Article
Chemistry, Multidisciplinary
M. D. Shahjahan, Takuya Okamoto, Lata Chouhan, Bhagyashree Mahesha Sachith, Narayan Pradhan, Hiroaki Misawa, Vasudevanpillai Biju
Summary: In this study, we demonstrate the successful fabrication of multiple heterojunction structures in perovskite crystals using laser-assisted band gap engineering. This allows for efficient transport and trapping of photogenerated charge carriers. The developed donor-acceptor halide perovskites have potential applications in photovoltaic, photonic, and electronic devices.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Materials Science, Multidisciplinary
Guilong Cai, Yuhao Li, Jiayu Wang, Yiqun Zhang, Xinhui Lu, Jiarong Lian, Pengju Zeng, Yiping Wang, Xiaowei Zhan
Summary: Two nonfullerene acceptors with different bridge structures show effects on photovoltaic performance, with the BT-bridge enhancing the performance of the dimers more significantly compared to the TT-bridge.
ACS APPLIED POLYMER MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Suinan Deng, Lianjie Zhang, Jingbo Zheng, Ji Li, Shuyi Lei, Zuhao Wu, Dezhi Yang, Dongge Ma, Junwu Chen
Summary: In this work, a new simple fused-ring acceptor NTQ was designed and synthesized to demonstrate the first example of a near-infrared organic photodetector with a non-fused A-D-A'-D-A molecular framework. The optimized geometry and high electron mobility of NTQ make it a promising material for various applications.
ADVANCED OPTICAL MATERIALS
(2022)
Article
Chemistry, Physical
Xue Lai, Hanjian Lai, Mengzhen Du, Hui Chen, Dongsheng Qiu, Yulin Zhu, Mingrui Pu, Yiwu Zhu, Erjun Zhou, Feng He
Summary: Quasiplanar heterojunction organic solar cells, with efficient exciton dissociation and charge transfer, have gained attention. In this study, a co-acceptor-based Q-PHJ OSC with enhanced crystallinity was achieved using two compatible acceptors. The co-Q-PHJ device exhibited improved thermal stability and efficiency.
CHEMISTRY OF MATERIALS
(2022)
Article
Energy & Fuels
Bing Lu, Zhecheng Zhang, Boyu Jia, Guilong Cai, Jingshuai Zhu, Xinhui Lu, Xiaowei Zhan, Yong Yao
Summary: Two intermediates were synthesized to isomerize naphthalene-based decacyclic fused-ring electron acceptors FTIC1 and FTIC2. FTIC1 and FTIC2 share similar optical properties, with FTIC2 showing higher absorbance and electron mobility. FTIC2-based devices exhibit higher efficiency and current density in organic solar cells.
Article
Engineering, Environmental
Linjiao Qin, Xianda Li, Chuanqi Dong, Jialing Zhou, Qiang Guo, Ailing Tang, Yufei Zhong, Erjun Zhou
Summary: Developing low-cost photovoltaic materials, such as p-type polymers and n-type small molecules, for organic photovoltaic (OPV) cells is challenging. Non-fused nonfullerene acceptors have been attracting attention due to their simple synthesis and easy modification. In this study, a completely non-fused nonfullerene acceptor, Cl-BTA33, was designed and combined with a classic low-cost polymer, PTQ10, resulting in improved efficiency for outdoor and indoor applications.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Materials Science, Multidisciplinary
Tianyang Dong, Jie Li, Chong Wang, Lingmin Yu, Yinglin Song, Chunru Wang, Li Jiang, Chunli Bai
Summary: The third-order nonlinear optical properties of two noncovalently fused-ring A-pi-D-pi-A electron acceptor molecules, NOC6F-1 and NOC6F-2, were investigated using the Z-scan technique in film and solution forms. NOC6F-2 demonstrated significantly better reverse saturation absorption properties compared to NOC6F-1, both in poly(methyl methacrylate) films and polar solvents. Density functional theory calculations revealed that the large dihedral angle in NOC6F-2 contributes to its larger dipole moment and second hyperpolarizability, which affects its nonlinear optical behavior. Additionally, the dipole moment was found to be an important factor in enhancing the nonlinear optical properties of organic molecules. This study provides valuable guidance for the future design of high-performance organic nonlinear optical materials.
ADVANCED OPTICAL MATERIALS
(2023)
Review
Chemistry, Multidisciplinary
Lei Zhu, Ming Zhang, Wenkai Zhong, Shifeng Leng, Guanqing Zhou, Yecheng Zou, Xuan Su, Han Ding, Peiyang Gu, Feng Liu, Yongming Zhang
Summary: The article reviews the importance of non-fullerene acceptors (NFAs) in organic solar cells (OSCs) and the key steps and influencing factors for morphology optimization. It examines the morphological characteristics and recent research progress of pi-conjugated molecular systems based on IDT and Y6, as well as n-type pi-conjugated polymers, with special attention to high-performance Y6-based NFAs. The article aims to provide useful information and guidance for morphology optimization and achieving higher efficiency devices.
ENERGY & ENVIRONMENTAL SCIENCE
(2021)
Article
Chemistry, Multidisciplinary
Lixuan Liu, Yang Yang, Stefan C. J. Meskers, Qingkai Wang, Liting Zhang, Chen Yang, Jianqi Zhang, Lingyun Zhu, Yajie Zhang, Zhixiang Wei
Summary: Supramolecular chiral organization in fused-ring electron-acceptor BTP-4F single-crystal-based phototransistors enables distinguished CPL discrimination capability with high current dissymmetry factor. The chirality at the supramolecular level originates from chiral exciton coupling of a unique quasi-2D organization. Finite element simulations reveal amplified, inverted, and anisotropic current dissymmetry.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
De-Li Ma, Qian-Qian Zhang, Chang-Zhi Li
Summary: The modulation of halogen substituents on aromatic side chains improves the efficiency and stability of organic solar cells.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Physical
Dou Luo, Zhengyan Jiang, Wanli Yang, Xugang Guo, Xuehui Li, Erjun Zhou, Gongqiang Li, Lanqing Li, Chenghao Duan, Chengwei Shan, Zhaojin Wang, Yuheng Li, Baomin Xu, Aung Ko Ko Kyaw
Summary: This study demonstrates a method to improve the efficiency of organic solar cells (OSCs) by using two tailor-made non-fused ring electron acceptors (NFREAs). By introducing an ambipolar NFREA as the third component, smooth charge transfer routes and additional carrier generation are achieved. The results show that, with similar molecular structure and enhanced molecular packing, the power conversion efficiency of the ternary blend is significantly higher than that of the binary devices.
Article
Chemistry, Physical
Giulia M. Lo Gerfo, Luca Bolzonello, Francisco Bernal-Texca, Jordi Martorell, Niek F. van Hulst
Summary: Understanding the spatial dynamics of nanoscale exciton transport is crucial for improving nanostructured optoelectronic devices. By using spatiotemporally resolved photoluminescence microscopy, we directly track diffusion and accurately determine the diffusion coefficient of the nonfullerene electron acceptor Y6, which provides valuable information for further studies on exciton dynamics in energy materials.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2023)
Article
Chemistry, Physical
Courtney A. DelPo, Saeed-Uz-Zaman Khan, Kyu Hyung Park, Bryan Kudisch, Barry P. Rand, Gregory D. Scholes
Summary: Enhanced delocalization is beneficial for absorbing molecules in organic solar cells, and polaritons offer exceptional delocalization that can improve the efficiency of bilayer organic photovoltaics by aiding in exciton delivery to the donor-acceptor interface. The decay of polaritons in bilayer cavities shows an additional pathway through charge transfer, indicating that the charge transfer from the polariton is fast enough to outcompete decay to the ground state.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2021)
Article
Polymer Science
Xin Zhang, Linqing Qin, Laiyang Li, Xingzheng Liu, Yanan Wei, Hui Huang
Summary: In this study, a series of low-cost acceptors named NFREAs were successfully constructed by employing the strategy of noncovalently conformational locks. Among them, BDTO-4F exhibited a higher figure-of-merit value and power conversion efficiency, demonstrating its potential for constructing low-cost and high-performance NFREAs.
MACROMOLECULAR RAPID COMMUNICATIONS
(2022)
Article
Chemistry, Multidisciplinary
Heng Lu, Kai Chen, Raja Sekhar Bobba, Jiangjian Shi, Mengyang Li, Yilin Wang, Jingwei Xue, Peiyao Xue, Xiaojian Zheng, Karen E. Thorn, Isabella Wagner, Chao-Yang Lin, Yin Song, Wei Ma, Zheng Tang, Qingbo Meng, Quinn Qiao, Justin M. Hodgkiss, Xiaowei Zhan
Summary: This study presents a facile strategy to enhance the exciton/charge transport of PM6:Y6-based organic solar cells (OSCs) by using a solid additive, trans-bis(dimesitylboron)stilbene (BBS). The addition of BBS improves the exciton diffusion and charge generation, enhances the crystallization of Y6, and improves the charge-carrier diffusion length. This leads to a higher power conversion efficiency (PCE) of 17.6% in the PM6:Y6:BBS devices compared to the devices without BBS (16.2%).
ADVANCED MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Yixin Dong, Xiyue Dong, Di Lu, Mingqian Chen, Nan Zheng, Rui Wang, Qiaohui Li, Zengqi Xie, Yongsheng Liu
Summary: In this study, a new organic semiconductor spacer, BThDMA, was developed for 2D DJ perovskite solar cells. Compared to other spacers, BThDMA showed stronger orbital interactions and crystal growth ability, resulting in improved efficiency and stability of the cells.
ADVANCED MATERIALS
(2023)
Article
Food Science & Technology
Chima Robert, Wendy E. Bain, Cameron Craigie, Talia M. Hicks, Mark Loeffen, Keith C. Gordon, Sara J. Fraser-Miller
Summary: The study compared the performance of mid infrared (MIR), near infrared (NIR) and Raman spectroscopy in estimating fatty acid (FA) composition in processed lamb and explored the potential improvement by fusing data from multiple instruments. The results showed that data fusion had slight improvements in predicting certain FA parameters, but MIR spectroscopy outperformed the other techniques in estimating these parameters.
Article
Chemistry, Physical
Suinan Deng, Wenjun Luo, Lianjie Zhang, Guojing Xie, Shuyi Lei, Mei Luo, Zuhao Wu, Dong Yuan, Jiahao Liang, Zengqi Xie, Junwu Chen
Summary: Aromatic substituent engineering of side chains is crucial for molecular structure and properties. Through efficient regioselective acylation, the key aromatic substituted cores of simple nonfullerene acceptors were successfully realized. The synthesized acceptors, Ph-BDD and C4Ph-BDD, exhibited different aggregation and crystallinity due to the difference in the phenyl-substituted benzodithiophenedione core moiety. Ph-BDD with bare benzene rings showed a higher power conversion efficiency (PCE) of 13.64% compared to C4Ph-BDD (PCE of 11.37%). Both Ph-BDD and C4Ph-BDD-based devices retained 97% of their original efficiency after more than 60 days of air storage. This study highlights the importance of feasible regioselective acylation for the development of stable and high-performing nonfullerene solar cells.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Nanoscience & Nanotechnology
Jonathan Barsotti, Sara Perotto, Andrea Candini, Elisabetta Colombo, Franco V. A. Camargo, Stefano Di Marco, Mattia Zangoli, Samim Sardar, Alex J. Barker, Cosimo D'Andrea, Giulio Cerullo, Shlomo Rozen, Fabio Benfenati, Francesca Di Maria, Guglielmo Lanzani
Summary: This study demonstrates that thiophene-based core@shell nanoparticles with an oxidized shell (P3HT@PTDOx NPs) exhibit a type II interface at the particle surface. This unique nanoarchitecture enables the development of advanced photon nanotransducers with distinct chemical-physical and biofunctional properties. The spatial localization of excitation energy in P3HT@PTDOx NPs differs from nonoxidized NPs, leading to a prevalence of surface states and efficient photostimulation of retinal neurons. In degenerate retinas, P3HT@PTDOx NPs show superior effectiveness in photostimulation compared to P3HT NPs.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Ji-Eun Jeong, Joshua J. Sutton, Hwa Sook Ryu, Minsu Kang, Elliot J. Tay, Thanh Luan Nguyen, Keith C. Gordon, Sang-Hee Shim, Han Young Woo
Summary: Resonance Raman spectroscopy is an efficient tool for multiplex imaging due to the narrow bandwidth of electronically enhanced vibrational signals. However, Raman signals are often overshadowed by fluorescence. In this study, a series of truxene-based conjugated Raman probes were synthesized to exhibit structure-specific Raman fingerprint patterns. The subsequent formation of polymer dots effectively suppressed fluorescence and improved particle stability, enabling successful Raman imaging using a single 532 nm laser.
Article
Chemistry, Physical
Chayanit Wechwithayakhlung, Geoffrey R. Weal, Yu Kaneko, Paul A. Hume, Justin M. Hodgkiss, Daniel M. Packwood
Summary: Simulations of exciton and charge hopping in amorphous organic materials require computing numerous physical parameters, resulting in significant computational overhead. Previous machine learning models have long training times, increasing simulation overhead. In this paper, we present a new machine learning architecture to reduce training time and successfully predict coupling parameters for exciton hopping simulations in amorphous pentacene. Our architecture achieves excellent predictions and shows the potential of reducing computational overhead with machine learning.
JOURNAL OF CHEMICAL PHYSICS
(2023)
Article
Multidisciplinary Sciences
Ningning Tang, Jiadong Zhou, Liangxuan Wang, Matthias Stolte, Guojing Xie, Xinbo Wen, Linlin Liu, Frank Wuethner, Johannes Gierschner, Zengqi Xie
Summary: Nano-sized PBI dyes achieve deep-red emission and avoid common quenching pathways by tuning the dihedral angle between the aromatic and alkoxy groups.
NATURE COMMUNICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Anindita Sen, Helen Poulsen, Sven Sondhauss, Justin M. Hodgkiss
Summary: Colorimetric gold-nanoparticle-based biosensors with DNA aptamer probes offer a simple, rapid, sensitive, selective, and cost-effective platform for detecting small-molecule analytes like methamphetamine. However, the complex nature of saliva poses challenges, including interference from proteins and specific electrolytes. This study explores strategies, such as sample collection and pretreatment, to mitigate these effects and successfully detect methamphetamine in saliva samples, highlighting the potential of these sensors for on-site diagnostic applications.
Article
Pharmacology & Pharmacy
Peter I. I. I. J. G. Remoto, Karlis Berzins, Sara J. Fraser-Miller, Timothy M. Korter, Thomas Rades, Jukka Rantanen, Keith C. Gordon
Summary: The solid-state landscape of carbamazepine during dehydration was investigated using both low- (-300 to -15, 15 to 300 cm(-1)) and mid- (300 to 1800 cm(-1)) frequency Raman spectroscopy. Density functional theory with periodic boundary conditions was employed to characterize the carbamazepine dihydrate and different forms, which showed good agreement with experimental Raman spectra. The dehydration process of carbamazepine dihydrate at various temperatures (40, 45, 50, 55, and 60 ?) was explored using principal component analysis and multivariate curve resolution, revealing different transformation pathways of solid-state forms. Low-frequency Raman spectroscopy was found to effectively detect the rapid growth and subsequent decline of carbamazepine form IV, which was not as well observed by mid-frequency Raman spectroscopy. These findings highlight the potential benefits of low-frequency Raman spectroscopy in pharmaceutical process monitoring and control.
Article
Chemistry, Physical
Zhiqiang Wang, Wenkui Wei, Liang Zeng, Tao Liu, Xiyue Yuan, Jiadong Zhou, Bingyan Yin, Junyu Li, Zengqi Xie, Fei Huang, Yong Cao, Chunhui Duan
Summary: This study reports the synthesis and application research of three A-DA & PRIME;D-A-type pentacyclic fullerene electron acceptors. Compared with the prevailing heptacyclic fullerene electron acceptors, these pentacyclic fullerene acceptors have lower synthetic complexity. Among them, the acceptor BTPT4F-BO exhibits a high power conversion efficiency of 15.0% in organic solar cells, with low synthetic complexity.
CHEMISTRY OF MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Zhibin Feng, Jiadong Zhou, Xiandong He, Bohan Wang, Guojing Xie, Xianfeng Qiao, Linlin Liu, Zengqi Xie, Yuguang Ma
Summary: Researchers have successfully developed two diradicals with super stability by increasing conjugation and electron-withdrawing effects, which expands the potential applications of organic spintronic devices.
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
Article
Nanoscience & Nanotechnology
Ivo Tanghe, Margarita Samoli, Isabella Wagner, Servet Ataberk Cayan, Ali Hossain Khan, Kai Chen, Justin Hodgkiss, Iwan Moreels, Dries Van Thourhout, Zeger Hens, Pieter Geiregat
Summary: Colloidal quantum dots have been investigated for low-cost light emission and lasing for nearly two decades. Bulk nanocrystals of CdS show exceptional material gain, low thresholds, and long lifetimes. The findings are attributed to a strong bandgap renormalization effect. Additionally, broadband amplified spontaneous emission and lasing were demonstrated under quasi-continuous-wave conditions.
NATURE NANOTECHNOLOGY
(2023)
Article
Pharmacology & Pharmacy
Malinda Salim, Sara J. Fraser-Miller, Karlis Berzins, Joshua J. Sutton, Keith C. Gordon, Ben J. Boyd
Summary: Low-frequency Raman spectroscopy (LFRS) is used to detect and track the precipitation of drugs in lipid-based formulations during digestion. Multivariate data analysis and univariate analysis approaches were used to analyze the spectral changes over time and compare the results with small angle X-ray scattering (SAXS) measurements. LFRS was found to be a complementary technique to determine the kinetics of drug precipitation from lipid-based formulations, potentially providing more accessible results than SAXS.
Article
Chemistry, Physical
Matthew W. W. Brett, Michael B. B. Price, Calum K. K. Gordon, Karen E. Thorn, Lara D. Browne, Paul A. Hume, Justin M. Hodgkiss, Bridget L. Stocker, Mattie S. M. Timmer, Nathaniel J. L. K. Davis
Summary: The demand for fluorescent organic dyes has led to exploration of tuneable emission dyes. These dyes have a desirable tuneable nature for applications in OLEDs, optical sensors, and fluorescence imaging. This study presents four novel perylene-acene dyads that exhibit solvent tuneable emission, proposing a new mechanism based on charge transfer state. The dyes achieved high photoluminescence quantum efficiencies (PLQEs) of up to 45% depending on the solvent, indicating the potential for accessing higher PLQE tuneable emission using this mechanism.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Article
Chemistry, Organic
Oliver Nagler, Kazutaka Shoyama, Olga Anhalt, Matthias Stolte, Rajeev K. Dubey, Zengqi Xie, Frank Wuerthner
Summary: This study reports a synthetic strategy to tune the structural and fluorescence properties of PBI dyes by employing a bay-substitution pattern. By introducing boron, carbon, or silicon atoms at the 1,12-positions and further functionalization, novel perylene dyes with excellent optical properties have been successfully synthesized.
ORGANIC CHEMISTRY FRONTIERS
(2023)