Pressure-induced polymerization and bandgap-adjustment of TPEPA

Han, Jun; Cui, Jieshun; Zheng, Qunfei; Yan, Zhipeng; Li, Yun; Chen, Jian; Yao, Xiaodong; Dai, Guangyang; Wang, Shanmin; Liu, Ying; Wang, Hsing‐Lin; Zhao, Yusheng; Zhu, Jinlong

doi:10.1039/d2ra01144a

Cited by 2 publications

(2 citation statements)

References 42 publications

(52 reference statements)

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“…Most high-pressure research on NPs has focused on inorganic and hybrid materials, while studies on molecular species under compression are relatively less explored. Recent progress on pressure-induced behavior studies of organic molecular and polymer species have been centered on optical property changes, e.g., emission enhancement under compression due to the aggregation induced emission (AIE) effects, and optical changes caused by crystal structure transformation, etc. − Furthermore, pressure-induced reactions of organic molecules have been relatively less studied, − but hold great promise for accessing novel materials unachievable through conventional means. The unlimited structural design space and rich knowledge in this seemingly “ancient branch” of chemistry, i.e., organic synthesis, will make studies of pressure-induced reactions of molecular species a vast testing ground, where new discoveries of reactivities and materials can be germinated.…”

Section: Discussionmentioning

confidence: 99%

Theoretical and Experimental Advances in High-Pressure Behaviors of Nanoparticles

Meng,

Vu,

Criscenti

et al. 2023

Chem. Rev.

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Using compressive mechanical forces, such as pressure, to induce crystallographic phase transitions and mesostructural changes while modulating material properties in nanoparticles (NPs) is a unique way to discover new phase behaviors, create novel nanostructures, and study emerging properties that are difficult to achieve under conventional conditions. In recent decades, NPs of a plethora of chemical compositions, sizes, shapes, surface ligands, and self-assembled mesostructures have been studied under pressure by in-situ scattering and/or spectroscopy techniques. As a result, the fundamental knowledge of pressure–structure–property relationships has been significantly improved, leading to a better understanding of the design guidelines for nanomaterial synthesis. In the present review, we discuss experimental progress in NP high-pressure research conducted primarily over roughly the past four years on semiconductor NPs, metal and metal oxide NPs, and perovskite NPs. We focus on the pressure-induced behaviors of NPs at both the atomic- and mesoscales, inorganic NP property changes upon compression, and the structural and property transitions of perovskite NPs under pressure. We further discuss in depth progress on molecular modeling, including simulations of ligand behavior, phase-change chalcogenides, layered transition metal dichalcogenides, boron nitride, and inorganic and hybrid organic–inorganic perovskites NPs. These models now provide both mechanistic explanations of experimental observations and predictive guidelines for future experimental design. We conclude with a summary and our insights on future directions for exploration of nanomaterial phase transition, coupling, growth, and nanoelectronic and photonic properties.

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Section: Discussionmentioning

confidence: 99%

Theoretical and Experimental Advances in High-Pressure Behaviors of Nanoparticles

Meng,

Vu,

Criscenti

et al. 2023

Chem. Rev.

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“…[51][52][53] Crystals of organic molecules containing reactive triple bonds have also been shown to polymerize under high pressure. [54][55] These studies prompted us to speculate that the topochemical cross-linking of PTA-CH proposed in Scheme 1 may become possible using pressure as the trigger of reaction.…”

Section: Introductionmentioning

confidence: 99%

Pressure-Induced Crystallization and Topochemical Cross-Linking of Polytriacetylene

Bian,

Hu,

Fan

et al. 2023

Preprint

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Topochemical reactions have been extensively studied in organic and polymer chemistry, and are conventionally triggered by heat and/or light. Pressure, as one of the fundamental thermodynamic parameters, has recently been applied to study phase transitions of inorganic and hybrid nanomaterials on both microscopic and macroscopic scales. Relatively fewer studies have been focused on high-pressure behaviors, especially pressure-induced reactions, on organic and polymer molecules and assemblies. Polytriacetylenes (PTAs) are unique conjugated polymers with all-carbon main-chains consisted of alternating double bonds and diacetylene units. Although diacetylene units are prime examples capable of light-induced topochemical polymerization into polydiacetylene, PTAs are found to be very stable under light irradiation. Here we report our observation that in a diamond anvil cell (DAC), applying low pressure leads to crystallization and ordering of PTAs bearing linear alkyl side-chains. Further increasing pressure leads to irreversible cross-linking reactions, resulting in materials of graphyne-like structures, appearances, optical properties, and solubilities. Findings in this paper thus reveal the potential of using pressure to guide conjugated polymer self-assembly and to induce chemical reactions toward new materials discoveries.

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Pressure-induced polymerization and bandgap-adjustment of TPEPA

Abstract: Organic solar cells have become an important development direction in solar cell materials because of their low cost, light weight, and good flexibility.

Cited by 2 publications

References 42 publications

Theoretical and Experimental Advances in High-Pressure Behaviors of Nanoparticles

Theoretical and Experimental Advances in High-Pressure Behaviors of Nanoparticles

Pressure-Induced Crystallization and Topochemical Cross-Linking of Polytriacetylene

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