineering Changzhou University Changzhou 213164 P. R. China

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

Materials Sciences Division Lawrence Berkeley National Laboratory 1 Cyclotron Road Berkeley CA 94720 USA

Department of Physics City University of Hong Kong Hong Kong China

Molecular Foundry Lawrence Berkeley National Laboratory 1 Cyclotron Road Berkeley CA 94720 USA

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

Polymer Science and Engineering Department University of Massachusetts Amherst MA 01003 USA

Beijing Advanced Innovation Center for Soft Matter Science and Engineering Beijing University of Chemical Technology Beijing 100029 China

Funding

U.S. Department of Energy · Office of Science · Basic Energy Sciences · Army Research Office · National Natural Science Foundation of China

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