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Zhang Y, Tian J, Liu X, Yang Y, Zhuang Q. Design of new benzoxazines with excellent thermal stability and processability using the “gold panning” method. Eur Polym J 2022. [DOI: 10.1016/j.eurpolymj.2022.111604] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Gomes OP, Rheinheimer JPC, Dias LFG, Batagin-Neto A, Lisboa-Filho PN. Revisiting the hydroxylation phenomenon of SiO 2: a study through "hard-hard" and "soft-soft" interactions. J Mol Model 2022; 28:115. [PMID: 35391628 DOI: 10.1007/s00894-022-05107-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Accepted: 03/31/2022] [Indexed: 11/29/2022]
Abstract
Surface hydroxylation has been extensively studied over the years for a variety of applications, and studies involving hydroxylation of different silica surfaces are still carried out due to the interesting properties obtained from those modified surfaces. Although a number of theoretical studies have been employed to evaluate details on the hydroxylation phenomenon on silica (SiO2) surfaces, most of these studies are based on computationally expensive models commonly based on extended systems. In order to circumvent such an aspect, here we present a low-cost theoretical study on the SiO2 hydroxylation process aiming to evaluate aspects associated with water-SiO2 interaction. Details about local reactivity, chemical softness, and electrostatic potential were evaluated for SiO2 model substrates in the framework of the density functional theory (DFT) using a molecular approach. The obtained results from this new and promising approach were validated and complemented by fully atomistic reactive molecular dynamics (FARMD) simulations. Furthermore, the implemented approach proves to be a powerful tool that is not restricted to the study of hydroxylation, opening a promising route for low computational cost to analyze passivation and anchoring processes on a variety of oxide surfaces.
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Affiliation(s)
- Orisson P Gomes
- School of Sciences, São Paulo State University (UNESP), POSMAT, Bauru, SP, 17033-360, Brazil.
| | - João P C Rheinheimer
- Department of Physics, School of Sciences, São Paulo State University (UNESP), Bauru, SP, 17033-360, Brazil
| | - Leonardo F G Dias
- School of Sciences, São Paulo State University (UNESP), POSMAT, Bauru, SP, 17033-360, Brazil
| | - Augusto Batagin-Neto
- School of Sciences, São Paulo State University (UNESP), POSMAT, Bauru, SP, 17033-360, Brazil.,São Paulo State University (UNESP), Campus of Itapeva, Itapeva, SP, 18409-010, Brazil
| | - Paulo N Lisboa-Filho
- School of Sciences, São Paulo State University (UNESP), POSMAT, Bauru, SP, 17033-360, Brazil.,Department of Physics, School of Sciences, São Paulo State University (UNESP), Bauru, SP, 17033-360, Brazil
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Cachaneski-Lopes JP, Batagin-Neto A. Effects of Mechanical Deformation on the Opto-Electronic Responses, Reactivity, and Performance of Conjugated Polymers: A DFT Study. Polymers (Basel) 2022; 14:polym14071354. [PMID: 35406228 PMCID: PMC9002523 DOI: 10.3390/polym14071354] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2021] [Revised: 03/06/2022] [Accepted: 03/15/2022] [Indexed: 12/04/2022] Open
Abstract
The development of polymers for optoelectronic applications is an important research area; however, a deeper understanding of the effects induced by mechanical deformations on their intrinsic properties is needed to expand their applicability and improve their durability. Despite the number of recent studies on the mechanochemistry of organic materials, the basic knowledge and applicability of such concepts in these materials are far from those for their inorganic counterparts. To bring light to this, here we employ molecular modeling techniques to evaluate the effects of mechanical deformations on the structural, optoelectronic, and reactivity properties of traditional semiconducting polymers, such as polyaniline (PANI), polythiophene (PT), poly (p-phenylene vinylene) (PPV), and polypyrrole (PPy). For this purpose, density functional theory (DFT)-based calculations were conducted for the distinct systems at varied stretching levels in order to identify the influence of structural deformations on the electronic structure of the systems. In general, it is noticed that the elongation process leads to an increase in electronic gaps, hypsochromic effects in the optical absorption spectrum, and small changes in local reactivities. Such changes can influence the performance of polymer-based devices, allowing us to establish significant structure deformation response relationships.
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Affiliation(s)
| | - Augusto Batagin-Neto
- POSMAT, School of Sciences, São Paulo State University (UNESP), Bauru 17033-360, SP, Brazil;
- Institute of Science and Engineering, São Paulo State University (UNESP), Itapeva 18409-010, SP, Brazil
- Correspondence: ; Tel.: +55-(15)-3524-9100 (ext. 9159)
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Coleone AP, Barboza BH, Batagin‐Neto A. Polypyrrole derivatives for detection of toxic gases: A theoretical study. POLYM ADVAN TECHNOL 2021. [DOI: 10.1002/pat.5449] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Alex Pifer Coleone
- School of Sciences, POSMAT São Paulo State University (UNESP) Bauru/SP Brazil
| | - Bruno Hori Barboza
- School of Sciences, POSMAT São Paulo State University (UNESP) Bauru/SP Brazil
| | - Augusto Batagin‐Neto
- School of Sciences, POSMAT São Paulo State University (UNESP) Bauru/SP Brazil
- Campus of Itapeva São Paulo State University (UNESP) Itapeva/SP Brazil
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Doat O, Barboza BH, Batagin‐Neto A, Bégué D, Hiorns RC. Review: materials and modelling for organic photovoltaic devices. POLYM INT 2021. [DOI: 10.1002/pi.6280] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Olivier Doat
- CNRS/Univ Pau & Pays Adour, Institut des Science Analytiques et Physico‐Chimie pour l'Environnement et les Materiaux, UMR5254 Pau France
| | - Bruno H Barboza
- São Paulo State University (UNESP) School of Sciences, POSMAT Bauru Brazil
| | | | - Didier Bégué
- CNRS/Univ Pau & Pays Adour, Institut des Science Analytiques et Physico‐Chimie pour l'Environnement et les Materiaux, UMR5254 Pau France
| | - Roger C Hiorns
- CNRS/Univ Pau & Pays Adour, Institut des Science Analytiques et Physico‐Chimie pour l'Environnement et les Materiaux, UMR5254 Pau France
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Zhang X, Ponce V, Galvez-Aranda DE, Zhou G, Zhou H, Seminario JM. CS 2 Removal from C 5 Distillates by Reactive Molecular Dynamics Simulations. Ind Eng Chem Res 2021. [DOI: 10.1021/acs.iecr.1c00530] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Xiance Zhang
- College of New Energy and Materials, China University of Petroleum-Beijing, Beijing 102249, China
- Department of Chemical Engineering, Texas A&M University, College Station, Texas 77843, United States
| | - Victor Ponce
- Department of Chemical Engineering, Texas A&M University, College Station, Texas 77843, United States
- Department of Materials Science and Engineering, Texas A&M University, College Station, Texas 77843, United States
| | - Diego E. Galvez-Aranda
- Department of Chemical Engineering, Texas A&M University, College Station, Texas 77843, United States
- Department of Electrical and Computer Engineering, Texas A&M University, College Station, Texas 77843, United States
| | - Guanglin Zhou
- College of New Energy and Materials, China University of Petroleum-Beijing, Beijing 102249, China
| | - Hongjun Zhou
- College of New Energy and Materials, China University of Petroleum-Beijing, Beijing 102249, China
| | - Jorge M. Seminario
- Department of Chemical Engineering, Texas A&M University, College Station, Texas 77843, United States
- Department of Electrical and Computer Engineering, Texas A&M University, College Station, Texas 77843, United States
- Department of Materials Science and Engineering, Texas A&M University, College Station, Texas 77843, United States
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Polythiophene derivatives as chemical sensors: a DFT study on the influence of side groups. J Mol Model 2021; 27:17. [PMID: 33409576 DOI: 10.1007/s00894-020-04632-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Accepted: 12/01/2020] [Indexed: 12/14/2022]
Abstract
Conjugated polymers have been considered promising candidates for applications in chemical sensors, mainly due to their high versatility of synthesis, low cost, light weight, and suitable optoelectronic properties. In this context, polythiophene (PT) derivatives have been successfully employed. However, at the same time that the versatility of the synthesis allows the production of varied derivatives, the complexity of interactions with analytes hinders an efficient design of compounds with improved sensing properties. In the present report, electronic structure calculations were employed to identify promising PT derivatives for chemical sensor applications. Structural, optoelectronic, and reactivity properties of a set of branched PT derivatives were evaluated. Adsorption studies considering different gaseous compounds were conducted for selected systems. The results suggest that an appropriate choice of the side groups can lead to derivatives with improved sensorial properties. In particular, PT-CN derivative was identified as the most promising compound for high sensitive chemical sensors towards SO2 and NH3 analytes.
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