scholarly journals Defect Removal by Solvent Vapor Annealing in Thin Films of Lamellar Diblock Copolymers

2019 ◽  
Vol 52 (23) ◽  
pp. 9321-9333 ◽  
Author(s):  
Xinpeng Xu ◽  
Xingkun Man ◽  
Masao Doi ◽  
Zhong-can Ou-Yang ◽  
David Andelman
Keyword(s):  
Thin Films ◽  
Diblock Copolymers ◽  
Solvent Vapor ◽  
Vapor Annealing ◽  
Solvent Vapor Annealing

scholarly journals Segregation of Maghemite Nanoparticles within Symmetric Diblock Copolymer and Triblock Terpolymer Patterns under Solvent Vapor Annealing

Materials ◽  
2020 ◽  
Vol 13 (6) ◽  
pp. 1286
Author(s):  
George Zapsas ◽  
Dimitrios Moschovas ◽  
Konstantinos Ntetsikas ◽  
Andreas Karydis-Messinis ◽  
Nikolaos Chalmpes ◽  
...  
Keyword(s):  
Thin Films ◽  
Diblock Copolymer ◽  
Self Assembly ◽  
Diblock Copolymers ◽  
Maghemite Nanoparticles ◽  
Solvent Vapor ◽  
Vapor Annealing ◽  
The Matrix ◽  
Solvent Vapor Annealing ◽  
Selective Placement

Block copolymers (BCPs), through their self-assembly, provide an excellent guiding platform for precise controlled localization of maghemite nanoparticles (MNPs). Diblock copolymers (di/BCP) represent the most applied matrix to host filler components due to their morphological simplicity. A series of nanocomposites based on diblock copolymer or triblock terpolymer matrices and magnetic nanoparticles were prepared to study and compare the influence of an additional block into the BCP matrix. MNPs were grafted with low molecular weight polystyrene (PS) chains in order to be segregated in a specific phase of the matrix to induce selective localization. After the mixing of the BCPs with 10% w/v PS-g-MNPs, nanocomposite thin films were formed by spin coating. Solvent vapor annealing (SVA) enabled the PS-g-MNPs selective placement within the PS domains of the BCPs, as revealed by atomic force microscopy (AFM). The recorded images have proven that high amounts of functionalized MNPs can be controllably localized within the same block (PS), despite the architecture of the BCPs (AB vs. ABC). The adopted lamellar structure of the “neat” BCP thin films was maintained for MNPs loading approximately up to 10% w/v, while, for higher content, the BCP adopted lamellar morphology is partially disrupted, or even disappears for both AB and ABC architectures.

Feasible tuning of barrier energy in PEDOT:PSS/Bi2Te3 nanowires-based thermoelectric nanocomposite thin films through polar solvent vapor annealing

Nano Energy ◽  
2020 ◽  
Vol 67 ◽  
pp. 104207 ◽  
Author(s):  
Wan Sik Kim ◽  
Gopinathan Anoop ◽  
Il-Seok Jeong ◽  
Hye Jeong Lee ◽  
Hyun Bin Kim ◽  
...  
Keyword(s):  
Thin Films ◽  
Polar Solvent ◽  
Solvent Vapor ◽  
Barrier Energy ◽  
Nanocomposite Thin Films ◽  
Vapor Annealing ◽  
Solvent Vapor Annealing

scholarly journals Widely Tunable Morphologies in Block Copolymer Thin Films Through Solvent Vapor Annealing Using Mixtures of Selective Solvents

2015 ◽  
Vol 25 (20) ◽  
pp. 3057-3065 ◽  
Author(s):  
Michelle A. Chavis ◽  
Detlef-M. Smilgies ◽  
Ulrich B. Wiesner ◽  
Christopher K. Ober
Keyword(s):  
Thin Films ◽  
Block Copolymer ◽  
Solvent Vapor ◽  
Selective Solvents ◽  
Vapor Annealing ◽  
Solvent Vapor Annealing

scholarly journals Effects of Solvent Vapor Annealing on Morphology and Charge Transport of Poly(3-hexylthiophene) (P3HT) Films Incorporated with Preformed P3HT Nanowires

Polymers ◽  
2020 ◽  
Vol 12 (5) ◽  
pp. 1188
Author(s):  
Mingu Jang ◽  
Yang-Il Huh ◽  
Mincheol Chang
Keyword(s):  
Thin Films ◽  
Charge Transport ◽  
Carrier Mobility ◽  
Morphological Changes ◽  
Charge Carrier Mobility ◽  
Solvent Vapor ◽  
Molecular Ordering ◽  
Vapor Annealing ◽  
Solvent Vapor Annealing ◽  
Influence Of Solvent

We systematically studied the influence of solvent vapor annealing on the molecular ordering, morphologies, and charge transport properties of poly(3-hexylthiophene) (P3HT) thin films embedded with preformed crystalline P3HT nanowires (NWs). Solvent vapor annealing (SVA) with chloroform (CF) was found to profoundly impact on the structural and morphological changes, and thus on the charge transport characteristics, of the P3HT-NW-embedded P3HT films. With increased annealing time, the density of crystalline P3HT NWs was increased within the resultant films, and also intra- and intermolecular interactions of the corresponding films were significantly improved. As a result, the P3HT-NW-embedded P3HT films annealed with CF vapor for 20 min resulted in a maximized charge carrier mobility of ~0.102 cm2 V−1 s−1, which is higher than that of pristine P3HT films by 4.4-fold (μ = ~0.023 cm2 V−1 s−1).

scholarly journals Temperature-Controlled Solvent Vapor Annealing of Thin Block Copolymer Films

Polymers ◽  
2019 ◽  
Vol 11 (8) ◽  
pp. 1312 ◽  
Author(s):  
Xiao Cheng ◽  
Alexander Böker ◽  
Larisa Tsarkova
Keyword(s):  
Thin Films ◽  
Block Copolymer ◽  
Thermal Annealing ◽  
Saturated Vapor ◽  
Polymer Chains ◽  
Special Focus ◽  
Solvent Vapor ◽  
Copolymer Films ◽  
Vapor Annealing ◽  
Solvent Vapor Annealing

Solvent vapor annealing is as an effective and versatile alternative to thermal annealing to equilibrate and control the assembly of polymer chains in thin films. Here, we present scientific and practical aspects of the solvent vapor annealing method, including the discussion of such factors as non-equilibrium conformational states and chain dynamics in thin films in the presence of solvent. Homopolymer and block copolymer films have been used in model studies to evaluate the robustness and the reproducibility of the solvent vapor processing, as well as to assess polymer-solvent interactions under confinement. Advantages of utilizing a well-controlled solvent vapor environment, including practically interesting regimes of weakly saturated vapor leading to poorly swollen states, are discussed. Special focus is given to dual temperature control over the set-up instrumentation and to the potential of solvo-thermal annealing. The evaluated insights into annealing dynamics derived from the studies on block copolymer films can be applied to improve the processing of thin films of crystalline and conjugated polymers as well as polymer composite in confined geometries.

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