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Bio-organic adaptive photonic crystals enable supramolecular solvatochromism

Nano Research 2023年第10期16卷 12092-12097页

作者： Jiahao Zhang Yan Zhang Yancheng Wang sigal rencus-lazar Deqing Mei Ehud Gazit Kai Tao State Key Laboratory of Fluid Power and Mechatronic Systems School of Mechanical EngineeringZhejiang UniversityHangzhou 310027China Zhejiang-Israel Joint Laboratory of Self-Assembling Functional Materials Hangzhou Global Scientific and Technological Innovation CentreZhejiang UniversityHangzhou 311200China Key Laboratory of Advanced Manufacturing Technology of Zhejiang Province School of Mechanical EngineeringZhejiang UniversityHangzhou 310027China The Shmunis School of Biomedicine and Cancer Research George S.Wise Faculty of Life SciencesTel Aviv UniversityTel Aviv 6997801Israel Department of Materials Science and Engineering Iby and Aladar Fleischman Faculty of EngineeringTel Aviv UniversityTel Aviv 6997801Israel

Photonic crystals(PCs)exhibit promising structural coloration properties and possess extensive application prospects in diverse optical ***,state-of-the-art inorganic or polymeric PCs show limited adaptivity as their configurations are fixed once ***,bio-organic adaptive PCs are fabricated via drop-casting of amphiphilic guanine-based peptide nucleic acid selfassembled *** high formation activation energy of up to 81.8 kJ·mol−1 suggests that the self-assembly step dominates the entire ***,the configurations along with the structural coloration of the supramolecular PCs are sensitive to self-assembly influencing parameters,showing temperature-encoded structural color evolution and solvent polaritydependent *** findings demonstrate that the supramolecular PCs are adaptive,thus showing promising potential for detection of organic solvents of different polarities in a visual and real-time manner for environmental protection or optical applications.

关键词： peptide nucleic acids molecular manufacturing supramolecular photonic crystals solvatochromic effects adaptivity

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Rational Design of Biological Crystals with Enhanced Physical Properties by Hydrogen Bonding Interactions

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Research 2023年第3期2023卷 659-668页

作者： Hui Yuan Bin Xue Dingyi Yang sigal rencus-lazar Yi Cao Ehud Gazit Dan Tan Rusen Yang School of Advanced Materials and Nanotechnology Xidian UniversityXi’an 710126China The Shmunis School of Biomedicine and Cancer Research George S.Wise Faculty of Life SciencesDepartment of Materials Science and EngineeringThe Iby and Aladar Fleischman Faculty of EngineeringTel Aviv UniversityTel Aviv 6997801Israel National Laboratory of Solid State Microstructure Department of PhysicsNanjing UniversityNanjing 210093JiangsuChina

Hydrogen bonds are non-covalent interactions and essential for assembling supermolecules into ordered structures in biological systems,endowing crystals with fascinating physical properties,and inspiring the construction of eco-friendly electromechanical ***,the interplay between hydrogen bonding and the physical properties is not fully understood at the molecular ***,we demonstrate that the physical property of biological crystals with double-layer structures could be enhanced by rationally controlling hydrogen bonding interactions between amino and carboxyl *** hydrogen bonding interactions result in various thermal,mechanical,electronic,and piezoelectric *** particular,the weak interaction between O and H atoms contributes to low mechanical strength that permits important ion displacement under stress,giving rise to a strong piezoelectric *** study not only reveals the correlation between the hydrogen bonding and physical properties in double-layer structures of biological crystals but also demonstrates the potential of these crystals as functional biomaterials for high-performance energy-harvesting *** calculations and experimental verifications in this work provide new insights into the rational design of biomaterials with desirable physical properties for bioelectrical devices by modulating intermolecular interactions.

关键词： bonding rational biomaterials

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