Article
Chemistry, Applied
Haoran Zhou, Jung-Min Ji, Hwan Kyu Kim
Summary: Two porphyrin-based sensitizers, SGT-028 and SGT-029, were designed and synthesized via acceptor engineering for application in dye-sensitized solar cells (DSSCs). Despite similar absorption range and energy band gap to the reference dye SGT-021, SGT-029 achieved a higher power conversion efficiency (PCE) of 10.5% compared to SGT-028 with 9.1%, but was inferior to the benchmark porphyrin sensitizer SGT-021 (12.7%).
Article
Chemistry, Applied
Shengzhong Li, Shuangyu Zhang, Shu Mei, Xiangfei Kong, Miao Yang, Wenjun Wu, Shuhua Zhang, Haijun Tan
Summary: The novel porphyrin dye T-2 with phenoxazine (POZ) as the donor unit showed significantly higher performance in dyesensitized solar cells compared to T-1. The butterfly-shaped structure and extra alkyl chain of POZ were identified as the main reasons for the improved efficiency observed in the T-2-based device.
Review
Chemistry, Multidisciplinary
Zhemin Li, Qizhao Li, Chengjie Li, Yongshu Xie
Summary: Dye-sensitized solar cells (DSSCs) have the advantages of environmental friendliness, easy fabrication, and rich colors, making them promising for applications in architectural decoration and power supply for low energy devices. However, porphyrin dyes used in DSSCs still suffer from absorption defects and aggregation tendencies. In order to address these issues, various approaches have been developed to achieve panchromatic absorption and high efficiency.
MATERIALS CHEMISTRY FRONTIERS
(2023)
Article
Chemistry, Multidisciplinary
Ha Lim Cha, Seungyoon Seok, Hyun Jo Kim, Suresh Thogiti, Burragoni Sravanthi Goud, Gyuho Shin, Lee Ji Eun, Ganesh Koyyada, Jae Hong Kim
Summary: A new DSSC strategy using multiple dyes for full spectrum absorption was developed, with CO-DACE devices showing the highest efficiency compared to traditional DSSCs. This is attributed to enhanced IPCE and J(sc), highlighting the advantage of DACE electrode in maximizing incident light utilization.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2021)
Article
Chemistry, Physical
Sina Wrede, Lanlan He, Gerrit Boschloo, Leif Hammarstrom, Lars Kloo, Haining Tian
Summary: To gain a deeper understanding of charge processes in dye-sensitized photocathodes, lateral electron hopping across dye-sensitized NiO photocathodes was investigated. The results show the existence of a second electron hopping pathway between NiO surface states, which dominates recombination kinetics. The study highlights the importance of fast electron transport in sensitized NiO photocathodes.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2022)
Article
Chemistry, Physical
Fatima Santos, Carolina Hora, Dzmitry Ivanou, Adelio M. Mendes
Summary: Due to their high power conversion efficiency under indoor light, dye-sensitized solar cells (DSSCs) are considered a promising energy technology for future IoT devices and wireless sensors. Monolithic design DSSCs offer advantages in commercial production, such as straightforward processing, low cost, and compactness.
ACS APPLIED ENERGY MATERIALS
(2021)
Review
Chemistry, Multidisciplinary
Ana Belen Munoz-Garcia, Iacopo Benesperi, Gerrit Boschloo, Javier J. Concepcion, Jared H. Delcamp, Elizabeth A. Gibson, Gerald J. Meyer, Michele Pavone, Henrik Pettersson, Anders Hagfeldt, Marina Freitag
Summary: Dye-sensitized solar cells (DSCs) and dye-sensitized photoelectrochemical cells (DSPECs) have seen a revival in recent years as they offer unique properties such as low cost, non-toxic materials, colorfulness, transparency, and efficiency in low light conditions. This review covers advancements in DSC technology over the past decade, including theoretical studies, characterization techniques, materials, applications, and commercialization efforts by various companies.
CHEMICAL SOCIETY REVIEWS
(2021)
Article
Chemistry, Physical
Jincheng An, Zhifeng Tian, Li Zhang, Xichuan Yang, Bin Cai, Ze Yu, Liyan Zhang, Anders Hagfeldt, Licheng Sun
Summary: Three novel push-pull dyes, AJ502, TZ101 and TZ102, were synthesized and used as co-sensitizers in dye-sensitized solar cells (DSSCs). Among them, the co-sensitization of AJ502 with TZ101 and TZ102 significantly improves the power conversion efficiency of the DSSC, with the fluorine atoms in TZ101 playing a critical role in widening the active light capturing bands on the TiO2 film.
JOURNAL OF MATERIALS CHEMISTRY A
(2021)
Article
Chemistry, Applied
Yunyu Tang, Yueqiang Wang, Qifan Yan, Kaiwen Zeng, Weiqiang Tang, Shuangliang Zhao, Cong Kong, Yongshu Xie
Summary: Three porphyrin dyes were designed and synthesized to fabricate efficient DSSCs, showing enhanced efficiency through optimized donor and acceptor structures, improved electron donating ability, and suppressed dye aggregation. Cosensitization with WS-5 further elevated the efficiencies of the dyes.
Article
Chemistry, Multidisciplinary
S. Kotteswaran, P. Ramasamy
Summary: The Ko-2 dye, with a triphenylamine group as an electron donor, displayed improved efficiency and performance in dye sensitized solar cells compared to Ko-1, due to its higher molar extinction coefficient, lower HOMO and LUMO values, and better electronic interaction between its components.
NEW JOURNAL OF CHEMISTRY
(2021)
Article
Nanoscience & Nanotechnology
Jiazhi Zou, Yuqing Wang, Glib Baryshnikov, Jiaxin Luo, Xueyan Wang, Hans Agren, Chengjie Li, Yongshu Xie
Summary: To develop efficient dye-sensitized solar cells, a new class of dye called concerted companion dye (CC dye) has been reported. These dyes exhibit panchromatic absorption and excellent photovoltaic performance. By wrapping the dye molecules with alkoxy chains of various lengths, the antiaggregation ability of the dyes is further enhanced, leading to improved photovoltaic performance. This research provides a new approach for constructing high-performance dye-sensitized solar cells.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Physical
Dimple Dimple, Sebastien Lebegue, Mariachiara Pastore
Summary: The study theoretically characterizes the adsorption mechanism of different anchoring groups on the CuCrO2 surface, showing distinct stable modes for each group. On the stoichiometric surface, mono-dentate binding is preferred, while bidentate binding becomes the preferred mode when Cu+ vacancies are considered.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Chemistry, Physical
Rahim Ghadari, Alireza Sabri, Paria-Sadat Saei, Fantai Kong, Yousef Mohammadzadeh, Emre Guzel
Summary: The study utilized surface plasmon resonance of silver nanoparticles to enhance porphyrin-sensitized solar cells, investigating the impact of different substituents on porphyrins and the electronic properties of porphyrin-AgNPs systems. The results showed that the nature of substituents plays a significant role in the performance of the systems.
JOURNAL OF POWER SOURCES
(2021)
Article
Chemistry, Physical
Mao Yan, Qun-Hui Wang, Yi-Zhou Zhu, Ming-Liang Han, Yi-Qiao Yan, Jian-Yu Zheng
Summary: By introducing triptycene into porphyrin sensitizers, the designed dyes exhibit broadened absorption and improved ability to diminish charge recombination, resulting in higher power conversion efficiency.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2021)
Article
Materials Science, Multidisciplinary
Fengjuan Miao, Fuchen Chu, Bingcheng Sun, Bairui Tao, Peng Zhang, Yu Zang, Paul K. Chu
Summary: This study presents the design and fabrication of a photoanode composed of Au/SnS/TiO2 sensitized with natural dye for dye-sensitized solar cells (DSSCs). By calcination, a layer of spherical nano-TiO2 is prepared, and a layer of nano-SnS is deposited on the TiO2 photoanode using the continuous ion layer adsorption reaction (SILAR). The sensitized Au nanoparticles exhibit enhanced localized surface plasmon resonance (LSPR) effects and electron trapping ability, resulting in improved electron mobility and reduced electron recombination in the DSSC.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Materials Science, Biomaterials
D. S. Abdullah Al Maruf, Krishnan Parthasarathi, Kai Cheng, Payal Mukherjee, David R. McKenzie, Jeremy M. Crook, Gordon G. Wallace, Jonathan R. Clark
Summary: This review focuses on the recent progresses in modulating the physiochemical properties and applications of biomaterials in bone tissue engineering (BTE) for mandibular segmental defect repair. BTE is an important strategy for reconstructing critical-sized bone defects and improving patients' quality of life.
INTERNATIONAL JOURNAL OF POLYMERIC MATERIALS AND POLYMERIC BIOMATERIALS
(2023)
Article
Engineering, Environmental
Kezhong Wang, Yunfeng Chao, Zhiqi Chen, Sepidar Sayyar, Caiyun Wang, Gordon Wallace
Summary: A facile coaxial wet-spinning method was used to continuously produce hollow graphene fibers with high conductivity and flexibility. The resulting fibers exhibited outstanding electrochemical and mechanical properties, making them promising candidates for use in wearable supercapacitors and electronics.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Polymer Science
Abdul Moqeet Hai, Zhilian Yue, Stephen Beirne, Gordon Wallace
Summary: Electrowriting combines 3D printing and electrospinning to produce complex structures with submicron resolutions. This study demonstrates the compatibility of water-based silk fibroin ink with electrowriting and explores the optimization of ink composition and process parameters. The electrowriting of hydrophilic silk fibroin has the potential to create material structures with biological properties similar to natural systems.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Xiaoteng Jia, Xuenan Ma, Li Zhao, Meiying Xin, Yulei Hao, Peng Sun, Chenguang Wang, Danming Chao, Fangmeng Liu, Caiyun Wang, Geyu Lu, Gordon Wallace
Summary: Implanted rechargeable batteries with biodegradable properties are highly desirable, but limited by the lack of suitable electrode materials. In this study, we present a molecular engineering strategy to develop erodible poly(3,4-ethylenedioxythiophene) (PEDOT) with hydrolyzable carboxylic acid pendants. The compact rechargeable Zn battery with this material demonstrates high capacity and cycling stability, and shows complete biodegradation and biocompatibility in vivo. This strategy offers potential for developing implantable conducting polymers with predetermined degradation profiles and high energy storage capability.
Correction
Multidisciplinary Sciences
Nutan Chaudhari, Alison D. Findlay, Andrew W. Stevenson, Tristan D. Clemons, Yimin Yao, Amar Joshi, Sepidar Sayyar, Gordon Wallace, Suzanne Rea, Priyanka Toshniwal, Zhenjun Deng, Philip E. Melton, Nicole Hortin, K. Swaminathan Iyer, Wolfgang Jarolimek, Fiona M. Wood, Mark W. Fear
NATURE COMMUNICATIONS
(2023)
Article
Multidisciplinary Sciences
Yan Zhou, Xiaoteng Jia, Daxin Pang, Shan Jiang, Meihua Zhu, Geyu Lu, Yaping Tian, Caiyun Wang, Danming Chao, Gordon Wallace
Summary: The authors propose a simplified wearable iontophoresis patch with a built-in Mg battery for efficient and controllable transdermal delivery. This patch eliminates the conventional interface impedance between the electrode and drug reservoir, reducing system complexity and size. The delivery dosage can be easily manipulated by tuning the viologen hydrogel and the iontophoresis stimulation mode.
NATURE COMMUNICATIONS
(2023)
Article
Electrochemistry
Amruthalakshmi Vijayakumar, Yong Zhao, Kezhong Wang, Yunfeng Chao, Haiqun Chen, Caiyun Wang, Gordon G. G. Wallace
Summary: In this study, a scalable one-step glucose blowing method was used to prepare a porous N-doped carbon supported Cu nanoparticles (Cu-NC) composite catalyst for CO2 electroreduction. The Cu-NC catalyst showed efficient catalytic activity for CO2-to-C1 product (CO and formate) conversion, with a high efficiency of 69% at an overpotential of 590 mV. The excellent catalytic activity is attributed to the structure of the composite and the presence of N-species in the carbonaceous matrix.
Article
Chemistry, Physical
Kyuman Kim, Pawel Wagner, Klaudia Wagner, Attila J. J. Mozer
Summary: Electrochemical CO2 reduction in non-aqueous media with Cu complex catalysts can selectively produce carbon monoxide or formic acid. This study demonstrates the highly selective electrochemical CO2 reduction to methane using a specific Cu2+ complex catalyst in dimethylformamide. The choice of electrolyte significantly affects the type and efficiency of the products, with alkali metal cations leading to the deposition of insulating carbonates and lower methane production. The morphology of the catalyst also plays a role in the variation of methane production efficiency.
Article
Chemistry, Physical
Samuel J. Harris, C. John McAdam, Pawel Wagner, Joseph I. Mapley, Keith C. Gordon
Summary: The vibrational and electronic properties of six systematicallyaltered donor-acceptor dyes were investigated using DFT, spectroscopy, and electrochemical techniques. The results showed that the geometry of the dyes was planar with extended pi-systems. The absorption and emission spectra demonstrated pi-pi* and charge transfer transitions, respectively, and the emission behavior was influenced by the acceptor units.
JOURNAL OF PHYSICAL CHEMISTRY A
(2023)
Article
Chemistry, Physical
Munavvar Fairoos Mele Kavungathodi, Pawel Wagner, Shogo Mori, Attila J. Mozer
Summary: In this study, it was found that high-oxidation-potential Cu1+ complexes exhibit fast electron transfer towards oxidized dyes but slow dye regeneration. The presence of Cu2+ complexes accelerates the recombination reaction between electrons and the oxidized dye. The previously unknown acceleration of kinetics could impact the design and evaluation of new redox mediators at a low driving force.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Review
Chemistry, Physical
Ruibo Zhong, Sepehr Talebian, Barbara B. Mendes, Gordon Wallace, Robert Langer, Joao Conde, Jinjun Shi
Summary: RNA-based therapeutics hold great promise in disease intervention, and hydrogels are attracting attention for controlled release of these therapeutics. Hydrogels offer advantages such as biodegradability, tunable physiochemical properties, and precise spatiotemporal control over RNA release.
Article
Chemistry, Physical
Sameh Hamzawy, Pawel Wagner, Takeshi Mori, Kadhim Al-Attafi, Attila J. Mozer, Andrew Nattestad
Summary: This study investigates photon upconversion in the presence of three classes of redox mediators, and finds that the small organic and heavy element-free redox mediator, TPAA(0/+), has the lowest quenching rate constant. This finding is important for future applications.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Cell & Tissue Engineering
Tajanka Mladenovska, Peter F. Choong, Gordon G. Wallace, Cathal D. O'Connell
Summary: New developments in additive manufacturing and regenerative medicine have the potential to disrupt traditional therapy development and medical device manufacture. Regulators face challenges in adapting traditional regulatory frameworks for bespoke solutions and incorporating living cells in 3D bioprinting. This perspective discusses the regulatory challenges of 3D bioprinting in comparison to existing cell therapies and custom-made medical devices, including classification, risk, standardization, and quality control.
REGENERATIVE MEDICINE
(2023)
Review
Chemistry, Multidisciplinary
Qilong Wu, Fangfang Zhu, Gordon Wallace, Xiangdong Yao, Jun Chen
Summary: This article introduces the severity of nitrogen pollution and calls for joint action for sustainable nitrogen use. Electrocatalytic NW reduction is presented as a potentially greener alternative for recycling NW and producing high-value chemicals. However, there are challenges in integrating this technology into upstream and downstream industrial chains. The article discusses future directions for optimizing production processes and providing nitrogenous raw materials.
CHEMICAL SOCIETY REVIEWS
(2023)