Bulletin of the Chemical Society of Japan最新文献

{"title":"Materials Chemistry for Metal Halide Perovskite Photovoltaics","authors":"Tomoya Nakamura, Yoshio Kondo, Noboru Ohashi, Chihiro Sakamoto, Akio Hasegawa, Shuaifeng Hu, Minh Anh Truong, R. Murdey, Yoshihiko Kanemitsu, A. Wakamiya","doi":"10.1093/bulcsj/uoad025","DOIUrl":"https://doi.org/10.1093/bulcsj/uoad025","url":null,"abstract":"\u0000 Metal halide perovskite semiconductors are excellent materials for next-generation solar cells. As a result of research and development all over the world, the photoelectric conversion efficiency for single-cell devices has rapidly improved to over 26% (as of July 2023), while the record efficiency for silicon-on-perovskite tandem devices currently stands at 33.7% (reported in May 2023). Materials chemistry has made many important contributions toward these remarkable results. In this account, we will introduce our achievements in these areas of material chemistry research for improving the performance of perovskite photovoltaics, including the development of high-purity precursor materials, and precursor inks tailored for large-area printed perovskite films. Studies of the nucleation and crystallization process, including simulations, have led to the reliable fabrication of high-quality perovskite films. Diverse new charge collection materials, as well as compounds to effectively modify the perovskite surfaces, have improved solar cell performance.","PeriodicalId":9511,"journal":{"name":"Bulletin of the Chemical Society of Japan","volume":"30 3","pages":""},"PeriodicalIF":4.0,"publicationDate":"2024-01-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139448649","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Linear Dichroism Measurement of Geomagnetic Orientation of Magnetic Nanoparticles","authors":"Hitoshi Watarai","doi":"10.1093/bulcsj/uoad026","DOIUrl":"https://doi.org/10.1093/bulcsj/uoad026","url":null,"abstract":"\u0000 The magnetic orientation of iron oxide magnetic nanoparticles (MNPs) in the dried and aqueous dispersion samples was investigated under weak magnetic fields down to the geomagnetic field by the linear dichroism measurements. The geomagnetic orientation of MNPs was observed when the primary MNPs in dispersions made the agglomerates with a magnetic moment about ten times larger than that of the primary particle.","PeriodicalId":9511,"journal":{"name":"Bulletin of the Chemical Society of Japan","volume":"45 24","pages":""},"PeriodicalIF":4.0,"publicationDate":"2024-01-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139385021","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"La(III)-Catalyzed Depolymerization of Poly(L-Lactic Acid) Yielding Chiral Lactates","authors":"Natsumi Kobayashi, Nobuyuki Komine, Kotohiro Nomura, Hiroshi Hirano, Masafumi Hirano","doi":"10.1246/bcsj.20230183","DOIUrl":"https://doi.org/10.1246/bcsj.20230183","url":null,"abstract":"Bulletin of the Chemical Society of Japan, Volume 96, Issue 12, Page 1324-1330, December 2023. <br/>","PeriodicalId":9511,"journal":{"name":"Bulletin of the Chemical Society of Japan","volume":"33 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2023-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138632284","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Mechanistic Studies on Oxygen-Insertion into Osmium(III)–Carbon Bond via High-Valent Oxido-Osmium(V) Complex","authors":"Hideki Sugimoto, Kurumi Aoki, Shinobu Itoh","doi":"10.1246/bcsj.20230213","DOIUrl":"https://doi.org/10.1246/bcsj.20230213","url":null,"abstract":"Bulletin of the Chemical Society of Japan, Volume 96, Issue 11, Page 1310-1315, November 2023. <br/>","PeriodicalId":9511,"journal":{"name":"Bulletin of the Chemical Society of Japan","volume":"10 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2023-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138515505","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Structural and Magnetic Properties of the B-Site-Ordered Double Perovskites Ln2NiTiO6 (Ln = La, Pr, and Nd)","authors":"Masato Goto, Masato Okazaki, Yuichi Shimakawa","doi":"10.1246/bcsj.20230154","DOIUrl":"https://doi.org/10.1246/bcsj.20230154","url":null,"abstract":"Bulletin of the Chemical Society of Japan, Volume 96, Issue 11, Page 1269-1273, November 2023. <br/>","PeriodicalId":9511,"journal":{"name":"Bulletin of the Chemical Society of Japan","volume":"20 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2023-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138515482","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Correlation Between Attendance and Performance of Undergraduate Medical Students in Otorhinolaryngology: A Retrospective Cohort Study.","authors":"Ajeet Kumar Khilnani","doi":"10.1007/s12070-023-03995-9","DOIUrl":"10.1007/s12070-023-03995-9","url":null,"abstract":"<p><strong>Introduction: </strong>Technology has changed the dynamics of teaching and learning any subject. More emphasis is being laid on e-learning and self-directed learning. In this scenario, there is a rising doubt whether the physical attendance of students in theory lectures and clinical postings is at all important. Various studies have been conducted in different subjects to find a relation between outcome and attendance. However, we could not find any study done in Otorhinolaryngology. Hence, this study was conducted with the aim to know the correlation between attendance and performance for Otorhinolaryngology undergraduate students.</p><p><strong>Methodology: </strong>This is a retrospective cohort study carried out in the Otorhinolaryngology Department of a tertiary care teaching hospital of western Gujarat. The attendance (theory and clinics, biometrically fetched), internal theory examination marks (out of 40), and internal practical examination marks (out of 40) of a single batch students were obtained from the academic records and analyzed using Microsoft Excel sheet.</p><p><strong>Results: </strong>Out of 158 students, data of 151 students was analyzed in this study (7 students were absent on the day of examination). 76 students were boys and 75 girls. The combined (theory and clinics) average attendance of girls was 88.37%, as compared to 78.37% for boys (p < 0.0001). Out of 80 (40 for theory and 40 for clinics), girls got an average of 37.12 marks as compared to 30.89 for boys (p < 0.0001). There was a positive and significant correlation between marks obtained and attendance percentage for total students as well as for boys and girls separately.</p><p><strong>Conclusion: </strong>There is a positive and significant correlation between attendance percentage and marks obtained, both for theory and clinics, for Otorhinolaryngology undergraduate medical students.</p>","PeriodicalId":9511,"journal":{"name":"Bulletin of the Chemical Society of Japan","volume":"73 1","pages":"3349-3352"},"PeriodicalIF":3.3,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10646120/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88148042","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Carotid Artery Resection and Reconstruction due to Benign and Malignant Head and Neck Tumors.","authors":"Kuauhyama Luna-Ortiz, Irvint Joel Bautista-Pérez, Zelik Luna-Peteuil, Humberto J Martinez-Hernandez","doi":"10.1007/s12070-023-04068-7","DOIUrl":"10.1007/s12070-023-04068-7","url":null,"abstract":"<p><strong>Objective: </strong>Carotid resection for head and neck cancer is rare, and serious complications may arise since such cancer is frequently detected in advanced stages. The objective is to describe nine cases of carotid artery resection and reconstruction due to tumor invasion.</p><p><strong>Methods: </strong>The clinical records of nine patients who underwent carotid resection and reconstruction at our hospital were retrospectively reviewed. Carotid body tumors were evaluated with the aid of a vascular team in case carotid resection was necessary at the time of surgery. CT angiography to determine the status of the circle of Willis was performed in all patients who might undergo carotid resection and reconstruction in case of failure to restore cerebral blood flow and thus reduce possible sequelae due to ligation.</p><p><strong>Results: </strong>Of nine patients, 6 had carotid body tumors, 1 had a thyroid tumor of conglomerate lymph nodes, 1 had a larynx tumor of conglomerate lymph nodes, and 1 had a myofibroblastic tumor. There were no intraoperative cerebrovascular accidents. One patient (11.1%) had a cerebrovascular accident secondary to carotid hematoma in the intermediate postoperative period that required vascular graft removal. One patient (11.1%) died seven days after surgery following an ischemic cerebrovascular accident. Eight patients remain asymptomatic, and 1 patient with recurrence and metastasis.</p><p><strong>Conclusions: </strong>Carotid resection remains a controversial issue in the treatment of advanced head and neck cancer. However, carotid resection and reconstruction are required for disease control, and complications such as thrombosis or vascular accidents may arise. Fortunately, this is a rare condition. We recommend carotid reconstruction for all patients in whom resection is required for tumor control. Ligation should be a last resort, as seen in the management of one of our patients.</p>","PeriodicalId":9511,"journal":{"name":"Bulletin of the Chemical Society of Japan","volume":"88 1","pages":"4216-4222"},"PeriodicalIF":3.3,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10645706/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88116903","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Immunoglobulin G4-Related Lung Disease with Waxing and Waning Pulmonary Infiltrates: A Case Report.","authors":"John Baek, Jongmin Park, Byunggeon Park, Jae-Kwang Lim, Chun Geun Lim, An Na Seo","doi":"10.3348/jksr.2022.0172","DOIUrl":"10.3348/jksr.2022.0172","url":null,"abstract":"<p><p>Immunoglobulin G4 (IgG4)-related lung disease can have various clinical courses. To our knowledge, reports of IgG4-related lung disease with waxing and waning pulmonary infiltrates only are very rare. A few lung nodules and ground glass opacities were incidentally found in a pre-operative evaluation in a 36-year-old female. The lung lesions showed waxing and waning in the follow-up chest CT. She underwent a surgical biopsy, and IgG4-related lung disease was confirmed.</p>","PeriodicalId":9511,"journal":{"name":"Bulletin of the Chemical Society of Japan","volume":"41 1","pages":"1373-1377"},"PeriodicalIF":0.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10721417/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88232013","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Chemical Structure Evaluations of Amine Hardeners to Ensure and Predict the Performance of Wet Adhesion of Epoxies","authors":"Yasuyuki Nakamura, Yusuke Hibi, Kimiyoshi Naito, Norie Yamamoto, Misato Hanamura","doi":"10.1246/bcsj.20230218","DOIUrl":"https://doi.org/10.1246/bcsj.20230218","url":null,"abstract":"","PeriodicalId":9511,"journal":{"name":"Bulletin of the Chemical Society of Japan","volume":"66 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135824050","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"<i>N</i>-Borane-Substituted Cyclic Phosphine Imides (BCPIs)","authors":"Shun Nagai, Takaya Hinogami, Sensuke Ogoshi, Yoichi Hoshimoto","doi":"10.1246/bcsj.20230228","DOIUrl":"https://doi.org/10.1246/bcsj.20230228","url":null,"abstract":"Phosphine imides are ubiquitous nucleophiles/Lewis bases in modern organic chemistry. The introduction of unexplored substituents on the phosphine imidoyl nitrogen and/or phosphorus atoms should facilitate the discovery of unprecedented utility for phosphine imides. Herein, we have designed and prepared a novel class of phosphine imides known as N -borane-substituted cyclic phosphine imides (BCPIs). Experimental and theoretical analyses of the electronic structure of BCPIs demonstrate the existence of substantial negative hyperconjugation between the nitrogen and the phosphorus atoms. Given a characteristic nucleophilic/Lewis basic reactivity of BCPIs, we represent the first experimental demonstration that a  5 -oxazaphosphetane species is a key intermediate in the transformation of CO 2 using phosphine imides. Moreover, although it has been previously considered unlikely, the spontaneous heterolysis of a B ‒ Cl bond in a BCPI-coordinated chloroborane has been directly observed, suggesting that such process is a plausible key step in the Lewis acid-promoted generation of borenium species from chloroboranes. These results thus provide evidence of two species that have been missing in contemporary organic chemistry. Graphical Abstract","PeriodicalId":9511,"journal":{"name":"Bulletin of the Chemical Society of Japan","volume":"74 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135824051","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}