Article
Chemistry, Applied
Junwu Chen, Honghong Wang, Xiaojing Fan, Shanfeng Xue, Qikun Sun, Wenjun Yang
Summary: The chemical and physical functions of organic molecules are influenced by their conformations in solutions and solid states. However, the separation of organic conformers is usually difficult due to rapid internal rotation of single bonds. In this study, we demonstrate two stable and separable conformers with swivel cross-conjugated configuration based on 9,10-diphenylanthracene derivatives, and their stability is enhanced by introducing bulky groups. These conformers exhibit similar solution properties but different solid-state optical properties, and only the syn conformer shows mechanochromic luminescence and mechanoluminescence.
Review
Chemistry, Physical
Andrea Fiorani, Marinella Difonzo, Fabio Rizzo, Giovanni Valenti
Summary: Polycyclic aromatic hydrocarbons were the first molecules investigated in electrochemiluminescence (ECL) studies, but the focus shifted to soluble inorganic complexes when analytical applications moved from organic solvents to water-based solutions. However, recent advancements in synthetic procedures and concepts have revived the investigation of organic molecules. Polymeric nanoparticles and thermally activated delayed fluorescence (TADF) have sparked renewed interest in organic emitters.
CURRENT OPINION IN ELECTROCHEMISTRY
(2022)
Article
Chemistry, Analytical
Xinya Jiang, Huijun Wang, Yue Shen, Nana Hu, Wenbing Shi
Summary: A new type of N-Ti3C2 QDs with excellent ECL performance and higher quantum efficiency than Ti3C2 QDs were discovered, which could be used to construct an ECL immunosensor for sensitive detection of MUC1 with a low detection limit of 0.31 fg mL(-1). The ECL signal of the immunosensor could be enhanced due to the efficient ECL reaction promoted by N-Ti3C2 QDs towards co-reactant S2O82-, showing promising potential for ECL development in biological analysis.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Biophysics
Zhuoxin Ye, Yibing Liu, Meichen Pan, Xiuli Tao, Yuxuan Chen, Pinyi Ma, Ying Zhuo, Daqian Song
Summary: In this study, low-toxic quaternary AgInZnS quantum dots were synthesized and used as novel anodic electrochemiluminescence (ECL) emitters. These QDs exhibited strong and stable ECL emission, a low excitation potential, and high ECL efficiency. An on-off-on ECL biosensor for detecting microRNA-141 was designed based on a dual isothermal enzyme-free strand displacement reaction, achieving cyclic amplification of the target and ECL signal, as well as a switch function. The ECL biosensor showed a wide linear range and low detection limit, making it a promising tool for rapid and accurate diagnosis of clinical diseases.
BIOSENSORS & BIOELECTRONICS
(2023)
Article
Chemistry, Physical
Jinwoo Park, Kyung Yeon Jang, Song Hee Lee, Dong-Hyeok Kim, So-Hye Cho, Tae-Woo Lee
Summary: CsPbBr3 PeNCs were synthesized using perhydropolysilazane (PSZ) and encapsulated in a SiO2 matrix, resulting in chemically stable PeNC-PSZ composites with high photoluminescence quantum yield (PLQY) of 84.7% and long-term stability even in water.
CHEMISTRY OF MATERIALS
(2023)
Article
Multidisciplinary Sciences
Alexander Ulanowski, Benjamin Merkel, Andreas Reiserer
Summary: In a quantum network, coherent emitters can be entangled over large distances using photonic channels. By utilizing nano-photonic structures and a Fabry-Perot resonator, researchers have enhanced photon emission and demonstrated high spectral stability. The study provides important insights into achieving frequency-multiplexed quantum-network nodes.
Article
Nanoscience & Nanotechnology
Luca Leonforte, Davide Valenti, Bernardo Spagnolo, Angelo Carollo, Francesco Ciccarello
Summary: The paper introduces a compact formulation of the resolvent-based theory for calculating atom-photon dressed states, establishing a connection with the standard impurity problem in condensed matter and solving many previously unspecified properties. It also extends the framework to multiple emitters, deriving a general expression of dissipationless effective Hamiltonians explicitly featuring the overlap of single-emitter dressed bound states.
Review
Engineering, Environmental
Jyotsana Mehta, Neeraj Dilbaghi, Nitin Kumar Singhal, Giovanna Marrazza, Ajeet Kaushik, Sandeep Kumar
Summary: This review summarizes the recent advancements in electrochemiluminescent sensors based on quantum dots (QDs), highlighting their structural properties, modification methods, and roles in signal detection and specific targeting.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Analytical
Jin-Ling Zhang, Yang Yang, Wen-Bin Liang, Li-Ying Yao, Ruo Yuan, Dong-Rong Xiao
Summary: A novel pyrene-based sp(2) carbon-conjugated covalent organic framework nanosheet was constructed, exhibiting strong and stable electrochemiluminescence emission for the first time. The Py-sp(2)c-CON showed higher ECL intensity and efficiency compared to other materials, and when combined with Bu4NPF6, the ECL signal was further amplified, allowing for the detection of microRNA-21 with broad linear response range and low detection limit. Overall, this work demonstrates the potential of sp(2) carbon COFs as high-performance ECL emitters with expanded applications in biosensing.
ANALYTICAL CHEMISTRY
(2021)
Article
Biochemistry & Molecular Biology
Chitra Padmakumari Kurup, Syazana Abdullah Lim, Minhaz Uddin Ahmed
Summary: This paper provides a comprehensive review of electrochemiluminescent (ECL) nanomaterial-based aptasensors, including their challenges and applications. The incorporation of nanomaterials for signal amplification is highlighted, and various nanomaterials such as gold nanoparticles, metal nanoparticles, metal oxides, carbon nanomaterials, metal organic frameworks, and quantum dots are discussed. The review also presents relevant concepts and explanations for the design of ECL aptasensors and discusses the underlying problems and possibilities for future research and development in this field.
BIOELECTROCHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Yi Xing, Zhongyu Li, Glib V. Baryshnikov, Shen Shen, Danfeng Ye, Hans Agren, Liangliang Zhu
Summary: In this study, a selective dual polarization of D-A molecules was achieved by introducing water-based molecular bridges in their crystal structures, leading to an amplification of the molecular dipole moment and enabling multi-excitation and multi-emission characteristics in the crystals. This work provides a practical chemical approach for developing intrinsically polarized systems that can exhibit stable but distinct molecular photophysical properties.
Article
Chemistry, Multidisciplinary
Shazia Hasan, Abdul Rauf
Summary: The study presents a facile chemical synthesis route to obtain Ag@Ag2O core-shell nanostructures coated with 9,10-dibromooctadecanoic acid, which enhances the stability and shelf life of the nanoparticles. The nanostructures demonstrated high degradation efficiency towards water toxins, suggesting a cost-effective method for purifying wastewater from organic and inorganic toxicity.
NEW JOURNAL OF CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Chokchai Kaiyasuan, Pongsakorn Chasing, Phattananawee Nalaoh, Praweena Wongkaew, Taweesak Sudyoadsuk, Kanokwan Kongpatpanich, Vinich Promarak
Summary: Two deep-blue emissive molecules (SAF-PI and SAF-DPI) designed and synthesized with twisted D-A and A-D-A structures exhibit hybridized local excited and charge transfer characteristics, suitable for use as non-doped emitters in OLEDs. SAF-PI, in particular, achieves high-definition television standard blue emission with peak wavelength at 428 nm and excellent external quantum efficiency.
CHEMISTRY-AN ASIAN JOURNAL
(2021)
Review
Chemistry, Physical
Milica Sentic, Ivana Trajkovic, Dragan Manojlovic, Dalibor Stankovic, Maria Vesna Nikolic, Neso Sojic, Jasmina Vidic
Summary: This review presents the application of metal-organic frameworks (MOFs) in electrochemiluminescent (ECL) sensing for water pollutant detection. MOF composites enable the sensitive monitoring of common emerging contaminants such as heavy metals, volatile organic compounds, pharmaceuticals, industrial chemicals, and cyanotoxins.
Article
Nanoscience & Nanotechnology
Seonjeong Lee, Won Seok Cho, Jae Yong Park, Han Ju Lee, Jong-Lam Lee, Keun Hyung Lee, Kihyon Hong
Summary: This study demonstrates a new concept of device architecture for fabricating fibrous light-emitting devices using an electrochemiluminescence (ECL) material. Instead of conventional semiconductor materials, a solid-state ECL electrolyte gel is employed as the light-emitting layer. The resulting fiber devices show reliable operation and outstanding water resistance. The simple structure of these fiber devices also allows them to easily be woven together with commercial knitwear.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Multidisciplinary
Isa Valiyev, Amit Ghosh, Indrajit Paul, Michael Schmittel
Summary: This study investigates the treatment process of a crown-ether receptor and a silver(I)-loaded cyclam derivative, uncovering the different catalytic reactions triggered under different states.
CHEMICAL COMMUNICATIONS
(2022)
Article
History & Philosophy Of Science
Andrzej Bielecki, Michael Schmittel
Summary: Theoretical frames for analyzing information in biological and molecular multicomponent structures are proposed. The mathematical foundations of the proposal are presented. Both the information encoded in structures is defined and the method of calculating the amount of this information is introduced. The proposed approach is applied to the operation of a molecular multicomponent machine.
FOUNDATIONS OF SCIENCE
(2022)
Article
Chemistry, Organic
Debabrata Mondal, Amit Ghosh, Indrajit Paul, Michael Schmittel
Summary: In this study, the catalytic activity was turned on or off by releasing DABCO-H+ in State-I and generating a highly dynamic State-II, through changing the acidity in the system.
Article
Chemistry, Physical
Lukas Grossmann, David A. Duncan, Samuel P. Jarvis, Robert G. Jones, Soumen De, Johanna Rosen, Michael Schmittel, Wolfgang M. Heckl, Jonas Bjork, Markus Lackinger
Summary: NIXSW analysis allows precise measurement of adsorption heights, providing new perspectives on surface interactions and molecular conformations. The study of porous covalent triazine-phenylene networks on Ag(111) reveals the evolution of molecular conformations and adsorption heights during on-surface synthesis and post-synthetic decoupling.
NANOSCALE HORIZONS
(2022)
Review
Chemistry, Organic
Prodip Howlader, Michael Schmittel
Summary: Current trend in supramolecular catalysis focuses on exploring heteroleptic aggregates composed of different components to achieve higher functional diversity and structural heterogeneity. This trend not only extends into the fields of systems chemistry and information science, but also provides more detailed and refined configuration plans.
BEILSTEIN JOURNAL OF ORGANIC CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Sohom Kundu, Amit Ghosh, Indrajit Paul, Michael Schmittel
Summary: A multicomponent pseudorotaxane quadrilateral was reversibly toggled between three distinct switching states. Switching in the forward and reverse directions was achieved by adding specific ions or compounds, triggering different chemical reactions.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Chemistry, Multidisciplinary
Vishnu Verman Rajasekaran, Amit Ghosh, Sohom Kundu, Debabrata Mondal, Thomas Paululat, Michael Schmittel
Summary: The heteroleptic multi-component double slider-on-deck system DS3 demonstrates a tight coupling of the motional speed of two distinct nano-circular sliders, despite a 2.2 nm separation. Synchronization of the motions in DS3 remains even when the faster slider is slowed down using small molecular brake pads. In contrast to the individual DS1 and DS2 systems, DS3 utilizes the motion of both sliders to drive two catalytic processes.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Physical
Arash Badami-Behjat, Peter S. Deimel, Francesco Allegretti, Eva Ringel, Kingsuk Mahata, Michael Schmittel, Johannes V. Barth, Wolfgang M. Heckl, Markus Lackinger
Summary: The self-assembly of supramolecular monolayers at liquid-solid interfaces is a well-established research field. In this study, a passivated Au(111) surface with a monolayer of iodine atoms was used to explore the effects of the underlying surface on interfacial monolayers. The experiments revealed that molecule-surface interactions can cause substrate-induced polymorphism and significantly affect the thermodynamic stability of supramolecular monolayers. This study highlights the crucial and specific thermodynamic influence of the underlying surface on monolayer formation.
CHEMISTRY OF MATERIALS
(2022)
Article
Chemistry, Organic
Debabrata Mondal, Sohom Kundu, Emad Elramadi, Isa Valiyev, Michael Schmittel
Summary: We demonstrated the self-healing of a molecular machine's shuttling dynamics through negative feedback. Addition of zinc(II) to the copper(I)-loaded [2]rotaxane shuttle [Cu(R)](+) led to the replacement of copper(I) with static zinc(II)-loaded [2]rotaxane [Zn(R)](2+). Loss of dynamics was accompanied by fluorescence enhancement at lambda = 364 nm. However, the released copper(I) ions catalyzed the formation of a bis-triazole ligand, which selectively captured zinc(II), resulting in the restoration of copper(I) in the rotaxane and the regained dynamic shuttling motion of [Cu(R)](+). The healing process was conveniently monitored through diagnostic fluorescence changes.
Article
Chemistry, Multidisciplinary
Vishnu Verman Rajasekaran, Sohom Kundu, Debabrata Mondal, Michael Schmittel
Summary: This article describes a three-component molecular ensemble composed of a constitutionally dynamic cage 1, rotaxane 2, and luminophore 3, which functions as a signal transducer to assimilate and process three input signals, namely Zn2+, H+, and Cu+. It performs various logic operations (e.g., a 3-input NOR gate with catalytic output, 3-input AND gate with optical output) and operates as an unconventional 3-input demultiplexer.
Article
Chemistry, Multidisciplinary
Emad Elramadi, Sohom Kundu, Debabrata Mondal, Michael Schmittel
Summary: When the basic ligand 3 was added to the heteroleptic three-component slider-on-deck [Ag-3(1)(2)](3+), it acted as a moderate brake pad (k(298) = 45 kHz). The resulting motion in the four-component slider-on-deck [Ag-3(1)(2)(3)](3+) allowed both ligand 3 and silver(i) to be continuously exposed and become catalytically active in a tandem Michael addition/hydroalkoxylation.
CHEMICAL COMMUNICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Vishnu Verman Rajasekaran, Emad Elramadi, Isa Valiyev, Prodip Howlader, Michael Schmittel
Summary: We demonstrate the locomotion capabilities of a biped on a tetrahedral track using chemical fuel, cooperative binding, and kinetic selectivity. The biped's movement is enabled by the binding of its dibenzyl amine feet to zinc porphyrin units and the subsequent protonation and binding to dibenzo 24-crown-8 sites, forming pseudorotaxane linkages.
CHEMICAL COMMUNICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Sohom Kundu, Isa Valiyev, Debabrata Mondal, Vishnu Verman Rajasekaran, Abir Goswami, Michael Schmittel
Summary: A three-component network for OFF/ON catalysis was constructed, utilizing a protonated nanoswitch and a luminophore. The addition of silver(i) activated the network, leading to the proton-catalyzed formation of a biped structure and the assembly of a fast slider-on-deck (k(298) = 540 kHz).
Article
Chemistry, Multidisciplinary
Suchismita Saha, Sohom Kundu, Pronay Kumar Biswas, Michael Bolte, Michael Schmittel
Summary: The HETPYNE and DABCO & BULL interactions were used to assemble the nanorotor ROT-1, which exhibited a highly dynamic alkyne & RARR; copper(i) dissociation. Quantitative click reaction transformed ROT-1 into the new rotor ROT-2 with a triazole & RARR; copper(i) linkage, opening perspectives for bioorthogonal click strategies to biohybrid machinery.
CHEMICAL COMMUNICATIONS
(2022)
Article
Chemistry, Multidisciplinary
Emad Elramadi, Amit Ghosh, Isa Valiyev, Pronay Kumar Biswas, Thomas Paululat, Michael Schmittel
Summary: This article investigates three 3-component copper(i)-based slider-on-deck systems that act as catalysts for a click reaction. The catalysts show higher activity with increasing sliding speed. The addition of brake stones slows down and eventually stops the motion of the resulting 4-component machinery, reducing or obstructing catalysis.
CHEMICAL COMMUNICATIONS
(2022)
