Article
Engineering, Electrical & Electronic
Govindasamy Sathiyan, Dhamodiran Mathivanan, Balasubramaniam Bhuvaneshwari, Ashish Garg, Raju Kumar Gupta, Anand Singh
Summary: This study successfully synthesized a novel oligomer TRZBT via Wittig-Horner reaction, which possesses good optical properties and high sensitivity in detecting nitro-explosives.
SENSORS AND ACTUATORS A-PHYSICAL
(2021)
Article
Chemistry, Multidisciplinary
Lu Dai, Anwang Dong, Xiangjian Meng, Huanyu Liu, Yueting Li, Pengfei Li, Bo Wang
Summary: This study focuses on COFs-based photocatalysts, in which a 2D fully conjugated ethylene-linked COF (BTT-BPy-COF) with active sites was fabricated. A post-protonation strategy was employed to fine-tune the active sites, leading to improved charge-separation efficiency and increased hydrophilicity. The optimized BTT-BPy-PCOF exhibited a remarkable H-2 evolution rate under visible light, surpassing a biphenyl-based COF 6 times. Post-protonation was proven to be a potential universal strategy for promoting photocatalytic H-2 evolution and providing important guidance for the design of highly efficient organic semiconductor photocatalysts.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Multidisciplinary
Jun Cheng, Yuting Wu, Wei Zhang, Jie Zhang, Lei Wang, Meng Zhou, Fengtao Fan, Xiaojun Wu, Hangxun Xu
Summary: This study successfully developed highly crystalline metal-free COFs for photocatalytic overall water splitting, which exhibit remarkable photocatalytic activity. The importance of the cyanovinylene linkage in modulating band structure and promoting charge separation is demonstrated.
ADVANCED MATERIALS
(2023)
Article
Engineering, Chemical
Rujie Yang, Youwan Wang, Jiahao Zhang, Wuerkaixi Maimuli, Liang Chen, Yongshun Song, Zimeng Wang, Shanshan Liang, Haiping Fang
Summary: In this study, a new GO membrane structure, TU-GO-KOH membrane, was proposed, which has high water permeance and rejection, and exhibits good stability under long-term and high pressure conditions. The membrane remains stable even under harsh conditions, contributing to sustainable water treatment.
Article
Polymer Science
Linfang Zhou, Lin Zhou, Ming Kang, Xiuli Zhao, Guanjun Chang, Mao Chen
Summary: The article introduces a new method of preparing tough non-covalent adaptable networks using cation-pi cross-linking, and the experiment demonstrates that the cross-linked epoxy exhibits excellent mechanical properties and dynamic properties.
Article
Multidisciplinary Sciences
Shigeyuki Yamada, Akito Nishizawa, Kazuki Kobayashi, Keigo Yoshida, Masato Morita, Tomohiro Agou, Takaaki Hosoya, Hiroki Fukumoto, Tsutomu Konno
Summary: This study focuses on the design and synthesis of dual-state emissive luminophores based on unsymmetrical hexafluorocyclopentene-linked twisted pi-conjugated structures, showcasing their ability to emit light in both solution and solid states with high efficiency and optical performance.
Article
Chemistry, Physical
Joachim Seelig, Anna Seelig
Summary: Protein stability is crucial in life sciences. Spectroscopic techniques are used to investigate thermal protein unfolding, and models are needed to extract thermodynamic properties. Differential scanning calorimetry (DSC) is a unique method that directly measures the heat capacity Cp(T), and a new model allows for the evaluation of thermodynamic parameters. The experimental thermodynamic data can be compared with different models.
JOURNAL OF PHYSICAL CHEMISTRY B
(2023)
Article
Chemistry, Physical
Joachim Seelig, Anna Seelig
Summary: Protein stability is crucial in life sciences, and thermal protein unfolding is extensively studied using spectroscopic techniques. Differential scanning calorimetry (DSC) measures the thermodynamic property of heat capacity directly and provides valuable insights. However, the commonly used chemical equilibrium two-state model may lead to incorrect thermodynamic consequences. In this study, we propose two new models, the OU(T)-weighted chemical equilibrium model and the statistical-mechanical two-state model, which accurately analyze experimental heat capacity data and predict temperature profiles for protein unfolding enthalpy, entropy, and free energy.
JOURNAL OF PHYSICAL CHEMISTRY B
(2023)
Article
Chemistry, Multidisciplinary
Eric Sidler, Patrick Zwick, Charlotte Kress, Ksenia Reznikova, Olaf Fuhr, Dieter Fenske, Marcel Mayor
Summary: The synthetic access to macrocyclic molecular topologies with interesting photophysical properties has been greatly improved by using pseudo-meta [2.2]paracyclophanes (PCPs) as corner units. The all-carbon enantiopure macrocycles bearing three to six pseudo-meta PCPs linked by 1,3-butadiyne units exhibit efficient electronic communication, angled substituents, planar chirality, and unprecedented high molar circular dichroism values.
CHEMISTRY-A EUROPEAN JOURNAL
(2022)
Article
Biochemistry & Molecular Biology
Sarah A. H. Hulgan, Jeffrey D. Hartgerink
Summary: This Perspective highlights recent developments in the use of collagen mimetic peptides (CMPs) for understanding and controlling the triple helical structure. Factors influencing triple helix assembly, such as amino acid propensity, pairwise interactions, and long-range effects, have been studied, leading to a better understanding and predictability for peptides with natural amino acids. In addition, unnatural amino acids and covalent cross-linking have been successfully utilized to stabilize the triple helix, allowing for the design and application of more complex and well-controlled collagen mimetic biomaterials.
Review
Chemistry, Multidisciplinary
Bi Shuai, Meng Fancheng, Zhang Zixing, Wu Dongqing, Zhang Fan
Summary: Vinylene-linked covalent organic frameworks (COFs) are a type of organic porous material with fully pi-conjugated structures and high stability. This review summarizes the chemistry and the recent development in properties and functions of vinylene-linked COFs. The further development of this type of COFs is also discussed.
CHEMICAL RESEARCH IN CHINESE UNIVERSITIES
(2022)
Article
Polymer Science
Chen Wang, Fengfeng Huang, Xiaoyu Huang, Guolin Lu, Chun Feng
Summary: This article introduces a facile strategy to fabricate polymer nanofibers based on organic photovoltaics (OPV) with morphological stability and surface tailorability. By combining living crystallization-driven self-assembly with thiol-ene chemistry, length-controllable fiber-like micelles can be generated with high morphological stability and easy surface adjustment. The resulting CPNFs show negligible cytotoxicity, making them suitable for biomedical applications.
MACROMOLECULAR RAPID COMMUNICATIONS
(2023)
Article
Biochemistry & Molecular Biology
Vipin Bahadur Singh
Summary: This study investigates the conformation of dopamine in aqueous solution using different theoretical methods, revealing the higher energy level of the trans isomer in water. Additionally, the experimental Raman spectrum of dopamine was found to be significantly influenced by the solvent.
ACS CHEMICAL NEUROSCIENCE
(2021)
Article
Biochemistry & Molecular Biology
Hongyuan Zhu, Shanjing Xu, Jiaojiao Wu, Jun Hu, Xinli Mao
Summary: This study investigates a roughly orthogonal cation-pi-pi stacking system at the YAP1-TEAD4 interface and discovers a synergistic effect between cation-pi and pi-pi interactions. The binding affinity of this stacking system can be regulated by the presence of diverse aromatic/charged amino acids, confirming its importance in the formation of the YAP1-TEAD4 complex.
JOURNAL OF MOLECULAR RECOGNITION
(2022)
Article
Biophysics
Joachim Seelig, Anna Seelig
Summary: Testing and predicting protein stability is important for viral and cancer therapies. This study uses experimental data and a new model to analyze protein stability and unfolding, providing insights into protein thermodynamics and allowing comparisons with other experiments and calculations.
BIOPHYSICAL REPORTS
(2022)
Article
Chemistry, Multidisciplinary
Bai A. Anjali, Cherumuttathu H. Suresh
JOURNAL OF COMPUTATIONAL CHEMISTRY
(2020)
Article
Chemistry, Organic
Thondikkal Sulfikarali, Jayaprakash Ajay, Cherumuttathu H. Suresh, Padinjare Bijina, Sabapathi Gokulnath
JOURNAL OF ORGANIC CHEMISTRY
(2020)
Article
Chemistry, Multidisciplinary
Anjali Nirmala, Indulekha Mukkatt, Sreejith Shankar, Ayyappanpillai Ajayaghosh
Summary: The study demonstrates a method to use a mixture of iron (II) chloride and bipyridine as a reversible thermochromic switch and logic operator, showing generality. It also proves the concept of an optically readable multi-state volatile memory with temperature as a precision input.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Multidisciplinary
P. R. Nitha, V. Jayadev, Sourava C. Pradhan, Velayudhan V. Divya, Cherumuttathu H. Suresh, Jubi John, Suraj Soman, Ayyappanpillai Ajayaghosh
CHEMISTRY-AN ASIAN JOURNAL
(2020)
Article
Chemistry, Physical
Vishal Jose, Huimin Hu, Eldho Edison, William Manalastas, Hao Ren, Pinit Kidkhunthod, Sivaramapanicker Sreejith, Anjali Jayakumar, Jean Marie Vianney Nsanzimana, Madhavi Srinivasan, Jinho Choi, Jong-Min Lee
Summary: This study presents a facile method for preparing bimetallic Fe and Co sites entrapped in nitrogen-doped hollow carbon nanospheres (Fe,Co-SA/CS), demonstrating promising activity for both oxygen reduction reaction (ORR) and oxygen evolution reaction (OER).
Article
Nanoscience & Nanotechnology
Indulekha Mukkatt, Anjali Nirmala, Nayan Dev Madhavan, Sreejith Shankar, Biswapriya Deb, Ayyappanpillai Ajayaghosh
Summary: The study designed three tetraterpyridine ligands with variations in their core architecture to create spray-coated electrochromic assemblies of iron(II)-based metallosupramolecular polymer network films. These assemblies exhibited high coloration efficiencies and optical contrast, suitable for electrochromic devices. The ligand-structure induced differential metal coordination led to porosity and spectroelectrochemical diversification, enabling the creation of electrochromic patterns and images through a simple spray-coating technique.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Multidisciplinary
Gourab Das, Sandeep Cherumukkil, Akhil Padmakumar, Vijay B. Banakar, Vakayil K. Praveen, Ayyappanpillai Ajayaghosh
Summary: In this study, the creation and control of distinct supramolecular energy landscapes for reversible control of excited-state emission processes were demonstrated through cascade energy transfer in chromophore assemblies. Enhanced near-infrared emission was achieved by manipulating morphology and excitation energy transfer with variable solvent composition and ultrasound stimulation.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Multidisciplinary
Anivind Kaur Bindra, Sivaramapanicker Sreejith, Rajendra Prasad, Mahadeo Gorain, Rijil Thomas, Deblin Jana, Mui Hoon Nai, Dongdong Wang, Abhimanyu Tharayil, Gopal C. Kundu, Rohit Srivastava, Sabu Thomas, Chwee Teck Lim, Yanli Zhao
Summary: Designing organic-inorganic hybrids by anchoring plasmonic materials on self-assembled organic substrates is challenging but useful. The in situ anchoring of plasmonic nanoparticles on a designed spherical assembly via bonding formation is presented. This approach paves the way for developing intelligent multifunctional nanosystems capable of cancer detection and imaging.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Sandeep Cherumukkil, Gourab Das, Ravi P. N. Tripathi, G. V. Pavan Kumar, Sunil Varughese, Ayyappanpillai Ajayaghosh
Summary: Bodipy-PE-2 self-assembly forms a layered photonic structure upon thermal annealing, exhibiting angle-dependent iridescence of green and pink with a luminescence shift from yellow to red. The properties are attributed to the micro- and nano-periodicity associated with the layered structure and the phase transformation due to annealing. The material shows active and passive waveguiding properties when excited with 532 and 633 nm laser sources.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Chemistry, Physical
C. K. Vipin, Atul Shukla, Kavya Rajeev, Monirul Hasan, Shih-Chun Lo, Ebinazar B. Namdas, Ayyappanpillai Ajayaghosh, K. N. Narayanan Unni
Summary: Pure white light emission was achieved by combining the exciplex emission with field-induced electromer emission. Electromer emission has significantly long-lived components, indicating possible utilization of triplet excitons in radiative recombination.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Materials Science, Multidisciplinary
Anjali K. Sajeev, Nishkarsh Agarwal, Anjaly Soman, Shilpi Gupta, Monica Katiyar, A. Ajayaghosh, K. N. Narayanan Unni
Summary: The study demonstrates the use of an external light extraction layer made of polydimethylsiloxane and zinc oxide nanoparticles to enhance the efficiency of OLEDs. The layer significantly improves light outcoupling, with white OLEDs showing the highest enhancement of 80%. Green OLEDs also exhibit substantial improvement, followed by red and blue OLEDs.
ORGANIC ELECTRONICS
(2022)
Article
Materials Science, Multidisciplinary
Anirudha R. Rao, Kandammathe Valiyaveedu Sreekanth, Sivaramapanicker Sreejith, Vishal Jose, Shreyas Pethe, Ranjan Singh
Summary: The identification of spectroscopically silent heavy-metal ions in environmental and bio-analytical samples is crucial. In this study, we demonstrate the detection of heavy metal ions at ultralow concentrations using lithography-free scalable thin film optical coatings. This cost-effective and high-sensitivity sensing platform can be used for label-free detection of various heavy metal ions.
ADVANCED OPTICAL MATERIALS
(2022)
Article
Neurosciences
Yi Jayne Tan, Benjamin Y. X. Wong, Ramanathan Vaidyanathan, Sivaramapanicker Sreejith, Sook Yoong Chia, Nagaendran Kandiah, Adeline S. L. Ng, Li Zeng
Summary: The study aimed to determine the expression of three exosomal miRNAs, miR-320a, miR-328-3p, and miR-204-5p, isolated from cerebrospinal fluid of young-onset AD and FTD patients, and their correlation with core AD biomarkers and cognitive scores. The results showed that all three markers exhibited significantly lower expression in AD compared to controls, with miR-328-3p identified as a novel AD biomarker that could differentiate AD from FTD and controls.
JOURNAL OF ALZHEIMERS DISEASE REPORTS
(2021)
Article
Materials Science, Multidisciplinary
Reethu Haridas, Jayadev Velore, Sourava Chandra Pradhan, Asarikal Vindhyasarumi, Karuvath Yoosaf, Suraj Soman, K. N. Narayanan Unni, Ayyappanpillai Ajayaghosh
Summary: Two new molecularly engineered D-pi-A sensitizers, YK 8 and YK 9, based on carbazole have been developed for indoor photovoltaic applications. The efficient power output achieved under various illumination conditions demonstrates the potential of these sensitizers for powering low-power sensors and actuators on the Internet of Things network. The study also explores the role of pi-spacer in recombination and device performance through extensive interfacial studies.
MATERIALS ADVANCES
(2021)
Article
Materials Science, Multidisciplinary
Sarah K. M. McGregor, Chinju Govind, Michael K. R. Wood, Atul Shukla, Hyunsoo Lim, Romain J. Lepage, Elizabeth H. Krenske, Narayanan K. N. Unni, Ayyappanpillai Ajayaghosh, Venugopal Karunakaran, Ebinazar B. Namdas, Shih-Chun Lo
Summary: A new solution-processable N-styrylcarbazole-linked tetraphenylethylene derivative with green-orange emission was synthesized and characterized, showing significant photoluminescence enhancement in neat-film. The excited-state dynamics and enhanced PLQYs in the solid state were attributed to the restriction of structural relaxations, not aggregation effects commonly associated with TPE materials.
ADVANCED PHOTONICS RESEARCH
(2021)
Review
Chemistry, Multidisciplinary
Dan He, Yawen Li, Fuwen Zhao, Yuze Lin
Summary: High trap density in organic solar cells leads to localized charge carriers and reduced carrier lifetime, limiting device efficiency. This feature article summarizes the recent advances of trap suppression by material design and device engineering.
CHEMICAL COMMUNICATIONS
(2024)
Review
Chemistry, Multidisciplinary
Olivier Monfort, Arshitha Madhusudhan, Martin Motola
Summary: This article presents the advantages of coupling photocatalysis and Fenton-based processes for environmental remediation and discusses their synergy. It critically examines the simultaneous triggering of these two processes and provides insights into research approaches. The study aims to enhance understanding of this complex process and highlight the potential integration of new catalysts in current wastewater treatment technology.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Manideepa Dhar, Chittaranjan Mishra, Avijit Das, Uttam Manna
Summary: An approach of 'polymerization of monomers in its aggregated form' has been introduced to tailor the water wettability of fibrous and porous substrates, achieving hydrophobicity to superhydrophobicity transition, as well as patterned wettability. This facile chemical method provides a durable coating with adjustable and patterned wettability for various potential applications.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Saswat Ranjan Bhoi, Chhanda Debnath, Shikha Gandhi
Summary: In this article, a novel catalytic reaction using Pd(0) and Bronsted acid is reported for the synthesis of biologically important imidazolidinone-fused N-heterocycles through redox-neutral intramolecular N-allylation of indoles and pyrroles with alkynes. This atom-economical method is applicable to a wide range of substrates and eliminates the need for leaving groups or oxidizing agents commonly used in traditional allylation reactions.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Longkun Chen, Mingshuai Zhang, Meichen Liu, Zhuoyuan Liu, Yuetong Qiu, Zhilai Zhang, Fuchao Yu, Jiuzhong Huang
Summary: In this study, an efficient Rh(III)-catalyzed selective mono- and dual-C-H bond functionalization/cyclization with iodonium ylide as the sole coupling partner was demonstrated. Fused benzodiazepine skeletons were obtained in excellent yields, providing an improved approach to dual C-H unsymmetrical functionalization.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Alice Kennett, Sven Epple, Gabriella van der Valk, Irene Georgiou, Evelyne Gout, Romain R. Vives, Angela J. Russell
Summary: This study presents the design and synthesis of sulfated disaccharide inhibitors based on IdoA(2S)-GlcNS(6S), which showed potent inhibition of Sulf-2. The results suggest that IdoA(2S)-GlcNS(6S) is the shortest fragment size required for effective inhibition of Sulfs, and a trisulfated disaccharide is identified as the minimal fragment size of heparan sulfate for effective endosulfatase inhibition.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Mauro Garbini, Andrea Brunetti, Riccardo Pedrazzani, Magda Monari, Massimo Marcaccio, Giulio Bertuzzi, Marco Bandini
Summary: The self-adaptability of galvanostatic electrolysis was found to be helpful in a multistage chemo- and diastereoselective electrochemically promoted cyclodimerization of chalcones. Through a series of reductive events, densely functionalized cyclopentanes with five contiguous stereocenters were obtained (25 examples, yields up to 95%, dr values up to >20:1). Further experimental and electrochemical investigations indicated the crucial role of dynamic kinetic resolution of the aldol intermediate in the reaction mechanism.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Dhananjay S. Nipate, Neha Meena, Prakash N. Swami, Krishnan Rangan, Anil Kumar
Summary: In this study, the synthesis of functionalized benzo[a]phenazines and indazolo[2,3-a]quinolines was achieved through Rh(III)-catalyzed oxidative annulation of 2-arylquinoxalines and 2-aryl-2H-indazoles with allyl alcohols. The method showed a wide substrate scope, excellent functional group tolerance, good to high yields of annulated products, and the capability for scaled-up synthesis. A tentative mechanism of the annulation reaction was proposed based on a preliminary mechanistic investigation.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Ruonan Zhang, Abudukadi Tudi, Xia Yang, Xuping Wang, Zhihua Yang, Shujuan Han, Shilie Pan
Summary: A new lead tellurium borate material with a unique fundamental building block [B4O10] was synthesized and found to exhibit high birefringence. The structure-property relationship was discussed using first-principles calculations.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Amresh Kumar Singh, Baishali Thakurta, Anupam Giri, Monalisa Pal
Summary: This study introduces three key concepts for the quick synthesis of large-scale high-quality 2D materials films and their utilization in device fabrication.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Reina Hagiwara, Shun Nishimura, Kosuke Okeyoshi
Summary: A copolymer-conjugated nanocatalytic system has been developed to improve electron transfer and enhance photoinduced H2 generation.
CHEMICAL COMMUNICATIONS
(2024)
