Article
Chemistry, Applied
Sandra Fusco, Mario Barra, Matteo Bonomo, Antonio Cassinese, Roberto Centore, Fabio Chiarella, Francesco Senneca, Antonio Carella
Summary: Four novel DPP derivatives were synthesized and characterized in this study, which displayed excellent optical and electrochemical properties suitable for application as n-type semiconductors. Organic field-effect transistors based on these compounds exhibited n-type behavior and, in some cases, showed interesting and balanced ambipolar charge transport behavior.
Article
Materials Science, Multidisciplinary
Andrius Aukstuolis, Nerijus Nekrasas, Kristijonas Genevicius, Giedrius Juska
Summary: The paper investigates hole transport properties in sandwich and OFET structures with a single active layer of PBDTTPD. Results show time-dependent hole mobility, non-Gaussian DOS tail, and smaller bimolecular recombination coefficient compared to Langevin recombination coefficient. Investigation also includes the influence of OTS treatment on hole transport and evaluation of energetic disorder of interface DOS in the channel.
ORGANIC ELECTRONICS
(2021)
Article
Chemistry, Physical
Shashikana Paria, Shubhasree Das, Tushar Tyagi, Anirban Kumar Maity, Shubhra Bikash Maity, Atanu Jana, Prasenjit Maity
Summary: A porphyrin acetylide-stabilized gold cluster was synthesized using a biphasic ligand-exchange method, and efficient through-space charge/electron transfer was observed from porphyrin to the gold cluster, causing luminescence quenching. The porphyrin acetylide-appended gold cluster showed better efficacy in detecting nitro-organic explosives.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Review
Chemistry, Inorganic & Nuclear
Tiago Fernandes, Ana L. Daniel-da-Silva, Tito Trindade
Summary: Recent advancements in nanochemical routes have provided important tools for the preparation of multifunctional nanomaterials, allowing for precise control of their physicochemical properties. Metal nanoparticles and hybrid structures with magnetic nanoparticles have proven to be useful in chemical species analysis and surface-enhanced Raman scattering material fabrication.
COORDINATION CHEMISTRY REVIEWS
(2022)
Article
Chemistry, Multidisciplinary
Pedro Mateus, Antoine Jacquet, Alejandro Mendez-Ardoy, Alice Boulloy, Brice Kauffmann, Gilles Pecastaings, Thierry Buffeteau, Yann Ferrand, Dario M. Bassani, Ivan Huc
Summary: The selective binding properties of a 13-mer oligoamide foldamer capsule composed of 4 different aromatic subunits were investigated, showing symmetry breaking upon binding certain dicarboxylic acids. The charge transport properties of a monolayer upon encapsulation of dicarboxylic acid were significantly different, attributed to protonation of the aromatic foldamer backbone. Studies also demonstrated the formation of a single molecule layer of the foldamer capsule oriented vertically with respect to the surface.
Article
Materials Science, Multidisciplinary
Mile Gao, Junhyuk Jang, Van T. N. Mai, Chandana Sampath Kumara Ranasinghe, Ronan Chu, Paul L. Burn, Ian R. Gentle, Almantas Pivrikas, Paul E. Shaw
Summary: In this study, the effect of different solubilizing surface groups on the optoelectronic properties of Ir(ppy)3-cored dendrimer films was investigated, showing minimal impact on blend films and lower hole mobility. Despite the lower hole mobility, simple OLEDs were able to achieve a high maximum external quantum efficiency.
ORGANIC ELECTRONICS
(2021)
Article
Nanoscience & Nanotechnology
Sarasija Das, Arnab Mandal, Md. Tousif Alam, Chandan Kumar, Ayan Sarkar, Satyaprasad P. Senanayak, Sayan Bhattacharyya, Sanjio S. Zade
Summary: In this study, the synthesis, characterization, and optoelectronic investigation of a stable 4n pi dihydrotetraaza-pentacene derivative are described. The compound exhibits exceptional stability and multi-functionality, displaying photoresponsive behavior under visible light, acidochromism in solution, and high hole mobility in the mentioned field-effect measurements.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Multidisciplinary
Jianhui Li, Zhuoting Ji, Aihua He, Haichang Zhang
Summary: In this study, a new organic semiconductor FDPP with a good core structure and aggregation is synthesized and characterized, exhibiting high performance.
FRONTIERS IN CHEMISTRY
(2023)
Article
Materials Science, Multidisciplinary
Eduardo Aznar-Gadea, Pedro J. Rodriguez-Canto, Juan P. Martinez-Pastor, Andrii Lopatynskyi, Vladimir Chegel, Rafael Abargues
Summary: The study presents a solid-state plasmonic sensor based on Ag nanoparticles and a molecularly imprinted polymer for selective detection of 3-nitrotoluene. The sensor fabrication involves the in situ synthesis of Ag nanoparticles and molecular imprinting, resulting in enhanced specificity and sensitivity towards 3-NT.
ACS APPLIED POLYMER MATERIALS
(2021)
Article
Nanoscience & Nanotechnology
Yunseul Kim, Yeon-Ju Kim, Yeong-A Kim, Eunhwan Jung, Yoonjung Mok, Kihyeun Kim, Hansu Hwang, Jong-Jin Park, Min-Gon Kim, Sanjay Mathur, Dong-Yu Kim
Summary: This work successfully demonstrated how the control of the closed/open-shell character of quinoidal building blocks changes charge transport and spin properties of quinoidal conjugated polymers via quinoid-aromatic interconversion.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Multidisciplinary
Bendix Ketelsen, Hendrik Schlicke, Verena R. Schulze, Sophia C. Bittinger, Shin-Da Wu, Shan-hui Hsu, Tobias Vossmeyer
Summary: Directional strain sensing is crucial for advanced sensor applications in the field of human-machine interfaces and healthcare. This study focuses on the angle dependent anisotropic strain sensitivity caused by charge carriers percolating through cross-linked gold nanoparticle networks, and utilizes these versatile materials to fabricate wearable triaxial pulse and gesture sensors. The anisotropic response of the materials is separated into geometric and piezoresistive contributions, indicating a slightly anisotropic behavior. The materials are patterned and embedded into a flexible silicone polymer for healthcare applications, with a wireless read-out demonstrating their potential for skin-wearable healthcare sensors.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Jie Zhang, Eric P. Fahrenthold
Summary: Spin current based sensing methods offer a new approach to the development of selective detection devices for explosive molecules, providing improved selectivity compared to carbon nanotube based devices.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Physical
Kentaro Doi, Kyohei Yamamoto, Hiroki Yamazaki, Satoyuki Kawano
Summary: This study proposes a novel method to enhance the signal-to-noise ratio of electrical signals of single particles using optical tweezers and a microchannel. By trapping a microparticle in a micro-orifice, the electrical signal from a target particle passing by can be sharpened and separated from background noise. By switching the micro-orifice between opening and closing with near-infrared light, target particles can be transported to the sensing section effectively.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Nanoscience & Nanotechnology
Sidney A. Howell, Manikandan Koodalingam, Junhyuk Jang, Chandana Sampath Kumara Ranasinghe, Mile Gao, Ronan Chu, Mohammad Babazadeh, David M. Huang, Paul L. Burn, Paul E. Shaw, Emma V. Puttock
Summary: The authors synthesized a family of first-generation dendrimers with 3,5-bis(carbazolyl)-phenyl dendrons attached to a green emissive fac-tris(2-phenylpyridyl)iridium(III) core. The dendrimers' solubility was increased by adding tert-butyl surface groups to the carbazole moieties. The density of the films containing doubly dendronized materials was higher than those containing mono-dendronized counterparts, with the highest density at 1.12 +/- 0.04 g cm-3 for the dendrimer with two rotationally constrained dendrons per ligand. The dendrimers also showed high photoluminescence quantum yields (PLQYs) in solution and were incorporated into solution-processed OLEDs with high external quantum efficiencies.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Hsin-Yun Tsai, W. Russ Algar
Summary: Forster resonance energy transfer (FRET) is widely used for biological probes and sensors. Concentric FRET (cFRET) probes enable multiplexed sensing with a single vector. This study demonstrates that dendrimers labeled with a luminescent terbium complex (Tb) can be a viable alternative platform for cFRET probes. This dendrimer-based architecture shows the importance of cFRET for the development of a new generation of probes for biological sensing.
Article
Chemistry, Medicinal
Martin Stroet, Stephen Sanderson, Audrey Sanzogni, Sharif Nada, Thomas Lee, Bertrand Caron, Alan E. Mark, Paul L. Burn
Summary: The performance of organic optoelectronic devices depends on the molecular-scale morphology of their thin films. Experimental characterization of morphology at the molecular level is challenging. Molecular dynamics simulation is used to understand the relationship between morphology and the properties of thin-film devices. PyThinFilm is an open source Python package that allows automated molecular dynamics simulations of thin film growth. It has been used to study the thin films of organic semiconductor materials typically used in OLEDs and OSCs.
JOURNAL OF CHEMICAL INFORMATION AND MODELING
(2023)
Article
Nanoscience & Nanotechnology
Sidney A. Howell, Manikandan Koodalingam, Junhyuk Jang, Chandana Sampath Kumara Ranasinghe, Mile Gao, Ronan Chu, Mohammad Babazadeh, David M. Huang, Paul L. Burn, Paul E. Shaw, Emma V. Puttock
Summary: The authors synthesized a family of first-generation dendrimers with 3,5-bis(carbazolyl)-phenyl dendrons attached to a green emissive fac-tris(2-phenylpyridyl)iridium(III) core. The dendrimers' solubility was increased by adding tert-butyl surface groups to the carbazole moieties. The density of the films containing doubly dendronized materials was higher than those containing mono-dendronized counterparts, with the highest density at 1.12 +/- 0.04 g cm-3 for the dendrimer with two rotationally constrained dendrons per ligand. The dendrimers also showed high photoluminescence quantum yields (PLQYs) in solution and were incorporated into solution-processed OLEDs with high external quantum efficiencies.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Hui Li, Ronan Chu, Abdulaziz S. R. Bati, Satakshi Gupta, Paul L. Burn, Ian R. Gentle, Paul E. Shaw
Summary: The study investigates the impact of two fluorinated additives (FPAI and FMABr) on the performance of inverted perovskite solar cells. By adding FPAI to the anode modifying layer and blending 0.32 mol% of FMABr into the perovskite layer, hysteresis-free current density-voltage characteristics and a maximum power conversion efficiency of 22.3% were achieved, indicating a 1.7% improvement compared to the control device.
ADVANCED MATERIALS INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Kinitra L. Hutchinson, Beta Z. Poliquit, Andrew J. Clulow, Paul L. Burn, Ian R. Gentle, Paul E. Shaw
Summary: Thin films of two poly(dendrimer)s were studied for the detection of trace quantities of nitrobased taggants and explosives. The addition of first-generation biphenyl-based dendrons to one of the polymers resulted in greater sensitivity and recovery to nitroaliphatic and nitroaromatic analytes compared with the other polymer. Neutron reflectometry was employed to characterize the vapor uptake of the polymers and a structurally similar dendrimer. The results demonstrated the importance of increasing the dendritic character in optimizing vapor uptake and improving sensing performance.
AUSTRALIAN JOURNAL OF CHEMISTRY
(2023)
Article
Chemistry, Analytical
Alex S. Loch, Paul L. Burn, Paul E. Shaw
Summary: This paper describes four compounds that are capable of detecting illicit drugs through a photoinduced hole transfer process. The properties of these compounds can be tuned by adding different donor and acceptor units, and they can be used to prepare high-quality, undoped thin films. The films containing electron withdrawing groups such as aldehyde and dicyanovinyl can detect the vapors of methamphetamine, MDMA, cocaine, and fentanyl, while the films without these groups cannot detect cocaine and MDMA.
SENSORS AND ACTUATORS B-CHEMICAL
(2023)
Article
Materials Science, Multidisciplinary
Calvin J. Lee, Ashish Sharma, Naitik A. Panjwani, Isaac M. Etchells, Elham M. Gholizadeh, Jonathan M. White, Paul E. Shaw, Paul. L. Burn, Jan Behrends, Akshay Rao, David Jones
Summary: Singlet fission (SF) is a potential avenue for enhancing silicon photovoltaic performance. This study describes a molecular engineering approach to increase the energy of diketopyrrolopyrrole derivatives, enabling energy-level requirements for exothermic SF and energy transfer to silicon. The results reveal promising silicon-matched SF materials that could facilitate efficient solar harvesting and energy transfer to silicon photovoltaic cells.
ADVANCED OPTICAL MATERIALS
(2023)
Article
Chemistry, Physical
Lachlan Packman, Neil Mallo, Aaron Raynor, Mile Gao, Mohammad Babazadeh, Hui Jin, David M. Huang, Paul L. Burn, Ian R. Gentle, Paul E. Shaw
Summary: The strategy of using a bulk-heterojunction light-absorbing layer has led to the most efficient organic solar cells. The factors that affect the thin film dielectric constants are still not well understood. In this work, we report an organic semiconductor material that can be solution processed or vacuum evaporated to form good quality thin films and explore its effect on the dielectric constant and other optoelectronic properties.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Article
Chemistry, Physical
M. Chen, P. L. Burn, P. E. Shaw
Summary: Luminescence-based sensing enables sensitive and rapid detection of chemicals, and can be incorporated into portable detectors. While commercially available for explosive detection, there are fewer examples of luminescence-based detection of illicit drugs, requiring further research, particularly in thin film detection.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Review
Materials Science, Multidisciplinary
Abdulaziz S. R. Bati, Yu Lin Zhong, Paul L. Burn, Mohammad Khaja Nazeeruddin, Paul E. Shaw, Munkhbayar Batmunkh
Summary: Organic/inorganic metal halide perovskites have attracted significant attention as key materials for next-generation photovoltaic technologies due to their low cost, high performance, and solution processability. This review outlines notable achievements in photovoltaic-integrated technologies, including tandem solar cells, building-integrated photovoltaics, space applications, energy storage system integration with batteries and supercapacitors, and photovoltaic-driven catalysis. It also discusses the outstanding challenges and future perspectives for the development of these fields and potential next-generation applications.
COMMUNICATIONS MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Ming Chen, Ronan Chu, Jos C. M. Kistemaker, Paul L. Burn, Ian R. Gentle, Paul E. Shaw
Summary: Luminescence-based sensing is an effective method for rapid detection of chemical vapors. Photoinduced electron transfer is used for detecting explosive analytes, while photoinduced hole transfer is used for detecting low electron affinity analytes such as illicit drugs. Semicrystalline sensing films can achieve high sensitivity in detecting these analytes.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Materials Science, Multidisciplinary
Neil Mallo, Shaun McAnally, Ronan Chu, Mohammad Babazadeh, Hui Jin, Paul L. Burn, Ian R. Gentle, Paul E. Shaw
Summary: Bulk heterojunction organic solar cells have made significant progress in power conversion efficiency and stability. Fluorination of non-polymeric donor-acceptor-acceptor-donor organic semiconductors can improve thin film density and electron transport while decreasing the optical frequency dielectric constant.
JOURNAL OF MATERIALS CHEMISTRY C
(2023)
Article
Chemistry, Physical
Abdulaziz S. R. Bati, Purevlkham Myagmarsereejid, Marco Fronzi, Kaicai Fan, Porun Liu, Yu Lin Zhong, Paul L. Burn, Ian R. Gentle, Paul E. Shaw, Munkhbayar Batmunkh
Summary: This article reports a simple solution-based method for the preparation of single-atom nickel-doped BP nanosheets and their application in perovskite solar cells, which leads to improved performance. Perovskite films prepared with the Ni-BP passivation layer have reduced defect densities and improved charge-transfer properties.
Article
Materials Science, Multidisciplinary
Neil Mallo, Shaun McAnally, Ronan Chu, Mohammad Babazadeh, Hui Jin, Paul L. Burn, Ian R. Gentle, Paul E. Shaw
Summary: Research on organic solar cells shows that fluorination can be used to control the low and optical frequency dielectric constants of materials, thereby improving the density of thin films and the transport properties of electrons and holes.
JOURNAL OF MATERIALS CHEMISTRY C
(2023)
Article
Materials Science, Multidisciplinary
Jinfei Dai, Chenjing Zhao, Jie Xu, Hossein Roshan, Hua Dong, Francesco Di Stasio, Fang Yuan, Bo Jiao, Zhaoxin Wu
Summary: In this study, the performance of perovskite nanocrystal light emitting diodes (PNC-LEDs) was enhanced through rational device structure design and the application of high-performance perovskite nanocrystal emitting layers.
ORGANIC ELECTRONICS
(2024)
Article
Materials Science, Multidisciplinary
Jia-Hua Yeh, Suhendro Purbo Prakoso, Leon Lukhas Santoso, Shi-Ju Chen, Bryan Chiang, Ju-Chieh Cheng, Ru-Ning Zhang, Yu-Cheng Chiu
Summary: This study demonstrates the application of a renewable material called dextrin-SMS in the production of electret filters and transistor memory. Dextrin-SMS material can maintain prolonged electrostatic charges and has a relatively wide memory window, making it suitable for the production of biodegradable face masks and green electronics.
ORGANIC ELECTRONICS
(2024)
Article
Materials Science, Multidisciplinary
Ahmad Telfah, Qais M. Al-Bataineh, Ahmad A. Ahmad, Rund Abu-Zurayk, Carlos J. Tavares, Johannes Etzkorn, Farzad Foadian
Summary: Polyacrylic acid complexed with polyaniline (PAA/PANI) composite materials have the potential to form organic mixed ion-electron conductive (OMIEC) films, which can be used in optoelectronic and energy storage applications. The composite films are formed through an acid-base reaction, resulting in strong electrostatic interactions and intermolecular hydrogen bonds between PANI and PAA. The separation of PANI-rich domains from PAA-rich matrix in the composite films is observed. The electrical conductivity of the composite films is higher when the content of PANI is 33 wt%, due to the high ionic-electronic coupling at the interface between phase-separated regions.
ORGANIC ELECTRONICS
(2024)
Article
Materials Science, Multidisciplinary
Min-Chih Hou, Dian Luo, Yu-Ting Huang, Shun-Wei Liu, Chin-Wei Lu, Chih-Hao Chang, Hai-Ching Su
Summary: Light-emitting electrochemical cells (LECs) have great potential for novel emission applications, but their relatively low device efficiency hinders their competitiveness with other emission technologies. A study finds that increasing the concentration of small TiO2 nano-particles in the diffuser film can enhance light extraction and improve the device efficiency of LECs.
ORGANIC ELECTRONICS
(2024)
Article
Materials Science, Multidisciplinary
Qiaoli Niu, Yao Xu, Jun Yang, Wei Hua, Baoxiang Chai, Zequan Zhang, Yuhui Ma, Wenjin Zeng, Ana Flavia Nogueira, Ruidong Xia
Summary: By introducing CPB as a defect passivation agent in the perovskite precursor solution, the optoelectronic properties of perovskite films can be significantly improved and non-radiative carrier recombination can be effectively suppressed. CPB-modified perovskite solar cells exhibit lower trap-state density and stronger carrier migration capability, leading to enhanced power conversion efficiency and stability.
ORGANIC ELECTRONICS
(2024)
Article
Materials Science, Multidisciplinary
Hulya Ozturk Dogan, Fatma Yildirim, Zeynep Orhan, Ali Ben Ahmed, Mostefa Benhaliliba, Sakir Aydogan
Summary: In this study, efficient self-powered visible and UV photodetectors based on hybrid organic-inorganic materials were demonstrated. The photodetectors showed excellent UV detecting capability and good photoresponsivity.
ORGANIC ELECTRONICS
(2024)