Materials Advances最新文献

{"title":"Porphyrin-based polyimide 2D porous organic polymers: band engineering for bifunctional electrocatalytic OER and HER.","authors":"Deepak Bansal, Amr A Nada, Samrat Ghosh, Indresh Kumar Pandey, Nicolas D Boscher","doi":"10.1039/d5ma00957j","DOIUrl":"10.1039/d5ma00957j","url":null,"abstract":"<p><p>The development of bifunctional catalysts for overall water splitting is a rapidly advancing area of research. In this study, we report the synthesis of novel porphyrin-based polyimide polymers for electrocatalytic oxygen (OER) and hydrogen evolution reactions (HER). By assembling aminophenyl porphyrins with naphthalenetetracarboxylic dianhydride (NTCDA) linkers, donor-acceptor (D-A) architectures that enable extended π-electron delocalization and tailored frontier molecular orbitals conducive to water splitting were formed. FTIR, XPS and XRD analyses confirmed successful imidization between aminophenyl porphyrins (TAPP, NiTAPP, and CuTAPP) and NTCDA, resulting in π-π stacked two-dimensional polymer networks POP-1, POP-2, and POP-3, respectively. Band structure studies <i>via</i> XPS revealed that both imidization and metal incorporation significantly influence the electronic properties and enable the fine-tuning of the HOMO-LUMO levels for enhanced electrocatalytic activity. Electrochemical evaluations demonstrated the bifunctional nature of the polymers, with the Ni(ii)-based polymer, <i>i.e.</i>POP-2, showing the best performance. POP-2 exhibited a lower OER onset potential (1.45 V <i>vs.</i> RHE) and smaller Tafel slope (167 mV dec^-1) compared to its metal-free (POP-1) and Cu(ii)-based (POP-3) analogues. Similarly, in the HER, POP-2 displayed a reduced onset potential (<i>ca.</i> 159 mV) and a lower Tafel slope (<i>ca.</i> 82 mV dec^-1), attributed to the favorable redox behavior of Ni, optimal hydrogen binding energy, and enhanced charge delocalization. Electrochemical impedance spectroscopy confirmed its superior conductivity, while Mott-Schottky and XPS analyses revealed beneficial band alignment and increased charge carrier density. Long-term stability tests further validated the durability of POP-2. This work highlights the potential of metal-coordinated conjugated polymers as efficient and robust heterogeneous bifunctional electrocatalysts for overall water splitting.</p>","PeriodicalId":18242,"journal":{"name":"Materials Advances","volume":" ","pages":""},"PeriodicalIF":4.7,"publicationDate":"2025-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12461690/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145186289","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Multi-component catalysts with integrated MWW-type layers and mixed oxide domains for glucose-to-formic acid oxidation","authors":"Cristina Esteban, Alexandra Velty and Urbano Díaz","doi":"10.1039/D5MA00633C","DOIUrl":"https://doi.org/10.1039/D5MA00633C","url":null,"abstract":"<p >The development of efficient and multi-component catalysts with distinct active sites is essential to promote chemically and economically circular processes and to achieve sustainable development. In this work, various multi-component materials were synthesized combining the properties of MWW zeolitic layers and MgAl mixed oxides. Synthesis conditions were successfully developed and optimized to achieve the <em>in situ</em> formation of nanometric sub-domains of layered double hydroxides (LDHs) on the surfaces and within the microporous cavities and channels of MWW layers (methods I and II). Additionally, multi-component materials were prepared by mixing MWW lamellar precursors and preformed layered double hydroxides, using swelling and exfoliation techniques and combined with sonification and ball-milling techniques (method III). Calcination yielded materials effectively integrating zeolitic MWW layers with MgAl oxides, displaying distinct structural features depending on the synthesis method. The catalytic performance of these materials was evaluated in the oxidation of glucose to formic acid (FA) using H<small>₂</small>O<small>₂</small> as the oxidant. Among the catalysts investigated, MWW@MgAl-<em>in situ</em>-40, which combined suitable textural properties and basicity, showed superior activity, achieving a 47.7% FA yield at 66.2% glucose conversion after 7.5 h at 363 K in dioxane.</p>","PeriodicalId":18242,"journal":{"name":"Materials Advances","volume":" 19","pages":" 7032-7055"},"PeriodicalIF":4.7,"publicationDate":"2025-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/ma/d5ma00633c?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145184035","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"On-demand photoresponsive liposomes-in-gel to prevent UV light-induced cellular damage","authors":"Patrick Pan, Shaun W. P. Rees, Darren Svirskis, David Barker, Geoffrey I. N. Waterhouse and Zimei Wu","doi":"10.1039/D5MA00460H","DOIUrl":"https://doi.org/10.1039/D5MA00460H","url":null,"abstract":"<p >To achieve prolonged and on-demand sunscreen effects, liposomes containing a lipid with a photoresponsive azobenzene moiety (BisAzo-PC) were constructed and photoprotective effects were demonstrated on a fibroblast cell line. The synthesis of BisAzo-PC was confirmed by FTIR, LC–MS, and <small>¹</small>H NMR. Photoresponsive and thermal properties of BisAzo-PC were studied, revealing a rapid UV-induced <em>trans</em>–<em>cis</em> isomerization and a slow <em>cis</em>–<em>trans</em> isomerisation. BisAzo-PC liposomes (∼120 nm, optimal size for dermal delivery) were prepared and loaded with both hydrophilic (benzophenone-4) and lipophilic (octocrylene) UV filters, achieving high entrapment efficiencies (24.8% and 99.9%) and loading capacities (12.2% and 9.9%, w/w), respectively. The liposomes demonstrated rapid UV filter release triggered by UV irradiation (365 nm), with an extended-release period of 6 hours. Liposomes incorporated into a hydroxypropyl methylcellulose (HPMC)–polyvinylpyrrolidone (PVP)-based bioadhesive hydrogel provided a universal sun protection factor (uSPF) value of 38.1 ± 1.1, exceeding that of a commercial sunscreen of 32.3 ± 0.1. The liposome-in-gel reproducibly protected fibroblasts from UV exposure and reduced intracellular reactive oxygen species (ROS) by 72% for up to 6 hours, accompanied by a 45% reduction of the lipid peroxidation marker malondialdehyde (MDA) and antioxidant enzyme activities of superoxide dismutase (SOD) and glutathione peroxidase (GPx). The results highlight the potential of photoresponsive liposomes-in-gel with extended photoprotective properties to be further translated into a long-acting sunscreen by addressing the main concerns of conventional sunscreens, reducing the need for frequent applications and the risk of systemic absorption of UV filters.</p>","PeriodicalId":18242,"journal":{"name":"Materials Advances","volume":" 20","pages":" 7312-7331"},"PeriodicalIF":4.7,"publicationDate":"2025-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/ma/d5ma00460h?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145284128","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Inverse nanocomposites of polyaniline/MnO2 nanorods for efficient production of hydrogen peroxide through electrocatalytic oxygen reduction in acidic solution","authors":"Md Yeasin Pabel, Muhammed Shah Miran and Md. Mominul Islam","doi":"10.1039/D5MA00688K","DOIUrl":"https://doi.org/10.1039/D5MA00688K","url":null,"abstract":"<p >The selective two-electron oxygen reduction reaction (2e<small>⁻</small> ORR) producing H<small>₂</small>O<small>₂</small> through an electrocatalytic approach is an attractive alternative to the industrial anthraquinone oxidation method, enabling decentralized H<small>₂</small>O<small>₂</small> production. This study explored the potential use of an inverse nanocomposite comprising polyaniline (PAni)-embedded α-MnO<small>₂</small> nanorods for a selective 2e<small>⁻</small> ORR in acidic medium. α-MnO<small>₂</small>, PAni, and inverse composites of α-MnO<small>₂</small>/PAni with different compositions were synthesized using hydrothermal, chemical oxidative polymerization, and solution sonication methods, respectively. Transmission electron microscopy, Fourier-transform infrared spectroscopy, X-ray diffraction, and X-ray photoelectron spectroscopy were employed to clarify various aspects, such as morphology, functional groups, microphase, crystallinity, <em>etc.</em>, of the prepared materials. The electrocatalytic activity of the prepared inverse nanocomposites containing minute amounts of PAni dispersed phase towards the ORR in an acidic solution was evaluated with voltammetry at a rotating ring disk electrode, while the rate of H<small>₂</small>O<small>₂</small> production was determined through chronoamperometry and the iodometric titration method. The rod-like, inverse α-MnO<small>₂</small>/PAni nanocomposite catalyst performs commendably for the 2e<small>⁻</small> ORR with, on average, 80% selectivity toward H<small>₂</small>O<small>₂</small> at a production rate of 433 mmol g<small>_cat</small><small>⁻¹</small> h<small>⁻¹</small>. A plausible mechanism for the ORR on the α-MnO<small>₂</small>/PAni nanocomposite in an acidic medium is discussed. These findings highlight the promise of inverse α-MnO<small>₂</small>/PAni nanocomposites as affordable and efficient electrocatalysts for on-site production of H<small>₂</small>O<small>₂</small> through the ORR.</p>","PeriodicalId":18242,"journal":{"name":"Materials Advances","volume":" 20","pages":" 7469-7478"},"PeriodicalIF":4.7,"publicationDate":"2025-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/ma/d5ma00688k?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145284144","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Revolutionizing environmental clean-up: novel CORN-MOF-2/PVDF composite membranes for the removal of multi-pollutants","authors":"Usha Nellur and Mahesh Padaki","doi":"10.1039/D5MA00581G","DOIUrl":"https://doi.org/10.1039/D5MA00581G","url":null,"abstract":"<p >The increasing prevalence of complex multi-pollutants, including heavy metals, dyes, and pharmaceutical residues, in wastewater streams demands advanced materials capable of efficient and selective separation. This study addresses the critical challenge of removal of diverse pollutants by developing CORN-MOF-2/PVDF composite membranes, in which novel CORN-MOF-2(Ce) was functionalized into a PVDF matrix by a nonsolvent-induced phase-inversion method (NIPS). The introduced MOF enhanced the hydrophilicity of the resulting membranes and provided a higher permeability of 434.95 L m<small>⁻²</small> h<small>⁻¹</small> bar<small>⁻¹</small>. Membrane performance was evaluated through a series of filtration tests using synthetic wastewater containing heavy metal ions, dyes and pharmaceutical compounds. The CORN-MOF-2/PVDF membranes transitioned into a more selective interface, leading to absolute rejection of a wide range of pollutants—99% for dopamine hydrochloride (DP), Cr<small>₂</small>O<small>₇</small><small>²⁻</small>, Alcian blue (AB), and Congo red (CR). Furthermore, the study extended to investigate the removal efficiency of the optimized membrane under different pH conditions, achieving optimal performance at neutral pH. A combination of size exclusion, affinity-based bonding, and charge-based interactions was followed to attain superior rejection rates. The simultaneous removal of multiple pollutants from the aqueous system demonstrates the superior versatility and efficiency of the fabricated membranes in handling complex multi-component contaminations. The treated water resulting from this work adheres to the WHO's standards for safe water. Additionally, antifouling studies showed a flux recovery ratio of &gt;95% after multiple cycles.</p>","PeriodicalId":18242,"journal":{"name":"Materials Advances","volume":" 19","pages":" 6894-6906"},"PeriodicalIF":4.7,"publicationDate":"2025-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/ma/d5ma00581g?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145184013","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Optical and photothermal properties of CsWO3 nanoparticles endow poly(dimethylsiloxane) fluidic lenses with non-invasive thermo-optic and thermo-expansion effects for fluorescence imaging","authors":"Yu-Hang Cheng, Sheng-Yu Kao, Ming-Hsuan Ho, Jui-Wen Pan and Po-Sheng Hu","doi":"10.1039/D5MA00435G","DOIUrl":"https://doi.org/10.1039/D5MA00435G","url":null,"abstract":"<p >The capabilities of CsWO<small>₃</small> nanoparticles to transmit in the visible range from 400 nm to 650 nm and undergo strong near-infrared photothermal conversion from 750 nm to 2400 nm may make them functional materials in the fabrication of focus-tunable optical lenses. In this research, the noninvasive focal length tuning of a poly(dimethylsiloxane) (PDMS)-structured fluidic lens by near-infrared irradiated cesium tungsten oxide nanoparticles (CsWO<small>₃</small> NPs), which generates heat and induces photothermal and thermo-optic effects on PDMS, was explored. The temperature-dependent mechanical property of PDMS and the stoichiometric, structural and photothermal properties of CsWO<small>₃</small> NPs were characterized. Young's modulus ranged from 4.5 MPa to 3.7 MPa as the temperature of the PDMS sample increased from 25 °C to 48 °C and allowed a delicate tuning of the fluidic lens’ front focal length from 21.02 mm to 20.89 mm when the near-infrared (NIR) optical power density increased from 0 mW cm<small>⁻²</small> to 226 mW cm<small>⁻²</small> while retaining the concentric shape of the focused beam spot. The fluidic lens was then incorporated into the detection arm of a light sheet fluorescence microscope, and it successfully captured the contrast-enhanced images of the fluorescein-coated CsWO<small>₃</small> NPs.</p>","PeriodicalId":18242,"journal":{"name":"Materials Advances","volume":" 19","pages":" 6919-6930"},"PeriodicalIF":4.7,"publicationDate":"2025-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/ma/d5ma00435g?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145184027","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Carbazole-linked through-space TADF emitters for OLEDs: tuning photophysics via molecular architecture and exciton dynamics","authors":"Sanyam, Nishi Tejiyan and Anirban Mondal","doi":"10.1039/D5MA00731C","DOIUrl":"https://doi.org/10.1039/D5MA00731C","url":null,"abstract":"<p >Thermally activated delayed fluorescence (TADF) offers a promising route to highly efficient organic light-emitting diodes (OLEDs), yet conventional D–A–D and A–D–A architectures often suffer from conformational flexibility, leading to multiple singlet excited states and enhanced non-radiative decay. These effects compromise both emission efficiency and color purity. While multi-resonant TADF (MR-TADF) systems provide improved rigidity, their planar structures favor π–π stacking, causing aggregation-induced quenching (ACQ). This study presents a molecular design strategy integrating a carbazole unit as a rigid, non-planar bridge to mitigate intramolecular rotation and suppress ACQ by disrupting parallel stacking. A set of 21 such D–A–D and A–D–A type molecules was computationally designed and analyzed. The optimized structures exhibit spatially separated frontier orbitals, resulting in small singlet–triplet energy gaps (Δ<em>E</em><small>_ST</small>), fast radiative and reverse intersystem crossing rates, and near-unity photoluminescence quantum yields (PLQYs). Exciton dynamics simulations further confirm efficient TADF behavior, while molecular dynamics trajectories reveal conformational stability and through-space charge transfer characteristics. Notably, <strong>A1</strong>–<strong>D3</strong>–<strong>A1</strong> achieves an exceptionally small Δ<em>E</em><small>_ST</small> of 0.001 eV and the highest <em>k</em><small>_TADF</small> of 1.34 × 10<small>⁶</small> s<small>⁻¹</small>, enabling rapid triplet harvesting, while <strong>D1</strong>–<strong>A2</strong>–<strong>D3</strong> combines high oscillator strength with efficient TADF dynamics. These results demonstrate that subtle architectural tuning can yield substantial performance improvements, highlighting carbazole-bridged TADF emitters as a pathway toward stable, high-efficiency OLED materials.</p>","PeriodicalId":18242,"journal":{"name":"Materials Advances","volume":" 19","pages":" 6978-6990"},"PeriodicalIF":4.7,"publicationDate":"2025-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/ma/d5ma00731c?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145184032","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A hybrid polyaniline/dolomite–palygorskite framework for environmental remediation: experimental design and molecular-level adsorption interpretation","authors":"Samira El Omari, Abdelaziz Imgharn, Youness Abdellaoui, Oscar May Tzuc, Abdallah Albourine, Lahcen Bazzi, Mohamed Laabd and Karim Benhabib","doi":"10.1039/D5MA00660K","DOIUrl":"https://doi.org/10.1039/D5MA00660K","url":null,"abstract":"<p >Textile and dyestuff manufacturing industries are recognized as the largest source of water contamination. This study explores the effectiveness of the polyaniline@dolomite–palygorskite clay (PANi@DPC) hybrid composite for removing orange G (OG) dye from polluted water through adsorption. The PANi@DPC composite was analyzed by scanning electron microscopy (SEM) coupled with energy dispersive spectroscopy (EDS), Fourier transform infrared (FTIR) spectroscopy and X-ray diffraction (XRD). The main findings prove the successful incorporation of PANi on the palygorskite surface. The PANi@DPC composite exhibited an open morphology richly decorated with nitrogen/oxygen-containing functionalities (<em>e.g.</em>, –NH, <img>NH and –OH), which boosts the diffusion and adsorption of OG dye. The OG dye adsorption experiments were conducted to assess the effect of the operational parameters. The PANi@DPC composite exhibited an impressive removal performance (&gt;97.75%) for OG dye over a broad pH range of 2.6–8.4. Kinetics and isotherm data were adequately simulated by the pseudo-second order (<em>R</em><small>²</small> = 0.997) and Freundlich (<em>R</em><small>²</small> = 0.991) models. The PANi@DPC composite was effortlessly regenerated and efficiently reused for OG removal. FTIR analysis suggested that the adsorption mechanism is predominantly mediated by H-bonds and π–π stacking. Applying a response surface methodology, the highest OG removal performance of 99.54% was achieved under the optimal conditions of pH 6.0, 1.0 g L<small>⁻¹</small> PANi@DPC dose, 20 mg L<small>⁻¹</small> initial OG concentration, 120 min contact time and 25 °C. Advanced statistical physics simulation revealed that the OG adsorption follows multi-anchorage and multi-molecular binding mechanisms. Overall, the PANi@DPC hybrid composite can serve as a prospective binder material for cleaning up the OG dye-containing wastewater.</p>","PeriodicalId":18242,"journal":{"name":"Materials Advances","volume":" 20","pages":" 7409-7426"},"PeriodicalIF":4.7,"publicationDate":"2025-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/ma/d5ma00660k?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145284139","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"APTES modified magnetite nanoparticles as a theranostic nanocarrier: a study of loading and sustained release of daunorubicin","authors":"Vivekananda Saha, Pohlee Cheah, Ranajit Saha, Yongfeng Zhao and Goutam Biswas","doi":"10.1039/D5MA00514K","DOIUrl":"https://doi.org/10.1039/D5MA00514K","url":null,"abstract":"<p >In recent decades, iron oxide nanoparticles have been recognized as effective magnetic resonance imaging (MRI) contrast agents and efficient nanocarriers in various drug delivery systems. In this study, APTES-modified iron oxide nanoparticles (APTES@MNPs) were synthesized using a co-precipitation method. This was followed by the implementation of a modified refluxometric method to investigate the loading and sustained release of the chemotherapeutic drug, daunorubicin. Additionally, the <em>T</em><small>₂</small> contrasting ability was examined to elucidate the theranostic properties of drug-loaded nanoparticles. The fabricated nanoparticles were characterized using DLS, FTIR, PXRD, FESEM, TEM, XPS, VSM, TGA, and Raman spectroscopy techniques. The nanoparticles exhibited a high <em>T</em><small>₂</small> contrast behavior with <em>r</em><small>₂</small>/<em>r</em><small>₁</small> = 16.5. The kinetic study of drug loading showed that the adsorption model followed pseudo-second-order kinetics with a pseudo-second-order rate constant (<em>k</em><small>₂</small>) of 0.00134 mg g<small>⁻¹</small> min<small>⁻¹</small> at pH ∼ 10. The drug release study showed a result of 72% desorption at pH ∼ 5.2, whereas at pH ∼ 7.4, it was only 12.6%. In addition, adsorption experiments were performed at pH ∼ 10. Furthermore, the adsorption of daunorubicin onto the nanoparticles was supported by computational results. Overall, APTES@MNPs acted as a potent and biocompatible sustained-release drug carrier with good diagnostic properties for anticancer theranostic applications.</p>","PeriodicalId":18242,"journal":{"name":"Materials Advances","volume":" 19","pages":" 6843-6855"},"PeriodicalIF":4.7,"publicationDate":"2025-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/ma/d5ma00514k?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145184009","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Modification of electron acceptors with fused alicyclic rings through inverse electron-demand Diels–Alder reactions to tune the optical properties of conjugated polymers","authors":"Dinghui Chen, Kang Le Osmund Chin, Xiang Yun Debbie Soo, Feng Xia Wei, Ke Li, Pin Jin Ong, Qiang Zhu, Xizu Wang, Teck Lip Dexter Tam, Zhuang Mao Png, Ming Hui Chua, Hong Meng and Jianwei Xu","doi":"10.1039/D5MA00507H","DOIUrl":"https://doi.org/10.1039/D5MA00507H","url":null,"abstract":"<p >Traditional strategies for manipulating the optical properties of conjugated polymers primarily focus on modifications of the polymer backbone, including donor–acceptor engineering and adjusting the conjugation length. Here, we report a novel approach to modulate the electronic structure of conjugated polymers by incorporating alicyclic rings through inverse electron-demand Diels–Alder reactions. Two conjugated polymers, <strong>PCT-8</strong> and <strong>PBT-7</strong>, were synthesized using monomers with an eight-membered and a bridged six-membered aliphatic ring, respectively. These structural modifications lead to noticeable changes in UV-visible absorption (Δ<em>λ</em><small>_max</small> = 47 nm for <strong>PCT-8</strong> and <strong>PBT-7</strong>), optical band gaps (2.38 eV and 2.19 eV, <strong>PCT-8</strong> and <strong>PBT-7</strong>, respectively), polymer packing, and intermolecular interactions, while maintaining the integrity of the polymer backbone. Besides, both polymers demonstrate electrochromic properties. This strategy offers a versatile, minimally invasive method for tuning the optical properties of conjugated polymers, paving the way for the design of multifunctional materials for optoelectronic applications.</p>","PeriodicalId":18242,"journal":{"name":"Materials Advances","volume":" 20","pages":" 7436-7442"},"PeriodicalIF":4.7,"publicationDate":"2025-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/ma/d5ma00507h?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145284141","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}