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2. Spontaneous Formation of Polymeric Nanoribbons in Water Driven by π–π Interactions.

Author

Berruée, Sébastien, Guigner, Jean‐Michel, Bizien, Thomas, Bouteiller, Laurent, Sosa Vargas, Lydia, and Rieger, Jutta

Subjects
DEGREE of polymerization, NANORIBBONS, PERYLENE, ETHYLENE glycol, IMIDES
Abstract

A simple method was developed to produce polymeric nanoribbons and other nanostructures in water. This approach incorporates a perylene diimide (PDI) functionalized by triethylene glycol (TEG) as a hydrophobic supramolecular structure directing unit (SSDU) into the core of hydrophilic poly(N,N‐dimethylacrylamide) (PDMAc) chains using RAFT polymerization. All PDI‐functional polymers dissolved spontaneously in water, forming different nanostructures depending on the degree of polymerization (DPn): nanoribbons and nanocylinders for DPn=14 and 22, and spheres for DPn>50 as determined by cryo‐TEM and SAXS analyses. UV/Vis absorption spectroscopy was used to monitor the evolution of the PDI absorption signal upon dissolution. In solid form, all polymers show a H‐aggregate absorption signature, but upon dissolution in water, the shortest DPn forming nanoribbons evolved to show HJ‐aggregate absorption signals. Over time, the J‐aggregate band increased in intensity, while cryo‐TEM monitoring evidenced an increase in the nanoribbon's width. Heating the nanoribbons above 60 °C, triggered a morphological transition from nanoribbons to nanocylinders, due to the disappearance of J‐aggregates, while H‐aggregates were maintained. The study shows that the TEG‐PDI is a powerful SSDU to promote 2D or 1D self‐assembly of polymers depending on DPn through simple dissolution in water. [ABSTRACT FROM AUTHOR]

Published
2025
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7. Artificial p–n‐like Junction Based on Pure 2D Organic–Inorganic Halide Perovskite Structure Having Naphthalene Diimide Acceptor Moieties

Author

Feng, Zhao, primary, Liu, Xuelong, additional, Imaoka, Kentaro, additional, Ishii, Tomohiro, additional, Tumen‐Ulzii, Ganbaatar, additional, Tang, Xun, additional, Harrington, George F., additional, Heinrich, Benoît, additional, Ribierre, Jean‐Charles, additional, Chamoreau, Lise‐Marie, additional, Sosa Vargas, Lydia, additional, Kreher, David, additional, Goushi, Kenichi, additional, Matsushima, Toshinori, additional, Zhou, Guijiang, additional, Mathevet, Fabrice, additional, and Adachi, Chihaya, additional

Published
2023
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10. Reconsidering terms for mechanisms of polymer growth: the “step-growth” and “chain-growth” dilemma

Author

Chan, Chin Han, Chen, Jiun-Tai, Farrell, Wesley S., Fellows, Christopher M., Keddie, Daniel J., Luscombe, Christine K., Matson, John B., Merna, Jan, Moad, Graeme, Russell, Gregory T., Théato, Patrick, Topham, Paul D., Sosa Vargas, Lydia, Chan, Chin Han, Chen, Jiun-Tai, Farrell, Wesley S., Fellows, Christopher M., Keddie, Daniel J., Luscombe, Christine K., Matson, John B., Merna, Jan, Moad, Graeme, Russell, Gregory T., Théato, Patrick, Topham, Paul D., and Sosa Vargas, Lydia

Abstract

The terms “step-growth polymerization” and “chain-growth polymerization” are used widely in both written and oral communications to describe the two main mechanisms of polymer growth. As members of the Subcommittee on Polymer Terminology (SPT) in the Polymer Division of the International Union of Pure and Applied Chemistry (IUPAC), we are concerned that these terms are confusing because they do not describe the fundamental differences in the growth of polymers by these methods. For example, both polymerization methods are comprised of a series of steps, and both produce polymer chains. In an effort to recommend comprehensive terms, a 1994 IUPAC Recommendation from the then version of SPT suggested polycondensation and polyaddition as terms for the two variants of “step-growth polymerization”, and similarly chain polymerization and condensative chain polymerization for the two variants of “chain-growth polymerization”. However, these terms also have shortcomings. Adding to the confusion, we have identified a wide variety of other terms that are used in textbooks for describing these basic methods of synthesizing polymers from monomers. Beyond these issues with “step-growth” and “chain-growth”, synthesis of polymers one monomer unit at a time presents a related dilemma in that this synthetic strategy is wholly encompassed by neither of the traditional growth mechanisms. One component of the mission of IUPAC is to develop tools for the clear communication of chemical knowledge around the world, of which recommending definitions for terms is an important element. Here we do not endorse specific terms or recommend new ones; instead, we aim to convey our concerns with the basic terms typically used for classifying methods of polymer synthesis, and in this context we welcome dialogue from the broader polymer community in a bid to resolve these issues.

Published
2022

12. Reconsidering terms for mechanisms of polymer growth: the “step-growth” and “chain-growth” dilemma

Author

Chan, Chin Han, primary, Chen, Jiun-Tai, additional, Farrell, Wesley S., additional, Fellows, Christopher M., additional, Keddie, Daniel J., additional, Luscombe, Christine K., additional, Matson, John B., additional, Merna, Jan, additional, Moad, Graeme, additional, Russell, Gregory T., additional, Théato, Patrick, additional, Topham, Paul D., additional, and Sosa Vargas, Lydia, additional

Published
2022
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13. Enhanced Light–Matter Interaction and Polariton Relaxation by the Control of Molecular Orientation

Author

Ishii, Tomohiro, primary, Bencheikh, Fatima, additional, Forget, Sébastien, additional, Chénais, Sébastien, additional, Heinrich, Benoît, additional, Kreher, David, additional, Sosa Vargas, Lydia, additional, Miyata, Kiyoshi, additional, Onda, Ken, additional, Fujihara, Takashi, additional, Kéna‐Cohen, Stéphane, additional, Mathevet, Fabrice, additional, and Adachi, Chihaya, additional

Published
2021
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14. Le grain de sel du RJ-SCF- Les filles et les femmes en science

Author

Sosa-Vargas, Lydia, SOSA VARGAS, Lydia, Institut Parisien de Chimie Moléculaire (IPCM), Chimie Moléculaire de Paris Centre (FR 2769), Institut de Chimie du CNRS (INC)-École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Ecole Nationale Supérieure de Chimie de Paris - Chimie ParisTech-PSL (ENSCP), Université Paris sciences et lettres (PSL)-Ecole Superieure de Physique et de Chimie Industrielles de la Ville de Paris (ESPCI Paris), Université Paris sciences et lettres (PSL)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut de Chimie du CNRS (INC)-École normale supérieure - Paris (ENS Paris), and Université Paris sciences et lettres (PSL)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[CHIM.OTHE] Chemical Sciences/Other, [CHIM.OTHE]Chemical Sciences/Other, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2020

15. Photoactive Organic/Inorganic Hybrid Materials with Nanosegregated Donor-Acceptor Arrays

Author

Izzet, Guillaume, Zhu, Xiaolei, Hessin, Cheriehan, Salamé, Aude, Sosa-Vargas, Lydia, Kreher, David, Adachi, Chihaya, Proust, Anna, Mialane, Pierre, Marrot, Jérome, Bouchet, Aude, Sliwa, Michel, Méry, Stéphane, Heinrich, Benoît, Mathevet, Fabrice, Proust, F, Mathevet, G, Adachi, Pr, Mialane, Pr, Institut Parisien de Chimie Moléculaire (IPCM), Chimie Moléculaire de Paris Centre (FR 2769), Institut de Chimie du CNRS (INC)-École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Ecole Nationale Supérieure de Chimie de Paris - Chimie ParisTech-PSL (ENSCP), Université Paris sciences et lettres (PSL)-Ecole Superieure de Physique et de Chimie Industrielles de la Ville de Paris (ESPCI Paris), Université Paris sciences et lettres (PSL)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut de Chimie du CNRS (INC)-École normale supérieure - Paris (ENS Paris), and Université Paris sciences et lettres (PSL)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Photoluminescence, Materials science, 010405 organic chemistry, Mesogen, General Chemistry, 010402 general chemistry, Photochemistry, 01 natural sciences, Catalysis, 0104 chemical sciences, chemistry.chemical_compound, chemistry, Intramolecular force, Polyoxometalate, Thiophene, [CHIM]Chemical Sciences, Lamellar structure, sense organs, Self-assembly, Hybrid material, ComputingMilieux_MISCELLANEOUS
Abstract

The synthesis of the first mesogenic donor-acceptor polyoxometalate (POM)-based hybrid is herein described. The structural and electronic properties of the hybrid compound were evaluated through combination of small- and wide-angle X-ray scattering, optical microscopy, electrochemistry and photoluminescence. In the solid state, the compound behaves as a birefringent solid, displaying a lamellar organization in which double-layers of POMs and bis(thiophene)thienothiophene organic donors alternate regularly. Noticeably, the sub-unit organizations in the composite are similar to that observed for the individual POM and organic donor precursors. Photophysical studies show that in the hybrid, the fluorescence of the organic donor unit is considerably quenched both in solution and in the solid state, which is attributed to occurrence of intramolecular charge-separated state.

Published
2021
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16. Photoactive Organic/Inorganic Hybrid Materials with Nanosegregated Donor–Acceptor Arrays

Author

Zhu, Xiaolei, primary, Hessin, Cheriehan, additional, Salamé, Aude, additional, Sosa‐Vargas, Lydia, additional, Kreher, David, additional, Adachi, Chihaya, additional, Proust, Anna, additional, Mialane, Pierre, additional, Marrot, Jérome, additional, Bouchet, Aude, additional, Sliwa, Michel, additional, Méry, Stéphane, additional, Heinrich, Benoît, additional, Mathevet, Fabrice, additional, and Izzet, Guillaume, additional

Published
2021
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19. Beyond 'decorative' 2D supramolecular self-assembly: strategies towards functional surfaces for nanotechnology

Author

Brisse, Romain, Arfaoui, Imad, Petit, Christophe, Kreher, David, Mathevet, Fabrice, Sosa-Vargas, Lydia, Kim, Eunkyoung, Le Liepvre, S., Debuisschert, Céline, Charra, Fabrice, Attias, André-Jean, De la Molécule aux Nanos-objets : Réactivité, Interactions et Spectroscopies (MONARIS), Institut de Chimie du CNRS (INC)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Institut Parisien de Chimie Moléculaire (IPCM), Chimie Moléculaire de Paris Centre (FR 2769), École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Ecole Nationale Supérieure de Chimie de Paris - Chimie ParisTech-PSL (ENSCP), Université Paris sciences et lettres (PSL)-Ecole Superieure de Physique et de Chimie Industrielles de la Ville de Paris (ESPCI Paris), Université Paris sciences et lettres (PSL)-Institut de Chimie du CNRS (INC)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Institut de Chimie du CNRS (INC)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS), CEA- Saclay (CEA), Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Building Blocks for Future Electronics Laboratory (2B-FUEL), and Yonsei University-Institut de Chimie du CNRS (INC)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[CHIM]Chemical Sciences
Published
2018

20. Nano-engineering of Fluorescent Monolayers on Graphene

Author

Sosa Vargas, Lydia, primary, Fernez, Quentin, additional, Kreher, David, additional, Mathevet, Fabrice, additional, Arfaoui, Imad, additional, Vassant, Simon, additional, Fiorini-Debuisschert, Celine, additional, and Charra, Fabrice, additional

Published
2019
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21. Probing the in-air growth of large area of 3D functional structures into a 2D supramolecular nanoporous network

Author

Brisse, Romain, primary, Guianvarc'h, Dominique, additional, Mansuy, Christelle, additional, Sagan, Sandrine, additional, Kreher, David, additional, Sosa-Vargas, Lydia, additional, Hamitouche, Lydia, additional, Humblot, Vincent, additional, Arfaoui, Imad, additional, Labet, Vanessa, additional, Paris, Céline, additional, Petit, Christophe, additional, and Attias, André-Jean, additional

Published
2018
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33. Synthesis, Characterization, MCD Spectroscopy, and TD-DFT Calculations of Copper-Metalated Nonperipherally Substituted Octaoctyl Derivatives of Tetrabenzotriazaporphyrin, cis- and trans-Tetrabenzodiazaporphyrin, Tetrabenzomonoazaporphyrin, and Tetrabenzoporphyrin

Author

Mack, John, primary, Sosa-Vargas, Lydia, additional, Coles, Simon J., additional, Tizzard, Graham J., additional, Chambrier, Isabelle, additional, Cammidge, Andrew N., additional, Cook, Michael J., additional, and Kobayashi, Nagao, additional

Published
2012
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36. Discotic Liquid Crystal-Functionalized Gold Nanorods: 2- and 3D Self-Assembly and Macroscopic Alignment as well as Increased Charge Carrier Mobility in Hexagonal Columnar Liquid Crystal Hosts Affected by Molecular Packing and π-π Interactions

Author

Feng, Xiang, Sosa‐Vargas, Lydia, Umadevi, S., Mori, Taizo, Shimizu, Yo, and Hegmann, Torsten

Subjects
*DISCOTIC liquid crystals, *NANORODS, *GOLD, *TRANSMISSION electron microscopy, *ORGANIC solvents
Abstract

Gold nanorods functionalized with triphenylene-based discotic liquid crystal (LC) motifs show striking self-assembly behavior both on transmission electron microscopy (TEM) grids as well as in the bulk enforced by the π-π-stacking of triphenylene groups of adjacent nanorods. TEM images confirm that these discotic LC nanorods form ribbons of parallel-stacked nanorods several hundred nanometer long. The pursued silane conjugation approach to decorate the nanorods allows for the preparation of dispersions of the nanorods in the hexagonal columnar phases of parent discotic LCs, where the nanorods can be macroscopically aligned with almost 80% efficiency by a simple shearing protocol. Doping the parent host materials with about 1% by weight of the discotic LC-capped nanorods also reduces the lattice parameter and the intracolumnar packing, which gives rise to enhanced charge carrier mobility in these hosts as determined by time-of-flight measurements. [ABSTRACT FROM AUTHOR]

Published
2015
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37. Octahexyltetrabenzotriazaporphyrin: A Discotic Liquid Crystalline Donor for High-performance Small-molecule Solar Cells.

Author

Quang-Duy Dao, Koichi Watanabe, Hiromichi Itani, Sosa-Vargas, Lydia, Akihiko Fujii, Yo Shimizu, and Masanori Ozaki

Abstract

Phase-transition, optical, and photoconductive properties of a discotic liquid crystalline donor, nonperipherally substituted octahexyltetrabenzotriazaporphyrin (C6TBTAPH2), was characterized for high-performance solution-processed bulk heterojunction (BHJ) organic solar cells (OSCs). C6TBTAPH2 exhibited high hole and electron mobilities at room temperature, exceeding 0.18 cm² V-1 s-1, and strong absorption at both B-band and Q-band. A high power conversion efficiency of 4.9% under AM 1.5G irradiation (100 mW cm-2) was achieved for BHJ OSCs utilizing phase-separated nanomaterials comprising C6TBTAPH2 and 1-(3-methoxycarbonyl)propyl-1-phenyl-(6,6)C71. [ABSTRACT FROM AUTHOR]

Published
2014
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38. From Young Attendees to Young Actors: The "Young Chemists Symposium" at IUPAC2019.

Author

Carenco, Sophie, Contributors include from the Société Chimique de France (SCF):, Oger, Camille, Mougel, Victor, Halbert, Stéphanie, Sosa-Vargas, Lydia, and Poggi, Benjamin

Subjects
CHEMISTS, INDUSTRIALIZATION, CONFERENCES & conventions, WORKS councils, MANAGEMENT committees
Abstract

For 100 years, IUPAC has supported chemists worldwide in all facets of their craft: industrial development, academic research, teaching, and many more. Mindful of nurturing its future leaders, since 2020 the Union ensured the attendance of the younger generation of chemists at the General Assembly and Congress in part through their "Young Observers" program [1]. It provides an opportunity for scientists below 40 to acquaint themselves with the work of the Divisions and Committees. The IUPAC Congress, which attracts several thousand attendees every two years, was not finely tuned to the expectations and contributions of the rising generation of chemists. However, the paradigm has begun to change. For the 47th Congress organized in Paris, France, 5-12 July 2019, the scientific executive committee, chaired by Clément Sanchez, enthusiastically received the proposal from a team of young chemists to build a "Young Chemists Symposium", organized by younger chemists for the benefit of all the attendees. [ABSTRACT FROM AUTHOR]

Published
2020
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39. Phthalocyanine analogues: unexpectedly facile access to non-peripherally substituted octaalkyl tetrabenzotriazaporphyrins, tetrabenzodiazaporphyrins, tetrabenzomonoazaporphyrins and tetrabenzoporphyrins.

Author

Cammidge AN, Chambrier I, Cook MJ, Hughes DL, Rahman M, and Sosa-Vargas L

Abstract

Controlled syntheses of phthalocyanine/benzoporphyrin hybrid structures have been achieved. We report a simple means for obtaining non-peripherally octaalkyl-substituted derivatives of tetrabenzotriazaporphyrin (TBTAP), tetrabenzodiazaporphyrin (TBDAP), tetrabenzomonoazaporphyrin (TBMAP) and tetrabenzoporphyrin (TBP) macrocycles by treating 3,6-dialkyl phthalonitriles with differing amounts of the Grignard reagent MeMgBr. This range of macrocyclic products is not obtained from corresponding reactions of a Grignard reagent with 4-substituted phthalonitriles, reported previously, or reaction of MeMgBr with a 4,5-dialkyl phthalonitrile. Attempts to form a meso-substituted TBTAP from 3,6-dialkyl phthalonitriles by reaction with benzyl and long-chain alkyl Grignard reagents unexpectedly gave only the parent macrocycle unsubstituted at the meso position. The synthetic protocols are by far the most straightforward and convenient means to access these interesting, but scarcely studied, classes of material. The new series of substituted macrocyclic compounds, obtained as the metal-free and magnesium- and copper(II)-metallated derivatives, show trends in the UV/Vis spectra consistent with those predicted elsewhere by Kobayashi. Characterisation of the new families allows further trends to be identified as meso-nitrogen atoms are sequentially replaced by methine bridges, for example, the compounds provide novel examples of macrocyclic structures that show columnar mesophase behaviour. Single-crystal X-ray structure determinations have been obtained for three magnesium-metallated derivatives bearing eight hexyl substituents and constitute the first set of structural data obtained for such a series., (Copyright © 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.)

Published
2011
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