Article
Chemistry, Multidisciplinary
Peng Wei, Zichao Shen, Xinsu Qin, Peng Zhang, Laju Bu, Qing Chen, Stephan V. Roth, Guanghao Lu
Summary: The study shows that by using a polymer insulator-assisted thermal annealing, the contact resistance of organic field-effect transistors can be significantly reduced. Through an optimized solution process, the conjugated polymer is evenly distributed within the amorphous polymer insulator matrix with low glass transition temperature, resulting in improved contact with gold electrodes. This method is effective for improving charge transport and injection, and can be widely applied to enhance the performance of various conjugated polymers.
Article
Chemistry, Analytical
Seo Young Shin, Mingu Jang, Hyeong Jun Cheon, Seongmoon Go, Hyeonseok Yoon, Mincheol Chang
Summary: Controlling charge transport properties and morphologies of CP films is crucial for the practical application of CP-based OFET sensors. A processing strategy involving SVA and PNs significantly enhanced charge transport and surface-to-volume ratio of CP thin films. The PN2-P3HT films showed improved charge transport and surface-to-volume ratio after SVA, resulting in excellent responsivities and rapid response/recovery times in VOC detection by OFET sensors.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Engineering, Electrical & Electronic
Madison Mooney, Yunfei Wang, Ekaterini Iakovidis, Xiaodan Gu, Simon Rondeau-Gagne
Summary: Organic semiconducting polymers offer good mechanical and optoelectronic properties, with solution processability for cost-effective device fabrication compared to silicon-based electronics. This study incorporates environmentally friendly carbohydrate side chains to enhance processability, and introduces a mild postprocessing treatment for solvent resistance. The environmentally friendly approach improves solubility in eco-friendly solvents without negatively impacting electronic performance.
ACS APPLIED ELECTRONIC MATERIALS
(2022)
Article
Chemistry, Physical
Kamil Awsiuk, Pawel Dabczynski, Mateusz M. Marzec, Jakub Rysz, Ellen Moons, Andrzej Budkowski
Summary: The study investigates the mechanism of rapidly switching different morphologies during coating process using different semiconductor-insulator polymer composites, where voltage-induced doping and doping-dependent solubility of the conjugated polymer can control the composite morphology by changing the semiconductor content, leading to a 40-fold increase in film conductance.
Article
Chemistry, Multidisciplinary
Di Liu, Xuan Yang, Peiyan Chen, Xinling Zhang, GaoYuan Chen, Qiwei Guo, Huan Hou, Yi Li
Summary: This study proposes the design of a linear conjugated polymer by creating a chain polymer connected via bridging covalent bonds in one direction and retaining pi-stacked aromatic columns in its orthogonal direction. Three analogs of linear conjugated polymers with different aromatic cores and bridging groups are prepared. The Oxamide-PDI (perylene diimide) exhibits high crystallinity, wide light absorption, and increased stability, resulting in a remarkable oxygen evolution rate of 5110.25 mu mol g(-1) h(-1) without any cocatalyst. The built-in electric field in Oxamide-PDI enables efficient charge carrier migration and separation.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Physical
Luis Rebollar, Saad Intikhab, Suihao Zhang, Huiqiu Deng, Zhenhua Zeng, Joshua D. Snyder, Maureen H. Tang
Summary: This study assesses the impact of interfacial electric fields on the electrochemical reaction kinetics of hydrogen electrocatalysis. The results suggest that the correlation between pzfc and HER/HOR kinetics may stem more from activation barriers to the reaction elementary steps rather than from electric field effects on solvent dynamics. Researchers propose that surface additives like caffeine may help elucidate the origin behind the slow alkaline HER/HOR kinetics and ways to manipulate it.
JOURNAL OF CATALYSIS
(2021)
Article
Nanoscience & Nanotechnology
Zhaozhang Deng, Hongwei Zhao, Xinxiu Cao, Shaohui Xiong, Gen Li, Jiyong Deng, Hai Yang, Weijie Zhang, Qingquan Liu
Summary: This study developed a molecular dipole control strategy to modulate the built-in electric field (BEF) in polymeric photocatalysts. A series of conjugated microporous polymers (CMPs) with adjustable BEF were designed and prepared. The optimized CMP, CbzCMP-9, exhibited the strongest BEF, leading to remarkable photocatalytic performance in thiocyano chromones and C-3 thiocyanation of indoles.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Multidisciplinary
Chengwei Liu, Ann-Kathrin Steppert, Yazhi Liu, Philipp Weis, Jianyu Hu, Chen Nie, Wen-Cong Xu, Alexander J. C. Kuehne, Si Wu
Summary: Researchers have developed a photo- and thermostable anti-counterfeiting material by using photopatterning and thermal annealing techniques on a photoresponsive conjugated polymer. The stability of the material is achieved through interchain stacking promoted by thermal annealing and the desirable thermal properties endowed by the conjugated structure. This study provides a new strategy for the development of highly stable and secure anti-counterfeiting materials.
ADVANCED MATERIALS
(2023)
Article
Polymer Science
Jing-Jing Wang, Long Ye
Summary: Insulating polymers are widely used in daily life, but have poor electrical conductivity. Conjugated polymers, on the other hand, have excellent electrical properties and versatile applications, making them of great interest. The combination of conjugated and insulating polymers in organic solar cells provides added value and can be used in various materials.
CHINESE JOURNAL OF POLYMER SCIENCE
(2022)
Article
Polymer Science
Justin Neu, Stephanie Samson, Kan Ding, Jeromy James Rech, Harald Ade, Wei You
Summary: This study presents the synthesis and characterization of three conjugated polymers derived from PTQ10 with different oligo(ethylene glycol) (OEG) side chain architectures, aiming to develop derivatives with better green-solvent solubility. It is found that linear OEG side chains do not provide desired solubility, while branched OEG side chains significantly improve solubility. The solid-state morphologies of the OEG-based polymers are similar to PTQ10, and the device performance in bulk heterojunction solar cells varies depending on the OEG side chain structure. PTQ-6O shows comparable power conversion efficiency (PCE) to PTQ10, while PTQ-6bO2 and PTQ-6bO exhibit poorer performances. The presence of an extra carbon in the side chain of PTQ-6bO2 improves its PCE due to enhanced aggregation properties and solid-state morphology.
Article
Materials Science, Multidisciplinary
Nan Li, Yahao Dai, Yang Li, Shilei Dai, Joseph Strzalka, Qi Su, Nickolas De Oliveira, Qingteng Zhang, P. Blake J. St Onge, Simon Rondeau-Gagne, Yunfei Wang, Xiaodan Gu, Jie Xu, Sihong Wang
Summary: Polymer semiconductors have great potential for human-integrated electronics due to their solution processability and mechanical softness. The click-to-polymer (CLIP) synthesis strategy developed by the authors allows for the attachment of diverse functional units to pre-synthesized conjugated-polymer precursors, resulting in functionalized polymers with good charge-carrier mobility. This approach can advance the state of the art by enriching the functional properties of conjugated polymers.
Article
Polymer Science
He-Chun Chou, Wei-Chieh Hsu, Yajing Yang, Kirk S. Schanze, Shyh-Chyang Luo, Chi Chen
Summary: In this study, an optical monitoring system was used to analyze the behavior of polymers during solvent vapor annealing (SVA). It was found that P3HT forms nanowires more easily and quickly than PPE. Surface morphologies examined using atomic force microscopy (AFM) also showed that P3HT has higher solubility in chloroform, leading to superior long-range order.
MACROMOLECULAR CHEMISTRY AND PHYSICS
(2021)
Article
Chemistry, Multidisciplinary
He Wang, Yi Yang, Yuzhuo Zhang, Shumeng Wang, Zhan'ao Tan, Shouke Yan, Lixiang Wang, Jianhui Hou, Bowei Xu
Summary: The development of a universal interlayer material for diverse optoelectronic devices has led to cost reductions and improved device integration. The use of p-pi conjugation in the anode interlayer material PCP-S enables its universal application in organic light-emitting diodes, organic solar cells, and perovskite solar cells.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Review
Nanoscience & Nanotechnology
Seungju Kang, Tae Woong Yoon, Gwan-Yeong Kim, Boseok Kang
Summary: This article provides an overview of the formation strategies and applications of conjugated polymer nanoparticles, along with their corresponding experimental methods. By converting them into nanoparticle dispersions in water or alcohols, the use of toxic solvents can be avoided and application utility can be enhanced.
ACS APPLIED NANO MATERIALS
(2022)
Article
Chemistry, Physical
Yansheng Zhang, Malgorzata Nguyen, Christoph Schnedermann, Scott T. Keene, Ian Jacobs, Akshay Rao, Henning Sirringhaus
Summary: Charge modulation microscopy (CMM) is a method for mapping induced charges in an organic field-effect transistor (OFET). A new implementation of CMM in transmission geometry with camera-based imaging has been developed, resulting in a significant improvement in data acquisition speed while maintaining resolution. The system was demonstrated by measuring the spatial distribution of induced charges in an OFET with polymer blend, achieving high-resolution imaging.
JOURNAL OF CHEMICAL PHYSICS
(2023)
Article
Surgery
Ankita Harijee, Krishnakumar Thankappan, Mohit Sharma, Nagesh Noothanapati NageswaraRao, Tejal Patel, Renjitha Bhaskaran, Manu Raj, Karimassery Ramaiyer Sundaram, Subramania Iyer
Summary: Bilateral hand composite tissue allotransplantation (CTA) offers higher health utility compared to prostheses and amputation in bilateral hand amputees. Through time trade-off method, CTA provides greater quality adjusted life years (QALY) gains over amputation.
ANNALS OF PLASTIC SURGERY
(2021)
Article
Otorhinolaryngology
Nisha Rajrattansingh Akali, Arya Chandrababu Jaya, Deepak Balasubramanian, Subramania Iyer, Krishnakumar Thankappan
Summary: The study utilized islanded facial artery musculo-mucosal (FAMM) flap to reconstruct partial pharyngeal defects after total laryngectomy, showing good surgical outcomes with no complications in swallowing and speech functions observed at 6 months postoperatively.
HEAD AND NECK-JOURNAL FOR THE SCIENCES AND SPECIALTIES OF THE HEAD AND NECK
(2021)
Article
Economics
Krishnakumar Thankappan, Tejal Patel, Krishna Kollamparambil Ajithkumar, Deepak Balasubramanian, Manu Raj, Sujha Subramanian, Subramania Iyer
Summary: This study aimed to map the concerns of Head and Neck Patient Concerns Inventory (PCI) to health utility (HU) index scores on Euroqol-Five Dimensions-Five levels (EQ-5D-5L) for cost-utility estimation. A simplified OLS model based on 'Physical and functional', 'Treatment-related', and 'Psychological, emotional and spiritual well-being' domains was found to be the best fit in the evaluation sample, suitable for studies in low-middle income countries.
EUROPEAN JOURNAL OF HEALTH ECONOMICS
(2022)
Article
Otorhinolaryngology
Manraj Singh, Krishnakumar Thankappan, Deepak Balasubramanian, Vijay Pillai, Vivek Shetty, Vidyabhushan Rangappa, Naveen Hedne Chandrasekhar, Vikram Kekatpure, Moni Abraham Kuriakose, Arvind Krishnamurthy, Arun Mitra, Arun Pattatheyil, Prateek Jain, Subramania Iyer, Narayanan Gopalakrishna Iyer, Narayana Subramaniam
Summary: In this study, we aimed to improve stratification of patients with advanced oral squamous cell carcinoma (OSCC) by identifying predictors of survival. Factors such as perineural invasion, differentiation, and lymphovascular invasion have adverse impacts on survival outcomes.
HEAD AND NECK-JOURNAL FOR THE SCIENCES AND SPECIALTIES OF THE HEAD AND NECK
(2022)
Article
Surgery
Ankita Harijee, Krishnakumar Thankappan, Jimmy Mathew, Mohit Sharma, Subramania Iyer
Summary: This study aimed to evaluate the health utility and its correlation among patients with bilateral hand amputation. The results showed that the EuroQol HU derivative is preferable to the TTO method. Additionally, there was a strong correlation between the Disabilities of Arm, Shoulder and Hand (DASH) scores and health utility, with the DASH score being a good predictor of health utility scores.
JOURNAL OF PLASTIC RECONSTRUCTIVE AND AESTHETIC SURGERY
(2022)
Article
Materials Science, Biomaterials
P. S. Unnikrishnan, Subramania Iyer, V. Manju, C. R. Reshmi, Deepthy Menon, Shantikumar V. Nair, Manitha Nair
Summary: This study investigated the bone formation potential of a nanocomposite fibrous scaffold in mandible defects and compared it with autograft. The results showed that the scaffold promoted quality bone formation and demonstrated better osseointegration after dental implant placement.
BIOMATERIALS ADVANCES
(2022)
Article
Otorhinolaryngology
Lisa Caulley, Antoine Eskander, Weining Yang, Edel Auh, Lydia Cairncross, Nancy L. Cho, Bahar Golbon, Subramania Iyer, Jeffrey C. Liu, Paul J. Lee, Brenessa Lindeman, Charles Meltzer, Nicole Molin, Alessandra Moore, Julia Noel, Halie Nozolino, Jesse Pasternak, Brendon Price, Tim Ramsay, Lars Rolighed, Mirabelle Sajisevi, Arun Sharma, Catherine Sinclair, Meredith Sorensen, Kyung Tae, Alice L. Tang, Gabriel Tsao, Michelle Williams, Sean Wrenn, Monica H. Xing, Mark Zafereo, Brendan C. Stack, Greg Randolph, Louise Davies
Summary: This study analyzed 3368 pathology records from 18 hospitals in 6 countries and found that while the diagnosis of NIFTP was low, the proportion of PTC patients receiving hemithyroidectomy in 2019 increased significantly, indicating some success with strategies aimed at preventing overtreatment of early-stage thyroid cancer.
JAMA OTOLARYNGOLOGY-HEAD & NECK SURGERY
(2022)
Review
Dentistry, Oral Surgery & Medicine
Radhu Raj, Aarya Haridasan Nair, Nitin Anand Krishnan, Deepak Balasubramanian, Subramania Iyer, Krishnakumar Thankappan
Summary: Osteoradionecrosis (ORN) is a serious complication following treatment for head and neck cancer, often requiring surgical resection of the jaw. Surgical trauma, such as dental extractions or implant placement, is a major factor aggravating mandibular ORN. Treatment options range from conservative management to more radical surgical strategies, including hyperbaric oxygen therapy. Preventive approaches include prophylactic dental care and the use of prophylactic antibiotics for post-radiotherapy extractions.
JOURNAL OF MAXILLOFACIAL & ORAL SURGERY
(2022)
Article
Chemistry, Physical
Shameer Ahmed, Gunjan Baijal, Rudrappa Somashekar, Subramania Iyer, Vijayashree Nayak
Summary: Head and neck squamous cell carcinomas, especially oral cancers, are difficult to treat. This study synthesized PEGylated gold nanoparticles and silver nanoparticles and evaluated their toxicity and radiosensitization effect in oral cancer cells. The results showed that gold nanoparticles exhibited a higher radiosensitization effect compared to silver nanoparticles.
RADIATION PHYSICS AND CHEMISTRY
(2022)
Article
Dentistry, Oral Surgery & Medicine
Pramod Subash, P. V. P. Vinanthi, Subramania Iyer, Shibani Nerurkar, Arjun Krishnadas, Sony G. G. Pullan
Summary: The study retrospectively evaluated functional and aesthetic outcomes in patients with disarticulation defects of the mandible treated with both alloplastic temporomandibular joint replacement and microvascular free flap reconstruction.
JOURNAL OF MAXILLOFACIAL & ORAL SURGERY
(2023)
Review
Dentistry, Oral Surgery & Medicine
Subramania Iyer, Janarthanan Ramu, Arjun Krishnadas
Summary: This article discusses the reasons for requesting secondary reconstruction in patients who have completed head and neck cancer treatment, as well as various issues and approaches to secondary reconstruction. Factors such as disease severity, treatment received, and patient's comorbid conditions need to be considered when planning secondary reconstruction. Bony reconstruction can be challenging, especially due to associated soft tissue fibrosis.
JOURNAL OF MAXILLOFACIAL & ORAL SURGERY
(2023)
Article
Dentistry, Oral Surgery & Medicine
Arjun Krishnadas, Subramania Iyer, Deepak Balasubramaniam, Pramod Subash, Narayana Subramaniam, Radhika Kapahtia, Sony Pullan, Janarthanan Ramu
Summary: This paper describes the technique of using virtual surgical planning and stereolithographic models for secondary reconstruction of the maxilla and mandible. Virtual surgical planning has become increasingly important in complex reconstruction, especially in the cases of secondary reconstruction. Through mock surgery, pre-bending of plates, and fabrication of occlusal splints, the treatment plan can be precisely translated to the operating room, reducing surgical time and achieving more predictable results.
JOURNAL OF MAXILLOFACIAL & ORAL SURGERY
(2023)
Review
Dentistry, Oral Surgery & Medicine
Pramod Subash, Shibani A. Nerurkar, Arjun Krishnadas, Vinanthi Vinay, Subramania Iyer, V. Manju
Summary: Mandibular continuity defects commonly occur after tumor resection, osteomyelitis, or maxillofacial trauma. Various methods can be used for reconstruction, including bridging reconstruction plates, modular endoprostheses, bone grafting, and tissue engineering bone transfer. In recent years, patient-specific implants (PSI) have been used as an alternative to microvascular bone flap reconstruction. This article discusses the current literature on PSI, indications for "PSI only" mandibular reconstruction, and proposes guidelines for safe practice.
JOURNAL OF MAXILLOFACIAL & ORAL SURGERY
(2023)
Article
Surgery
Anna Serene Babu, R. Rashmi, V. Manju, Pramod Subash, Arjun Krishnadas, Manitha Nair, Subramania Iyer
Summary: This article discusses the importance of dental implant placement and prosthetic rehabilitation, and analyzes the limitations and shortcomings of existing treatment methods. The need for a synthetic biomaterial for dental bone regeneration is highlighted. The authors have developed a biomimetic, mechanically stable, and biodegradable nanocomposite and plan to conduct a clinical trial to evaluate its safety and efficacy in dental bone regeneration and implant integration.
INTERNATIONAL JOURNAL OF SURGERY PROTOCOLS
(2023)
Article
Oncology
Yogesh Dokhe, Krishnakumar Thankappan, Ridhi Sood, Arya Chandrababu Jaya, Deepak Balasubramanian, Shilpa Chatni, Bibitha Kizhakkevalappil Babu, Sajith Babu, Swapna Sebastian, Shaji Thomas, Paul Sebastian, Subramania Iyer
Summary: The study aimed to develop a speech intelligibility tool in Malayalam and validate its reliability and validity in oral cancer patients. The tool showed high internal consistency, good agreement among raters, strong correlation with English passages, and expected differences between treatment groups, proving its reliability and validity for perceptual evaluation of speech intelligibility in oral cancer patients.
INDIAN JOURNAL OF SURGICAL ONCOLOGY
(2021)
