Poly(dimethyltin glutarate) as a Prospective Material for High Dielectric Applications

Baldwin, Aaron; Ma, Rui; Mannodi-Kanakkithodi, Arun; Huan, Tran Doan; Wang, Chenchen; Tefferi, Mattewos; Marszalek, Jolanta E.; Çakmak, Mükerrem; Cao, Yang; Ramprasad, Rampi; Sotzing, Gregory A.

doi:10.1002/adma.201404162

Cited by 65 publications

(74 citation statements)

References 47 publications

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“…We recently studied the structure-dielectric property relationship of aliphatic poly(dimethyltin esters) where dimethyltin dicarboxylate groups were joined together with methylene groups of varying length. [ 14,15 ] These polymers exhibited dielectric constants ≥5.3, dielectric loss for the majority of the systems on the order of 10 −2 and band gaps ≥4.6 eV. Based on these results, the critical amount of tin within a polymer, dependent upon the requirements of the application, can be identifi ed.…”

Section: Introductionmentioning

confidence: 96%

Effect of Incorporating Aromatic and Chiral Groups on the Dielectric Properties of Poly(dimethyltin esters)

Baldwin

Huan

Cao

et al. 2014

Macromol. Rapid Commun.

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High-dielectric constant materials are critical for numerous applications such as photovoltaics, photonics, transistors, and capacitors. There are numerous polymers used as dielectric layers in these applications but can suffer from having a low dielectric constant, small band gap, or ferroelectricity. Here, the structure-property relationship of various poly(dimethyltin esters) is described that look to enhance the dipolar and atomic polarization component of the dielectric constant. These polymers are also modeled using first principles calculations based on density functional theory (DFT) to predict such values as the total, electronic, and ionic dielectric constant as well as structure. A strong correlation is achieved between the theoretical and experimental values with the polymers exhibiting dielectric constants >4.5 with dissipation on the order of 10(-3) -10(-2) .

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Section: Introductionmentioning

confidence: 96%

Effect of Incorporating Aromatic and Chiral Groups on the Dielectric Properties of Poly(dimethyltin esters)

Baldwin

Huan

Cao

et al. 2014

Macromol. Rapid Commun.

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“…However, the dielectric permittivities of polymer dielectrics are usually very low (below 10 @1 kHz), which greatly hindered their wide applications. Toward this end, two strategies have been developed to improve the dielectric constants of polymer composites: (1) ceramic-polymer composites composed of high-k ceramic fillers (e.g., BaTiO 3 [23][24][25][26][27], TiO 2 [28,29], SrTiO 3 [30]) dispersed in polymer matrix and (2) conductor-polymer composites consisting of conductors (e.g., metals, [31,32], graphite [33,34], carbon nanotube [35][36][37], graphene [38,39], carbon black [40], and conductive polymer [41,42]) dispersed in polymer matrix. For ceramic-polymer composites, the enhancement of permittivity is limited (below 50 @10 kHz) even when the ceramic loading excesses 50 vol%, leading to deteriorated mechanical properties, high loss, and low breakdown strength [43].…”

Section: Introductionmentioning

confidence: 99%

Improved dielectric permittivity and retained low loss in layer-structured films via controlling interfaces

Mao

Shi

Wang

et al. 2018

Adv Compos Hybrid Mater

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The search for high-performance dielectric materials has long been driven by the urgent needs for various modern electronics. However, enhanced permittivity is always accompanied by elevated loss, which seriously hinders the development and applications of dielectric materials. Herein, negative-k layers were introduced into layer-structured films, forming a new class of multilayer composites consisting of alternately stacked positive-k and negative-k layers. Compared with traditional multilayer composites without negative-k layers, the layered composites containing extra positive-k/negative-k interfaces exhibit superior ability in balancing the contradict parameters: permittivity and loss, yielding substantially enhanced permittivity without sacrificing the low loss. It is indicated that the permittivity was enhanced by the charge accumulations and reinforced polarizations on the interfaces between positive-k and negative-k layers. Meanwhile, the loss induced by the leakage current was suppressed by the blocked transport of carriers between adjacent layers. The trilayered 60-3.5-60 composite exhibits an enhanced dielectric constant (ε′ ≈ 33 @10 kHz) and retained low loss (tanδ ≈ 0.12 @10 kHz) compared with the single-layer BT/PVA composite containing 60 wt% BT fillers (ε′ ≈ 9.5 @10 kHz, tanδ ≈ 0.075 @10 kHz). This research offers an effective way to design and fabricate novel high-performance dielectric materials.

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“…21,22 PVDF and their copolymers have been a focus for recent research, [23][24][25] however the coercivity inherent to ferroelectrics results in high loss. 32 These processes of design and selection are dominated by trial and error strategies guided by intuition, which could be signicantly more efficient by using the tools of advanced computational screening. Our team explored chemical space to incorporate tin covalently into polymer chain and achieved increased dielectric constant and band gap.…”

Section: Introductionmentioning

confidence: 99%

Rational design and synthesis of polythioureas as capacitor dielectrics

et al. 2015

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Rational strategies combining computational and experimental procedures accelerate the process of designing and predicting properties of new materials for a specific application. Here, a systematic study is presented on polythioureas for high energy density capacitor applications combining a newly developed modelling strategy with synthesis and processing. Synthesis was guided by implementation of a high throughput hierarchical modelling with combinatorial exploration and successive screening, followed by an evolutionary structure search based on density functional theory (DFT). Crystalline structures of polymer films were found to be in agreement with DFT predicted results. Dielectric constants of $4.5 and energy densities of $10 J cm À3 were achieved in accordance with Weibull characteristic breakdown fields of $700 MV m À1 . The variation of polymer backbone using aromatic, aliphatic and oligoether segments allowed for tuning dielectric properties through introduction of additional permanent dipoles, conjugation, and better control of morphology.

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Poly(dimethyltin glutarate) as a Prospective Material for High Dielectric Applications

Cited by 65 publications

References 47 publications

Effect of Incorporating Aromatic and Chiral Groups on the Dielectric Properties of Poly(dimethyltin esters)

Effect of Incorporating Aromatic and Chiral Groups on the Dielectric Properties of Poly(dimethyltin esters)

Improved dielectric permittivity and retained low loss in layer-structured films via controlling interfaces

Rational design and synthesis of polythioureas as capacitor dielectrics

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