Bioinspired Chestnut Burr-like Polyaniline: Achieving Superhydrophobicity and Excellent Microwave Transparency through Controlled Polymerization

ACS Applied Materials & Interfaces, Год журнала: 2025, Номер unknown

Опубликована: Янв. 29, 2025

Achieving dual functionalities of hydrophobicity and excellent microwave transmission in a single material remains significant challenge, especially for advanced applications aerospace, telecommunications, navigation engineering. Inspired by natural designs like chestnut burrs, bioinspired polyaniline (PANI) particles with tunable micro-/nanostructures through facile template-free polymerization process have been developed. By regulating the polarity reaction system, temperature, time, various hierarchical structures, including cross-linked nanosheets, burr-like spheres, starburst flower-like are synthesized. The spiny projections surface roughness endow unique structure, achieving superior properties. formation structures is driven intermolecular interactions during nucleation growth processes. presence both hydrophobic hydrophilic domains within PANI leads to coexistence large water contact angles up 152° high energy. optimized structure minimizes charge carrier mobility, dipole relaxation, dielectric loss. A efficiency 96% achieved these combined factors. disclosing relationship between wettability, properties, design protocol bionic regulation established achieve superhydrophobic microwave-transparent functions.

Язык: Английский

Synthesis of Aniline Unit-Based Optically Active Magnetic Conjugated Polymers

The Journal of Physical Chemistry B, Год журнала: 2025, Номер unknown

Опубликована: Фев. 17, 2025

In this study, we report the synthesis of polyaniline derivatives (para-, meta-, chiral meta-linked polyanilines, and a thiophene–aniline copolymer) using Buchwald–Hartwig reaction. The electrical conductivity analysis results sulfuric acid-doped meta- para-linked polyanilines indicate generation polarons (radical hole), whose delocalization is essential for conduction. Furthermore, in main chain associated with paramagnetism at high temperatures due to intramolecular interactions. A copolymer thiophene aniline, consisting an electron-rich affected by lone pairs S N atoms, exhibits despite neutral electronic state. Chiral was synthesized via combination Mitsunobu (introduction substituent into monomer), (Pd cross-coupling polycondensation), Tokumaru (oxidation m-chloroperoxybenzoic acid generate nitroxyl radicals chain) reactions. Circular dichroism measurement revealed that polymer optical activity. Magnetic measurements superconducting quantum interference device magnetism resultant polymers low temperatures. differences magnetic behaviors conductivities different conjugated structures provide new avenues molecular design science.

Язык: Английский

L-Pro functionalized carbon nanoclusters inducing an enantioselective voltammetric response to Trp and Tyr

Electrochimica Acta, Год журнала: 2025, Номер unknown, С. 145989 - 145989

Опубликована: Март 1, 2025

Язык: Английский