Article
Chemistry, Multidisciplinary
Jayeeta Bhattacharjee, Alok Sarkar, Tarun K. Panda
Summary: Biodegradable polyesters, such as PCL and PLA, are considered for various applications due to their bio-renewability, biodegradability, and biocompatibility. Ring-opening polymerization is an efficient method for preparing polyesters, and polymerization of racemic lactide can achieve excellent stereoregularity without the need for costly chiral auxiliaries. Various methods have been reviewed for the synthesis of biodegradable polyesters using alkali and alkaline earth metal complexes as catalysts.
Article
Chemistry, Applied
Cristina Maquilon, Francesco Della Monica, Bart Limburg, Arjan W. Kleij
Summary: An operationally mild, ruthenium-based photocatalytic protocol has been developed for the conversion of gamma-mono- and gamma,gamma-disubstituted allyl carbonates to substituted six-membered cyclic carbonates. The variation and diversification of carbonate ring substitution provides access to new monomers useful in ring-opening polymerization, leading to polycarbonates with potentially tailored properties.
ADVANCED SYNTHESIS & CATALYSIS
(2021)
Article
Polymer Science
Narumi Miyasako, Shin-ichi Matsuoka, Masato Suzuki
Summary: New ester-functionalized bicyclic aliphatic polymers were successfully synthesized through ring-opening metathesis polymerization (ROMP) of various norbornene lactones and their analogues, followed by hydrogenation. The comparison and discussion of polymerizability and thermal properties between different monomers before and after hydrogenation were conducted. The obtained polymers showed excellent thermal stability and processing deformation suitable for transparent resin materials.
MACROMOLECULAR RAPID COMMUNICATIONS
(2021)
Review
Polymer Science
Jiaxi Xu, Xin Wang, Jingjing Liu, Xiaoshuang Feng, Yves Gnanou, Nikos Hadjichristidis
Summary: Ring-opening polymerization (ROP) is a prevalent and convenient method for synthesizing well-defined polymers with initiators/catalysts. One of the challenges faced by ROP catalysts is the selective activation of functional groups or linkages of the monomer without those carried out in the polymer chains, especially at high conversion. H-bonding organocatalysts can offer precise selectivity for ROP in a wide range of monomers.
PROGRESS IN POLYMER SCIENCE
(2022)
Article
Polymer Science
Chun-Juei Chang, Wei Lee, Yu-Chi Liou, Yu-Lun Chang, Yi-Chun Lai, Shangwu Ding, Hsuan-Ying Chen, Hsing-Yin Chen, Yung-Chi Chang
Summary: The study demonstrated that dinuclear aluminum complexes exhibited higher catalytic activity than mononuclear aluminum complexes, particularly those with 1,3-substituted phenyl ligands. One Al atom in the dinuclear Al system acted as an electron-withdrawing group, influencing the other Al atom through associated aromatic ligands, thereby enhancing catalytic activity for the ROP of CL.
EUROPEAN POLYMER JOURNAL
(2022)
Article
Polymer Science
Yi Wan, Yun Bai, Hai Xu, Jianghua He, Yuetao Zhang
Summary: The study successfully synthesized five chiral binuclear aluminum methyl complexes, which catalyze the ring-opening polymerization of rac-lactide in a controlled manner and produce polymers with high isoselectivity. The kinetic studies show a first-order dependence on monomer concentration, supporting an enantiomorphic site control mechanism for the catalysts. This strategy can also be applied to other lactones for ring-opening polymerization.
MACROMOLECULAR RAPID COMMUNICATIONS
(2021)
Article
Chemistry, Physical
Michael Lalanne-Tisne, Audrey Favrelle-Huret, Wim Thielemans, Joao P. Prates Ramalho, Philippe Zinck
Summary: Organocatalysts are important in polymerization reactions. This study used Density Functional Theory to investigate the ring-opening polymerization of trimethylene carbonate, revealing a dual mechanism and confirming TBD as a more efficient catalyst.
Article
Multidisciplinary Sciences
Francesca Fiorentini, Wilfred T. T. Diment, Arron C. C. Deacy, Ryan W. F. Kerr, Stephen Faulkner, Charlotte K. K. Williams
Summary: In this study, a series of heterodinuclear catalysts based on Co(III) combined with alkali and alkaline earth metals were evaluated for three different polymerization reactions. The results show that catalysts with lower Lewis acidity exhibit higher reaction rates and selectivity. These structure-performance correlations apply across different polymerization reactions and provide valuable insights for the future development of catalytic synergy.
NATURE COMMUNICATIONS
(2023)
Review
Chemistry, Applied
Farah Naz, Rahaman M. Abdur, Fatima Mumtaz, Mirella Elkadi, Francis Verpoort
Summary: This study reviews the application of heterogeneous catalysts in the ring-opening polymerization of cyclic esters, with a focus on metal-organic frameworks (MOFs) and supported catalysts. The importance of precise design and catalyst stability is emphasized in controlling polymerizations.
APPLIED ORGANOMETALLIC CHEMISTRY
(2023)
Article
Chemistry, Inorganic & Nuclear
Hyuk-Joon Jung, Kudzanai Nyamayaro, Hassan A. Baalbaki, Chatura Goonesinghe, Parisa Mehrkhodavandi
Summary: Dinuclear indium complexes have been synthesized and characterized. The neutral indium chloride complex [(ONapNiN)InCl2]2 (4) showed high conversion and selectivity for the alternating copolymerization of cyclohexene oxide and CO2. The reactivity of the dinuclear indium chloride complex 4 differs significantly from that of the mononuclear indium chloride complex 5, suggesting a cooperative initiation mechanism involving the two indium centers in 4.
INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Hui Li, Jerome Ollivier, Sophie M. Guillaume, Jean-Francois Carpentier
Summary: This study reports the first chemical synthesis of poly(3-thiobutyrolactone) (P3TB) through ring-opening polymerization. The reactions proceed rapidly in the presence of various metal-based catalysts, and high selectivity can be achieved by manipulating reaction conditions and catalyst systems. The topology and stereochemistry of the resulting polymer have been characterized.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Polymer Science
Natalie E. Goeppert, Michael Dirauf, Phil Liebing, Christine Weber, Ulrich S. Schubert
Summary: A monomer of 3-benzylmorpholine-2,5-dione is synthesized from l-phenylalanine and characterized by various techniques. A well-defined poly(ester amide) homopolymer is then synthesized using a binary catalyst system, showing high controllability of dispersities and molar masses. The resulting polyesteramides have potential as drug delivery vehicles, especially for hydrophobic drugs.
MACROMOLECULAR RAPID COMMUNICATIONS
(2023)
Article
Polymer Science
Wei-Han Rao, Lin Yu, Jian-Dong Ding
Summary: Coordination-insertion ring-opening polymerization is an important method for synthesizing polyesters, which have wide applications in biomedical and environment-benign fields. In this study, we proposed a new reaction pathway based on the insight that even a partial double bond is rotatable at the catalysis temperature. By carrying out kinetic experiments and using density functional theory, we validated the quasi-ergodic search of reaction pathways and the scaling predicted by transition state theory.
CHINESE JOURNAL OF POLYMER SCIENCE
(2023)
Review
Polymer Science
Yiyi Deng, Fabian Mehner, Jens Gaitzsch
Summary: Radical Ring-opening polymerization (RROP) of cyclic ketene acetals (CKAs) is a valuable polymerization technique. This review discusses the progress made in the field, including the synthesis of available CKAs and the understanding of the polymerization mechanism. The potential of producing fully biodegradable polymers through CKAs without vinylenes is highlighted. The control of side reactions, the impact on polymer properties, and the expanded application range of materials from RROP are also explored.
MACROMOLECULAR RAPID COMMUNICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Phong K. Quach, Jesse H. Hsu, Ivan Keresztes, Brett P. Fors, Tristan H. Lambert
Summary: The ring-opening metathesis polymerization of cyclopropenes using hydrazonium initiators was investigated. The initiators, formed by condensing 2,3-diazabicyclo[2.2.2]octane and an aldehyde, polymerize cyclopropene monomers through a sequence of [3+2] cycloaddition and cycloreversion reactions. The study showed that the monomer to initiator ratio had a positive correlation with the degree of polymerization.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Inorganic & Nuclear
Masoume Malmir, Majid M. Heravi, Zahra Yekke-Ghasemi, Masoud Mirzaei
Summary: In this study, a tri-component composite consisting of Fe3O4 nanoparticles, Keggin-type polyoxometalate, and graphene oxide was prepared and investigated as a catalyst for the oxidation of sulfides to sulfoxides. The catalyst showed excellent stability, high yields, and recyclability, making it a promising choice for organic-inorganic hybrid catalytic reactions conducted under mild conditions.
Article
Chemistry, Inorganic & Nuclear
Samuel D. Juarez-Escamilla, Sriloy Dey, Bruno Donnadieu, T. Keith Hollis
Summary: In this study, a bidentate Mo complex was synthesized using metalation and transmetalation methodology. The synthesis was optimized to achieve a high yield. The crystal structure of the bidentate complex was determined. Additionally, alternative forms of ligands were discovered in the reaction.
Article
Chemistry, Inorganic & Nuclear
Mohamed H. Abdel-Rhman, Ghada Samir, Mostafa A. Hussien, Nasser M. Hosny
Summary: This study investigated the dissolution performance of hydrazine carbonate solution on zirconium dibutyl phosphate (Zr-DBP), and found that hydrazine carbonate solution could promote the dissolution of Zr-DBP. The effects of dissolution temperature and hydrogen peroxide concentration on the dissolution efficiency were also explored, and the corrosion effect on stainless steel by hydrazine carbonate solution was studied.
Article
Chemistry, Inorganic & Nuclear
Qiaofang Fu, Fangyu Tan, Wu Ying
Summary: This study successfully prepared vermiculite/g-C3N4/TiO2 composites and found that under specific conditions, the composites exhibited excellent degradation effects, with a high degradation rate for methylene blue. Additionally, the composites were able to enhance surface area, reduce carrier loading rate, improve light energy utilization, and enhance durability.
Article
Chemistry, Inorganic & Nuclear
Annabelle G. W. Hodson, Robert T. Mason
Summary: Functionalised polystyrene resins have been found to be efficient catalysts in the synthesis of specific complexes, with the conversion rate controlled by the polymer structure. The addition of amines or amino acids can further yield substituted 13-butadienyl complexes, which have been analyzed by NMR.
Article
Chemistry, Inorganic & Nuclear
C. Kavitha, S. Anbarasan, P. Subramaniam
Summary: The sulfoxidation of PMAAs by the oxo(salen)chromium(V) complex in aqueous acetonitrile medium was studied. The rate of the reaction is influenced by the polarity of the medium and the substituents on PMAA, with electron donating substituents accelerating the reaction and electron withdrawing substituents retarding the reaction.
Article
Chemistry, Inorganic & Nuclear
Qiang-Qiang Liu, Mithun Kumar Ghosh, Shu-Lan Cai, Xiao-Hong Liu, Lu Lu, Mohd. Muddassir, Tanmay Kumar Ghorai, Jun Wang
Summary: Three newly developed coordination polymers (CPs) with semiconducting properties were synthesized using hydrothermal methods. These CPs exhibit superior photocatalytic activity and can degrade organic pollutants effectively.
Article
Chemistry, Inorganic & Nuclear
Mehrnaz Aliahmadi, Ali Nemati Kharat, Jan Janczak
Summary: This study proposes a method for synthesizing allyl alcohol using cost-effective and renewable bio-resource glycerol. By utilizing catalysts, alcohol as a solvent, and a reducing agent, allyl alcohol with an efficiency of 100% was obtained. The structures of the newly synthesized complexes were determined using X-ray single crystallography.
Article
Chemistry, Inorganic & Nuclear
Ji-Yan Gao, Nan Zhang, Dong-Sheng Huang, Xiang-Rong Liu, Zai-Wen Yang, Shun-Sheng Zhao
Summary: Two new transition metal complexes I and II were synthesized and characterized. The complexes exhibited strong thermal stabilities and showed effective binding to CT-DNA and BSA. Complex II exhibited stronger inhibition activity against P. aeruginosa than gentamicin sulfate. These complexes have potential applications in drug research.
Article
Chemistry, Inorganic & Nuclear
Rishabh Ujjval, Hilal Ahmad Khan, Chinnappan Sivasankar, Natesan Thirupathi
Summary: In this study, a rigid 2-aminobenzimidazole type guanidine and its platinum complexes were synthesized through a series of reactions and characterized by various physical and chemical methods. The reaction mechanism was also explained through DFT calculations.
Article
Chemistry, Inorganic & Nuclear
Marcelo Carpes Nunes, Thais Zaboenco, Vinicius Kemper Melara, Gabriel Barros Baptistella, Andre Luiz Barboza Formiga, Andersson Barison, Fabio Souza Nunes
Summary: A new luminescent molecular thermometer has been developed, which uses the spin-crossover equilibrium of a nickelcyclen derivative to measure temperature. The sensor shows high sensitivity and accuracy.
Article
Chemistry, Inorganic & Nuclear
Yuyu Shan, Zhenqin Zhao, Xia Zhang, Zhan Wu, Xiu-Ling Li
Summary: In this study, a new bridging ligand was synthesized through refluxing, and two mononuclear Cu(I) complexes and two trinuclear Cu(I)-Eu(III) complexes were obtained through self-assembly. The Cu(I) antenna chromophores successfully transferred energy to the Eu(III) centers, achieving sensitized Eu(III) luminescence.
Article
Chemistry, Inorganic & Nuclear
Gabriela Sanchez-Lecuona, Mayra C. Vazquez-Nunez, Bruno Donnadieu, Miguel A. Munoz-Hernandez, Virginia Montiel-Palma
Summary: The reaction of RuHCl(PPh3)3 with GaMe3 has been studied and the obtained complexes were analyzed in detail. The results indicate the formation of a Ru-Ga bond, suggesting the generation of an in situ formed ambiphilic phosphinogallyl ligand. This is of significance for understanding the interaction between metal-halogen bonds and metal-small molecule bonds.
Article
Chemistry, Inorganic & Nuclear
Sevil Sener, Nursel Acar, Fatih Dumludag
Summary: The synthesis, characterization, spectroscopic and bonding features of a new Co (II) phthalocyanine compound containing two thiocarbohydrazone groups were explained. The compound showed semiconductor properties and potential as a temperature sensor.
Article
Chemistry, Inorganic & Nuclear
Ledja B. O. Davi, Aryanna S. P. N. Costa, Mariana S. Silva, Adriana S. Ribeiro, Cintya D. A. E. S. Barbosa, Julio C. S. Da Silva, Dimas J. P. Lima, Daniela S. Anunciacao
Summary: In this study, a dansyl derivative sensor called o-PDDS was prepared and used for the detection of Al3+ ions in water. The o-PDDS sensor exhibited high sensitivity and linear response towards Al3+ ions. Experimental and computational studies confirmed a 1:1 stoichiometry ratio between o-PDDS and Al3+ ions. Real sample analysis demonstrated the selectivity and detection performance of the sensor, indicating its potential for field use.