Article
Chemistry, Physical
Yongjiu Zou, Jing Xu, Yunsheng Fang, Xun Zhao, Yihao Zhou, Jun Chen
Summary: The study introduces a portable hand-driven triboelectric nanogenerator that harvests energy from human biomechanical motions, providing a green power supply for wearable bioelectronics.
Review
Chemistry, Multidisciplinary
Hao Wang, Hari Krishna Bisoyi, Xinfang Zhang, Fathy Hassan, Quan Li
Summary: Inspired by human vision, visible light-driven molecular switches and motors have been developed to avoid the harmful effects of ultraviolet light. These compounds have been used in the development of functional materials and systems for various applications.
CHEMISTRY-A EUROPEAN JOURNAL
(2022)
Article
Engineering, Electrical & Electronic
Fouzi Mouffouk, Mohamed Emira, Mohammad H. BinSabt, Ali Husain, Abdullah Alhendal, Mohammed Zourob, Ahmed Meslam, Firas Awwadic
Summary: Researchers have developed a nanogenerator-based piezoelectric material that can efficiently harvest energy from the environment. This material utilizes a photosensitive molecular motor to convert light energy into mechanical stress, resulting in the generation of electrical current.
ACS APPLIED ELECTRONIC MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Masato Tamaoki, Daichi Kitagawa, Seiya Kobatake
Summary: The article discusses a rapidly photoresponsive behavior exhibited by photochromic diarylethene crystals, including peeling, jumping, and cracking, under different photoirradiation conditions. The study explores the details of the rapid photoresponsive peeling based on molecular packings and the crystal size. These crystals show potential applications as macroscopic photomechanical actuators driven by molecular machinery.
CRYSTAL GROWTH & DESIGN
(2021)
Article
Chemistry, Multidisciplinary
Alexis Perrot, Wen-zhi Wang, Eric Buhler, Emilie Moulin, Nicolas Giuseppone
Summary: The unidirectional rotation of chemically crosslinked light-driven molecular motors changes the swelling equilibrium of hydrogels progressively. The concentration of molecular motors and the initial strand density of the polymer network are crucial parameters for controlling the macroscopic contraction of the material, which can be adjusted by using polymer chains with different molecular weights. These findings led to the development of optimized hydrogels with a half-time contraction of approximately 5 min. Moreover, by harnessing the local contraction event under inhomogeneous stimulation, bending actuators with significantly higher energy output compared to previous self-assembled systems involving rotary motors were designed, allowing a single molecular motor to lift loads 200 times its own molecular weight.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Nanoscience & Nanotechnology
Xiaofei Wu, Raphael Ehehalt, Gary Razinskas, Thorsten Feichtner, Jin Qin, Bert Hecht
Summary: Researchers have successfully demonstrated the remote control of microscopic robots in two dimensions in all three degrees of freedom using unfocused light and plasmonic nanoantennas. This breakthrough has potential applications in transport, manipulation, and sensing of nano and mesoscale objects.
NATURE NANOTECHNOLOGY
(2022)
Review
Chemistry, Multidisciplinary
Chaolong Tang, Mehrdad Shiri, Haixin Zhang, Ridwan Tobi Ayinla, Kun Wang
Summary: In this article, the recent progress in investigating light-driven charge transport in molecular junctions (MJs) is surveyed. It includes junctions composed of a single molecule and self-assembled monolayers (SAMs) of molecules, as well as new opportunities in optical sensing at the single-molecule level. The focus is on experimental design, key phenomena, and the underlying mechanisms of light-assisted charge transport, photoswitch, and photoemission in MJs. The emerging Raman sensing in MJs is also discussed, along with the outstanding challenges and future perspectives in the field.
Article
Chemistry, Physical
Ferran Pujol-Vila, Pedro Escudero, Pau Guell-Grau, Carlos Pascual-Izarra, Rosa Villa, Mar Alvarez
Summary: This study demonstrates a mechanical imaging approach based on low-stiffness cantilevers, which can monitor and quantify molecular conformational changes with high sensitivity and spatial resolution, suitable for monitoring molecular changes.
Review
Chemistry, Multidisciplinary
Bin Yao, Hongfei Sun, Lin Yang, Song Wang, Xingyan Liu
Summary: This review summarizes the research progress, mechanisms, practical applications, and future development of light-driven molecular shuttles.
FRONTIERS IN CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Kengo Manabe, Koichiro Saito, Miki Nakano, Takuya Ohzono, Yasuo Norikane
Summary: This study demonstrates a light-driven system called a liquid conveyor, which can transport both water droplets and microsolids on the same surface. By incorporating a molecular motor with photoisomerization ability into the liquid layer, flow is induced by exposure to ultraviolet LED light, achieving horizontal transport in any direction.
Article
Nanoscience & Nanotechnology
Xiao-Fang Hou, Xu-Man Chen, Hari Krishna Bisoyi, Qi Qi, Tianchi Xu, Dongzhong Chen, Quan Li
Summary: Here we report light-activated convertible pseudorotaxanes (PRs) that can self-assemble and show tunable fluorescence, enabling deformable nano-assemblies. When exposed to light, a specific combination of molecules transform into a transient form, which can thermally relax to its original form in the dark, accompanied by periodic fluorescence changes. The self-assembly of these PRs leads to the formation of octahedral and spherical nanoparticles, which can be used for dynamic imaging of the Golgi apparatus.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Dong Wook Kim, Yuki Hagiwara, Shodai Hasebe, Nihal Olcay Dogan, Mingchao Zhang, Toru Asahi, Hideko Koshima, Metin Sitti
Summary: Research on light-driven molecular crystals has advanced with the development of different molecules and identification of driving mechanisms. However, most crystals are driven by UV or blue light, and the use of red or NIR light has not been explored yet. In this study, a broad-wavelength light-driven molecular crystal that exhibits high-speed bending through photothermal effect is developed by integrating MXene nanosheets into salicylideneaniline crystals.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Engineering, Biomedical
Zhiqiang Ni, Di Zhang, Shijie Zhen, Xiao Liang, Xiangjun Gong, Zujin Zhao, Dan Ding, Guangxue Feng, Ben Zhong Tang
Summary: This study introduces a new approach to enhance the photothermal effect using specially designed nanoparticles that generate higher heat by aggregation and temperature difference, leading to improved photothermal therapy.
Article
Multidisciplinary Sciences
Harvey L. Devereux, Colin R. Twomey, Matthew S. Turner, Shashi Thutupalli
Summary: The study on collective dynamics of whirligig beetles swimming on water surface revealed density-dependent speed scaling, inertial delay for velocity alignment, and coexisting high and low-density phases, consistent with motility-induced phase separation theory. By modifying a model, the researchers successfully explained the co-occurrence of high- and low-density phases observed in the data.
JOURNAL OF THE ROYAL SOCIETY INTERFACE
(2021)
Article
Chemistry, Multidisciplinary
Chul-Ho Yun, Jinhyun Kim, Frank Hollmann, Chan Beum Park
Summary: This article critically summarizes the current developments in photoredox biocatalysis, highlighting promising concepts and discussing current limitations.
Article
Chemistry, Multidisciplinary
Alexis Perrot, Wen-zhi Wang, Eric Buhler, Emilie Moulin, Nicolas Giuseppone
Summary: The unidirectional rotation of chemically crosslinked light-driven molecular motors changes the swelling equilibrium of hydrogels progressively. The concentration of molecular motors and the initial strand density of the polymer network are crucial parameters for controlling the macroscopic contraction of the material, which can be adjusted by using polymer chains with different molecular weights. These findings led to the development of optimized hydrogels with a half-time contraction of approximately 5 min. Moreover, by harnessing the local contraction event under inhomogeneous stimulation, bending actuators with significantly higher energy output compared to previous self-assembled systems involving rotary motors were designed, allowing a single molecular motor to lift loads 200 times its own molecular weight.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Multidisciplinary
Maximilian Maylander, Philipp Thielert, Theresia Quintes, Andreas Vargas Jentzsch, Sabine Richert
Summary: Recent research has found that photoexcited chromophore-radical systems have the potential to be new candidates for spin qubit materials, paving the way for practical applications in functional molecular devices.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Multidisciplinary
Maximilian Maylaender, Theresia Quintes, Michael Franz, Xavier Allonas, Andreas Vargas Jentzsch, Sabine Richert
Summary: Photogenerated organic triplet-doublet systems have attracted increasing attention in molecular spintronics due to their versatility and suitability for technological applications. The formation of chromophore triplet states and subsequent quartet states depends on the enhanced intersystem crossing (EISC) and exchange interaction J(TR). Factors influencing the EISC process and quartet state formation were studied using a series of BODIPY-nitroxide dyads, suggesting that dipolar interactions mediate triplet formation and the absolute magnitude of J(TR) affects quartet state formation.
Article
Chemistry, Physical
Ganesh Viswanatha-Pillai, Andreas Vargas-Jentzsch, Alain Carvalho, Guillaume Fleith, Odile Gavat, Emilie Moulin, Nicolas Giuseppone, Jean-Michel Guenet
Summary: In this paper, potentially-gelling binary systems were studied using DSC, X-ray, and electron microscopy to evaluate their gel status and the role of Hansen solubility parameter. The results showed the existence of one or more molecular compounds between the organogelator (TATA) and solvents, which was confirmed by X-ray data. The morphology analysis by TEM indicated the extent of physical cross-links, suggesting that some systems can be regarded as pseudo-gels.
Review
Chemistry, Multidisciplinary
Emilie Moulin, Christian C. Carmona-Vargas, Nicolas Giuseppone
Summary: Daisy chain architectures, with their unique structure and dynamics, have significant influence and potential in the research of artificial molecular machines and stimuli-responsive materials.
CHEMICAL SOCIETY REVIEWS
(2023)
Review
Chemistry, Multidisciplinary
Emilie Moulin, Christian C. Carmona-Vargas, Nicolas Giuseppone
Summary: Daisy chain architectures, a family of supramolecular and mechanically interlocked molecules, have significantly influenced the research on artificial molecular machines and have potential applications in various areas.
CHEMICAL SOCIETY REVIEWS
(2023)
Article
Chemistry, Multidisciplinary
Maximilian Maylaender, Kevin Kopp, Oliver Nolden, Michael Franz, Philipp Thielert, Andreas Vargas Jentzsch, Peter Gilch, Olav Schiemann, Sabine Richert
Summary: Photogenerated organic triplet-radical conjugates have been investigated for their potential applications in quantum information science. The study explores three perylene diimide (PDI) based chromophore-radical systems and confirms their suitability as spin qubit candidates through optical spectroscopy and transient electron paramagnetic resonance techniques. The results show that one of the combinations exhibits intense spin polarization even at room temperature and achieves considerably improved quartet state coherence times compared to previous systems.
Article
Polymer Science
Dominique Collin, Ganesh Viswanatha-Pillai, Andreas Vargas Jentzsch, Odile Gavat, Emilie Moulin, Nicolas Giuseppone, Jean-Michel Guenet
Summary: This study reports on the rheological properties of organic gels prepared from TATA and OPVOH molecules. It is found that TATA/PVC ternary gels generally exceed the Voigt upper limit, possibly due to a desolvation process occurring in PVC fibrils. Furthermore, the conducting properties strongly depend on the solvent type but are not significantly altered when PVC is present.
Article
Chemistry, Physical
Yao Xiao, Collin Dominique, Gavat Odile, Carvalho Alain, Moulin Emilie, Giuseppone Nicolas, Guenet Jean-Michel
Summary: The gelation properties of tri-aryl amine (TATA) in two isomers of dichlorobenzene, ortho-dichlorobenzene (o-DCB) and meta-dichlorobenzene (m-DCB), have been studied. The results show that both systems have different behaviors and can form molecular compounds. X-ray and electron microscopy observations reveal differences in morphology between the two gel systems. These findings are significant in understanding the role of the solvent.