Article
Engineering, Electrical & Electronic
Nilabja Maity, Manoj Kumar Sharma, Samrat Ghosh, Mathias K. Huss-Hansen, Ahin Roy, Ravishankar Narayanan, Matti Knaapila, Wakana Matsuda, Shu Seki, Satish Patil
Summary: The oscillation of chemical bonds in molecular semiconductors plays a key role in disrupting electric conducting pathways. This study focuses on utilizing noncovalent interactions to enhance or tune the photoconductivity and charge transport properties in diketopyrrolopyrrole-based supramolecular assembled systems. The findings demonstrate the efficacy of supramolecular self-assembly strategy via hydrogen bonding networks in reducing structural defects and improving the performance in optoelectronic devices.
ACS APPLIED ELECTRONIC MATERIALS
(2023)
Review
Chemistry, Inorganic & Nuclear
Aiping Gao, Qingqing Wang, Huijuan Wu, Jun-Wei Zhao, Xinhua Cao
Summary: This review summarizes the recent progress of supramolecular gels based on cyanostilbene derivatives, including their applications in the regulation of self-assembly process and emission behavior, multifunctional sensors, photoresponsive materials, circularly polarized luminescence, and biological fields. The future development of cyanostilbene-based supramolecular self-assembly materials is also discussed.
COORDINATION CHEMISTRY REVIEWS
(2022)
Article
Chemistry, Multidisciplinary
Lieqiang Liao, Xinjian Jia, Haoxiang Lou, Jinlian Zhong, Huijin Liu, Shunming Ding, Chao Chen, Sanguo Hong, Xuzhong Luo
Summary: Supramolecular self-assembly, a significant method in designing functional soft materials with various nanostructures, was studied using a low-molecular-weight gelator PDA-N4, which formed supramolecular gels in mixed solvents of water and DMSO. The gel displayed solid-like behavior, pH- and thermo-reversible characteristics, and solution-gel-crystal transition. Intermolecular hydrogen bonding and pi-pi stacking interactions played key roles in gel formation, which showed potential biological applications in tissue engineering and controlled drug release.
Article
Chemistry, Multidisciplinary
Haijuan Zhang, Zejiao Shi, Laigui Hu, Yuan-Yuan Tang, Zhengyuan Qin, Wei-Qiang Liao, Zi Shuai Wang, Jiajun Qin, Xiaoguo Li, Haoliang Wang, Meenakshi Gusain, Fengcai Liu, Yiyi Pan, Mingsheng Xu, Jiao Wang, Ran Liu, Chunfeng Zhang, Ren-Gen Xiong, Wei E. I. Sha, Yiqiang Zhan
Summary: Ferroelectricity has been found to be a promising attribute for harvesting solar energy in solar cell devices by influencing associated device parameters. By combining state-of-art light absorption and electric transport properties with ferroelectricity, researchers have achieved significant improvements in solar cell efficiency. The incorporation of 1D ferroelectric perovskite with 3D organic-inorganic hybrid perovskite has shown enhanced performance in solar cell devices.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Jiarui Fu, Ziyan He, Eduardo Schott, Honghan Fei, Min Tu, Yi-nan Wu
Summary: The evolution of a model MOF gel, UiO-66(Zr) gel, is explored by demonstrating its sequential sol-gel self-assembly and nonclassical gel-crystal transformation. The control of the sol-gel process enables the observation and characterization of structures in each assembly stage and facilitates the preparation of hierarchical materials with giant mesopores. The nonclassical gel-crystal transformation sheds light on crystal intermediates and distinct crystallization motions.
Article
Chemistry, Organic
Gabriel Martinez, Nelson Ricardo Avila-Rovelo, Christian C. Carmona-Vargas, Imrane Id-boubrik, Amparo Ruiz-Carretero
Summary: DPP derivatives with thiophene capping rings are widely used as semiconductors in organic electronics, and their optoelectronic properties can be adjusted through different strategies. Incorporating hydrogen-bonding units into DPPs has been shown to improve the performance and morphology of organic solar cells. Modifying the thiophene capping units with hydrogen-bonding groups is a challenging synthetic task, but can yield exciting results.
EUROPEAN JOURNAL OF ORGANIC CHEMISTRY
(2023)
Article
Chemistry, Physical
Kerba S. More, Harshad A. Mirgane, S. Shyam Shankar, Nirmala Niharika Bhuyan, Amaresh Mishra, Sheshanath V. Bhosale, Ganesh D. Shrama
Summary: Two coumarin-functionalized DPP derivatives, DPP-Cou and Cou-DPP-Cou, were designed, synthesized, and characterized. The absorption range of the symmetrical Cou-DPP-Cou was extended to 750 nm (E(g)(opt) = 1.67 eV), compared to 700 nm (E(g)(opt) = 1.78 eV) for the asymmetric DPP-Cou. The symmetrical conjugates also showed higher thermal stability and achieved higher power conversion efficiencies (PCE) in organic solar cells due to appropriate morphology for faster charge extraction and lower charge recombination.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Energy & Fuels
Jingjing Ji, Jiaqi Xie, Junhui Tang, Kaibo Zheng, Ziqi Liang
Summary: A series of halogen-free polymer donors linking BDT moiety with highly electron-deficient BDD and DPP units have been developed, leading to improved efficiency in organic solar cells. By carefully controlling the molar ratios of BDD and DPP units in the optimal blend system, a remarkable power conversion efficiency was achieved, which was further enhanced by adding PC71BM to generate finer phase-separated domains. The critical roles of PC71BM in enhancing the efficiency were determined through transient absorption measurements on thin-film and in situ devices.
Article
Nanoscience & Nanotechnology
Jian Kong, Kaixiang Liang, Wenying Shi, Chao Lu
Summary: In this study, a small molecule was designed as a binder using supramolecular assembly technology to simultaneously passivate defects and promote carrier transport in perovskite materials. The all-air processed carbon-based solar cells achieved a decent power conversion efficiency of 14.17%, breaking through the insulating nature of organic molecules in long-term defect passivation. This finding provides novel design ideas to improve the performance of solar cells.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Nanoscience & Nanotechnology
Lifei Xu, Mingming Zhang, Xuefeng Zhu, Chenlu Xue, Han-Xiao Wang, Minghua Liu
Summary: This study found that amphiphiles self-assembled into different chiral nanomaterials in different solvents, showing opposite handedness and modulation of energy transfer efficiency.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Review
Chemistry, Inorganic & Nuclear
Martina Lippi, Massimo Cametti
Summary: This article highlights the main advances in using one-dimensional coordination polymers for adsorption and separation purposes, focusing on larger guest molecules and charged dyes or ions. In most cases, the adsorption processes induce significant structural changes in the CPs framework, as shown by extensive X-ray characterization. The dynamic properties of these compounds in responding to external chemical stimuli are inherent in their structural features, composed of chain-like arrays held together by weak inter-chain interactions.
COORDINATION CHEMISTRY REVIEWS
(2021)
Article
Multidisciplinary Sciences
Ming Liu, Yi-Rong Wang, Hui -Min Ding, Meng Lu, Guang-Kuo Gao, Long-Zhang Dong, Qi Li, Yifa Chen, Shun-Li Li, Ya-Qian Lan
Summary: This study presents the design of selective and efficient COFs-based electrocatalysts with tunable morphology for efficient CO2 reduction reaction (CO2RR) to CH4. By introducing a specific reaction, COFs with tunable morphology were produced, demonstrating the importance of these superstructures for efficient CO2RR. The obtained COF-based superstructures showed superior performance in electrocatalytic CO2RR, providing a general methodology for exploring morphology-controlled COFs.
Article
Chemistry, Multidisciplinary
Mitsuaki Yamauchi, Seiya Yamamoto, Sadahiro Masuo
Summary: The study demonstrates a novel supramolecular coassembly system that forms highly ordered QD arrangement structures via self-assembly, enabling photocontrollable photoluminescence properties. The assembled system undergoes structural changes under light, but recovers its original structure and properties over time.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Physical
Aoli Wu, Yongxian Guo, Xianbao Li, Qi Li, Guixin Chen, Hengchang Zang, Junbai Li
Summary: The development of peptide-based supramolecular materials with hierarchical morphology and tunable guest loading shows great potential as a drug carrier due to their biocompatibility and biodegradability. In this study, a facile Schiff base nanoarchitectonic was reported for the supramolecular assembly of diphenylalanine (FF) metastable gel. The competitive assembly between FF-H2O and FF-GA oligomer resulted in the formation of FF nanoparticles and hierarchical beaded nanofibers. These assembled particles can easily load various guest molecules and release them under weak alkaline conditions, demonstrating their potential application as drug carriers.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Review
Chemistry, Multidisciplinary
Lu Yang, Xiaoxue Huang, Suna Wang, Daopeng Zhang, Zhen Zhou
Summary: Supramolecular chemistry has become an interdisciplinary discipline which includes chemistry, physics, and biology. Metal-organic molecular containers (MOMCs) have received considerable attention due to their rich chemical properties and wide potential applications. In this paper, selected examples of coordination-driven metal-organic supramolecular systems are reviewed, focusing on self-assembly construction and various applications. The different choice of organic ligands with flexible backbones during construction leads to diverse configurations compared to rigid ligands, providing a different perspective on metal-organic system construction.
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
V. Murugesh, Patlolla Ravinder Reddy, Surya Prakash Singh
Summary: A photocatalyst-free, visible-light promoted method for direct conversion of C(sp(2))-H to C(sp(2))-N is presented in this study. Multipurpose benzothiadiazoles are employed as model synthons and secondary amines as aminating agents. Mechanistic study reveals that the radical reaction proceeds through nitrogen-centered radical generation, followed by addition of arenes, enabling an economically efficient amination protocol for benzothiadiazole with secondary amines.
CHEMICAL COMMUNICATIONS
(2023)
Article
Nanoscience & Nanotechnology
Priyanka Choudhary, Kamlesh Kumari, Devendra Sharma, Sahil Kumar, Venkata Krishnan
Summary: A metal-free methodology using boron nitride (BN) nano-sheets functionalized with hydroxyl groups (BN-OH) has been developed for the synthesis of phenols from arylboronic acids. The hydroxyl groups on the BN nanosheets serve as active sites for the hydroxylation reaction. The optimized reaction parameters and the use of water as solvent contribute to high catalytic efficiency and eliminate the need for toxic solvents.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Energy & Fuels
Tripti Chhabra, Venkata Krishnan
Summary: This study reports the development of sulfonic acid functionalized niobium pentoxide (Nb2O5) for the synthesis of high dense carbon biofuel precursors from low dense biomass derivatives. The catalysts used are a combination of Lewis acid catalyst, niobium pentoxide, and sulfonic acid functionalized catalyst (S-Nb2O5). The most effective catalyst, S3-Nb2O5, shows a maximum yield of 87% for C-15 product at relatively low temperature (50 degrees C) under neat conditions.
Article
Chemistry, Physical
P. Nagarjuna, Vinay Gupta, Anirban Bagui, Surya Prakash Singh
Summary: Two molecularly engineered fullerene-based electron acceptors, BITh-C60 and BITh-C70, were synthesized and characterized. BITh-C70 showed stronger absorption and higher power conversion efficiency (PCE) compared to BITh-C60. The BHJ solar cell based on PffBT4T-2OD:BITh-C70 exhibited a flat EQE spectra of 75% from 380 to 700 nm.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2023)
Review
Chemistry, Multidisciplinary
Swati Panda, Sugato Hajra, Yumi Oh, Wonjeong Oh, Jeonghyeon Lee, Hyoju Shin, Venkateswaran Vivekananthan, Ya Yang, Yogendra Kumar Mishra, Hoe Joon Kim
Summary: The ocean is a vast potential source of renewable energy, but low-frequency and high-amplitude stimulation has made harnessing its power challenging. Hybrid nanogenerators (HNGs) offer a promising solution by efficiently converting ocean energy into usable power. With their high sensitivity and flexible design, HNGs are ideal for low-frequency environments and remote ocean regions. By combining triboelectric nanogenerators (TENGs), piezoelectric nanogenerators (PENGs), and electromagnetic nanogenerators (EMGs), a unique hybrid system is created that maximizes energy harvesting.
Article
Engineering, Environmental
Priyanka Choudhary, Shivangi Singh Chauhan, Devendra Sharma, Sahil Kumar, Venkata Krishnan
Summary: This work reports a sustainable method for the synthesis of aromatic nitriles using metal-free heterogenous catalysts. A sulfonated boron nitride (S-BN) catalyst was used to achieve high yields of nitriles from aromatic alcohols and aqueous ammonia under mild conditions. The catalyst was prepared by exfoliation and sulfonation of low cost hexagonal boron nitride, resulting in the generation of active centers. The reaction showed excellent yields and high green metric parameters.
CHEMICAL ENGINEERING JOURNAL
(2023)
Review
Chemistry, Physical
S. Divya, Sugato Hajra, Swati Panda, Venkateswaran Vivekananthan, Krystian Mistewicz, Hoe Joon Kim, Tae Hwan Oh
Summary: Despite the need for more effective wound healing solutions, electrical stimulation therapy using triboelectric nanogenerators (TENG) remains underutilized in clinical practice. However, the rise of wearable technology has provided renewed attention to TENG-based wound healing. By converting mechanical energy into electricity, TENG offers potential as an alternative power source for self-powered healthcare applications. This review highlights the progress and challenges of TENG in wound healing, emphasizing the need for addressing downsizing, encapsulation, and stable performance before medical trials can begin.
CHEMICAL PHYSICS LETTERS
(2023)
Article
Chemistry, Physical
Sameer Mohanty, Manisha Sharma, Ajay Kumar, Venkata Krishnan
Summary: Sunlight, as the most abundant and cleanest form of energy, has great potential in photocatalysis. In this study, multi-component interfacial heterostructures were developed and utilized for photocatalytic reactions under natural sunlight, demonstrating remarkable performance.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Materials Science, Multidisciplinary
Jhelai Sahadevan, R. Sanjay, S. Esakki Muthu, Ikhyun Kim, Venkateswaran Vivekananthan, Sabah Ansar, P. Sivaprakash
Summary: The structural characteristics and magnetic property of polycrystalline BaCoO3 perovskite oxide were studied. The ceramics were synthesized using a solvothermal method. XRD, SEM, and XPS experiments were conducted to examine the crystal structures, microstructures, and surface chemical state properties. The results showed that the samples had a hexagonal crystal structure and exhibited ferromagnetic properties.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
S. Munusamy, Raja Venkatesan, S. Divya, G. Gnanamoorthy, V. Narayanan, Venkateswaran Vivekananthan, Sabah Ansar, Tae-Hwan Oh, Seong-Cheol Kim
Summary: This article investigates the catalytic function of polypyrrole (PPy) hybrids with In2O3 nanoparticles and synthesizes 20 nm crystalline particles. The In2O3-PPy nanohybrid electrode exhibits electrocatalytic oxidation towards Mebendazole (MBZ) in a concentration range of 3·10-7 - 9·10-8 M. The electrode shows good sensitivity and detection limits, making it suitable for detecting anti-helthiminic drugs like MBZ in liquid samples.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2023)
Review
Chemistry, Multidisciplinary
Rakesh Kumar Rajaboina, Uday Kumar Khanapuram, Venkateswaran Vivekananthan, Gaurav Khandelwal, Supraja Potu, Anjaly Babu, Navaneeth Madathil, Mahesh Velpula, Prakash Kodali
Summary: Nanogenerators (NGs) are a potential technology for self-powered systems and portable electronics in the Internet of Things generation. They convert mechanical motion into electrical signals and have evolved since their discovery in 2006 and 2012. Crystalline porous materials (CPMs) such as metal-organic frameworks (MOFs) and covalent organic frameworks (COFs) have been widely studied as efficient material options for NGs due to their special properties.
Article
Chemistry, Physical
Sugato Hajra, Swati Panda, Hamideh Khanberh, Venkateswaran Vivekananthan, Elham Chamanehpour, Yogendra Kumar Mishra, Hoe Joon Kim
Summary: Triboelectric nanogenerators (TENGs) have the potential to revolutionize self-powered robotic systems by offering self-powered actuation, grasping, and sensing capabilities. TENGs directly convert mechanical energy into electrical energy, powering small electronics. This review explores the mechanisms and modes of TENGs for robotics actuation and sensing applications, discussing improvements in efficiency and reliability, grippers with controlled gripping power and self-calibration abilities, pressure sensors incorporated into robotic grippers, and the integration of self-powered robotic systems with human-machine interaction (HMI) technologies.
Review
Chemistry, Multidisciplinary
Ajay Kumar, Priyanka Choudhary, Tripti Chhabra, Harpreet Kaur, Ashish Kumar, Mohammad Qamar, Venkata Krishnan
Summary: The rational design and development of highly efficient and stable photocatalysts is a major focus in the field of photocatalysis. This review article provides a critical comprehensive overview of the development of plasmon mediated GCN based photocatalysts and summarizes the recent progress in the field of energy conversion, environmental remediation, and organic transformations. It also discusses the challenges associated with stability, low light absorption, and fast recombination of charge carriers, and introduces the use of GCN coupled with plasmonic materials to enhance photocatalytic activity.
MATERIALS CHEMISTRY FRONTIERS
(2023)
Article
Nanoscience & Nanotechnology
Manisha Sharma, Ashish Kumar, Deepika Gill, Shilpi Jaiswal, Abhijit Patra, Saswata Bhattacharya, Venkata Krishnan
Summary: In this study, W-doped Bi2MoO6 nanosheets were synthesized and demonstrated their potential as efficient photocatalysts for the simultaneous production of NH3 and NO3- ions under visible light irradiation. The optimal molar ratio of doped tungsten showed the best photocatalytic NH3 production without using any sacrificial agents. The enhanced photocatalytic activity of the synthesized photocatalysts could be attributed to oxygen vacancy defects caused by Mo substitution by a more electronegative W atom.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Energy & Fuels
Hushan Chand, Ajay Kumar, Subhadip Goswami, Venkata Krishnan
Summary: This study investigates the catalytic activity of graphitic carbon nitride (GCN) derived from different precursors in the CO2 conversion reaction. The results show that GCN derived from urea demonstrates the best catalytic activity and product yield. Exfoliated GCN samples exhibit a moderate decrease in catalytic activity, possibly due to a decrease in terminal amino groups.
