Bulletin of the Chemical Society of Japan最新文献

英文中文

Carotid Artery Resection and Reconstruction due to Benign and Malignant Head and Neck Tumors. 头颈部良恶性肿瘤的颈动脉切除与重建术。

IF 3.3 3区化学 Q2 CHEMISTRY, MULTIDISCIPLINARY

Bulletin of the Chemical Society of Japan

Pub Date : 2023-12-01 Epub Date: 2023-07-17 DOI: 10.1007/s12070-023-04068-7

Kuauhyama Luna-Ortiz, Irvint Joel Bautista-Pérez, Zelik Luna-Peteuil, Humberto J Martinez-Hernandez

Objective: 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.

Methods: 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.

Results: 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.

Conclusions: 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.

目的:颈动脉切除术治疗头颈癌的方法比较少见，由于头颈癌多在晚期被发现，可能会出现严重的并发症。目的是描述9例因肿瘤侵袭而切除和重建颈动脉的病例。方法:回顾性分析我院9例颈动脉切除术重建患者的临床资料。如果手术时需要切除颈动脉，则在血管小组的帮助下对颈动脉体肿瘤进行评估。对于不能恢复脑血流，可能行颈动脉切除术重建的患者，均行CT血管造影，确定Willis环的状态，以减少结扎可能带来的后遗症。结果:9例患者中颈动脉体肿瘤6例，甲状腺丛状淋巴结肿瘤1例，喉丛状淋巴结肿瘤1例，肌成纤维细胞肿瘤1例。术中无脑血管意外。1例(11.1%)患者在术后中期发生颈动脉血肿继发脑血管意外，需要进行血管移植物切除。1例(11.1%)因缺血性脑血管意外术后7天死亡。8例无症状，1例复发转移。结论:在晚期头颈癌的治疗中，颈动脉切除术仍然是一个有争议的问题。然而，为了控制疾病，需要进行颈动脉切除术和重建，并且可能出现血栓形成或血管意外等并发症。幸运的是，这是一种罕见的情况。我们建议所有需要切除以控制肿瘤的患者进行颈动脉重建。结扎应该是最后的手段，正如我们对一位病人的处理所看到的那样。

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引用次数: 0

Immunoglobulin G4-Related Lung Disease with Waxing and Waning Pulmonary Infiltrates: A Case Report. 与免疫球蛋白 G4 相关的肺部疾病伴有起伏不定的肺部浸润：病例报告

3区化学 Q2 CHEMISTRY, MULTIDISCIPLINARY

Bulletin of the Chemical Society of Japan

Pub Date : 2023-11-01 Epub Date: 2023-08-09 DOI: 10.3348/jksr.2022.0172

John Baek, Jongmin Park, Byunggeon Park, Jae-Kwang Lim, Chun Geun Lim, An Na Seo

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.

免疫球蛋白 G4（IgG4）相关肺病的临床表现多种多样。据我们所知，IgG4 相关肺病仅伴有肺部浸润的消长的报道非常罕见。一名 36 岁的女性在术前评估中偶然发现了几个肺结节和磨玻璃不透明。在随访的胸部 CT 中，肺部病变呈现出消退的趋势。她接受了手术活检，证实了 IgG4 相关肺病。

引用次数: 0

Chemical Structure Evaluations of Amine Hardeners to Ensure and Predict the Performance of Wet Adhesion of Epoxies 胺类硬化剂的化学结构评价以保证和预测环氧树脂的湿粘接性能

3区化学 Q2 CHEMISTRY, MULTIDISCIPLINARY

Bulletin of the Chemical Society of Japan

Pub Date : 2023-10-18 DOI: 10.1246/bcsj.20230218

Yasuyuki Nakamura, Yusuke Hibi, Kimiyoshi Naito, Norie Yamamoto, Misato Hanamura

引用次数: 0

N-Borane-Substituted Cyclic Phosphine Imides (BCPIs) n -硼烷取代环膦亚胺(BCPIs)

3区化学 Q2 CHEMISTRY, MULTIDISCIPLINARY

Bulletin of the Chemical Society of Japan

Pub Date : 2023-10-18 DOI: 10.1246/bcsj.20230228

Shun Nagai, Takaya Hinogami, Sensuke Ogoshi, Yoichi Hoshimoto

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

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引用次数: 0

Efficient Method for the Preparation of Ozonides Under Dry Conditions 在干燥条件下制备臭氧化物的有效方法

3区化学 Q2 CHEMISTRY, MULTIDISCIPLINARY

Bulletin of the Chemical Society of Japan

Pub Date : 2023-10-18 DOI: 10.1246/bcsj.20230195

Mohamed R. El-kholany, Nana Kishimoto, Kenta Tanaka, Hiroyoshi Takamura, Isao Kadota

引用次数: 0

Highly Functional Acyclic Xeno Nucleic Acids 高功能无环Xeno核酸

3区化学 Q2 CHEMISTRY, MULTIDISCIPLINARY

Bulletin of the Chemical Society of Japan

Pub Date : 2023-10-15 DOI: 10.1246/bcsj.20230188

Keiji Murayama, Hikari Okita, Hiroyuki Asanuma

引用次数: 0

Freeze-Concentrated Layers as a Unique Field for the Formation of Hydrogels 冷冻浓缩层作为水凝胶形成的独特领域

3区化学 Q2 CHEMISTRY, MULTIDISCIPLINARY

Bulletin of the Chemical Society of Japan

Pub Date : 2023-10-15 DOI: 10.1246/bcsj.20230146

Yurina Sekine, Takuya Nankawa

The phase separation of ice crystals and solutes and bound water that occurs during freezing can be used as a reaction field to control a hierarchical structure of hydrogels. Here, we present a study of carboxymethyl cellulose nanofiber (CMCF) hydrogels formed using solid-quasi liquid phase separation. CMCF hydrogels were formed simply by adding citric acid to frozen CMCF and thawing the mixture. The compressive strength of the freeze crosslinked CMCF was 200,000 times higher than that of CMCF hydrogel formed by a conventional crosslinking method. It was found that rearrangement of CMCF structures via hydrogen bonding proceeds in the freeze concentration layer before the ice crystals melt. Under freeze concentration, CMCF and bound water are confined at high concentrations. The crosslinking reaction in such a unique space contributed to the formation of CMCF hydrogel with high mechanical strength. We discuss the gelation behavior and properties of freeze crosslinked CMCF hydrogels and their applications. The phase separation of ice crystals and solutes and bound water that occurs during freezing can be used as a reaction field to form structurally ordered hydrogels. This paper presents a study of freeze-crosslinked carboxymethyl cellulose nanofiber (CMCF) hydrogels with high mechanical strength formed using the solid-quasi liquid phase separation.

冰晶、溶质和结合水在冻结过程中的相分离可以作为控制水凝胶分层结构的反应场。本文研究了采用固-准液相分离制备羧甲基纤维素纳米纤维水凝胶。只需将柠檬酸加入冷冻的CMCF中并将混合物解冻即可形成CMCF水凝胶。冷冻交联CMCF水凝胶的抗压强度比常规交联方法制备的CMCF水凝胶高20万倍。研究发现，在冰晶融化前，CMCF结构通过氢键重排发生在冻结浓度层。在冷冻浓度下，CMCF和结合水在高浓度下被限制。在这样一个独特的空间内进行交联反应，形成了具有高机械强度的CMCF水凝胶。讨论了冷冻交联CMCF水凝胶的凝胶行为和性质及其应用。冰晶、溶质和结合水在冻结过程中发生的相分离可以作为反应场形成结构有序的水凝胶。研究了采用固-准液相分离法制备高机械强度的冷冻交联羧甲基纤维素纳米纤维水凝胶。

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引用次数: 0

Metal-Organodiphosphonate Chemistry: Hydrothermal Syntheses and Structures of Two Novel Copper(II) Coordination Polymers with o-Xylylenediphosphonic Acid and 4,4′-Bipyridine Ligands 金属-有机二膦酸盐化学:水热合成和两种新型铜(II)配位聚合物与邻二甲苯二膦酸和4,4 ' -联吡啶配体的结构

3区化学 Q2 CHEMISTRY, MULTIDISCIPLINARY

Bulletin of the Chemical Society of Japan

Pub Date : 2023-10-15 DOI: 10.1246/bcsj.20230160

Burak Ay, Rina Takano, Takayuki Ishida

引用次数: 0

Sublimable Surfactant for Carbon Nanotube Dispersion: Effect of the Length of 10-n-Alkyl Side Chains of Flavin on Sublimation 用于碳纳米管分散的可升华表面活性剂:黄素10-n-烷基侧链长度对升华的影响

3区化学 Q2 CHEMISTRY, MULTIDISCIPLINARY

Bulletin of the Chemical Society of Japan

Pub Date : 2023-10-14 DOI: 10.1246/bcsj.20230204

Yuichi Kato, Takushi Sugino

We investigated the sublimation properties of 10-n-alkyl side chains of flavins (n = 4–9, and 12) to address the issue of surfactant residue in single-walled carbon nanotubes (SWNTs). Thermogravimetric analysis under vacuum indicated that the 10-octyl-alkyl side chain of flavin sublimated at a lower temperature than the other flavins, with a saturation vapor pressure of 0.1 Pa at 200 °C. This allowed sublimation without the competing thermal reaction. Therefore, the 10-octyl-alkyl side chain of flavin is a surfactant that can separate and disperse semiconducting SWNTs for the effective utilization of their electrical properties. Moreover, it can be subsequently removed via sublimation. The flavin containing an octyl-alkyl chain (10-octyl-7,8-dimethyl-10H-benzo[g]-pteridine-2,4-dione) sublimated with a saturation vapor pressure of 0.1 Pa at 200 °C. This allowed sublimation without the competing thermal reaction. Moreover, the flavin with octyl-alkyl chain is a surfactant that can separate and disperse semiconducting SWNTs for the effective utilization of their electrical properties.

为了解决单壁碳纳米管(SWNTs)中表面活性剂残留的问题，研究了黄素10-n-烷基侧链(n = 4-9和12)的升华特性。真空热重分析表明，黄素的10-辛烷基侧链升华温度低于其他黄素，200℃时饱和蒸汽压为0.1 Pa。这使得升华过程没有热反应的竞争。因此，黄素的10-辛烷基侧链是一种表面活性剂，可以分离和分散半导体单壁碳纳米管，从而有效地利用其电学性质。此外，它可以随后通过升华去除。含有辛基-烷基链的黄素(10-辛基-7,8-二甲基- 10h -苯并[g]-蝶啶-2,4-二酮)在200℃下以0.1 Pa的饱和蒸汽压升华。这使得升华过程没有热反应的竞争。此外，具有辛烷基链的黄素是一种表面活性剂，可以分离和分散半导体单壁碳纳米管，从而有效地利用其电性能。

引用次数: 0

Bright Red-color Luminescence from Ag−In−Ga−S-based Quantum Dots with the introduction of Copper 引入铜的Ag−In−Ga−基量子点的亮红色发光

3区化学 Q2 CHEMISTRY, MULTIDISCIPLINARY

Bulletin of the Chemical Society of Japan

Pub Date : 2023-10-11 DOI: 10.1246/bcsj.20230216

Taro Uematsu, Navapat Krobkrong, Kenichiro Asai, Genichi Motomura, Yoshihide Fujisaki, Tsukasa Torimoto, Susumu Kuwabata

This study presents cadmium-free, red-emission quantum dots (QDs) synthesized by incorporating Cu into silver indium gallium sulfide/gallium sulfide (Ag–In–Ga–S/Ga–S) core/shell QDs. By using a previous technique, in which the original Ag–In–Ga–S/Ga–S core/shell QDs exhibiting band-edge photoluminescence (PL) were improved to achieve a narrower emission and facile synthesis, we injected a mixture of Cu and Ag sources into a heated solution containing In, Ga, and S sources. This resulted in the formation of Ag–Cu–In–Ga–S quinary QDs without any precipitation. After being coated with a Ga–S shell, these QDs exhibit a red-colored PL with a spectral full-width at half maximum of 55–60 nm. Although the PL wavelength was responsive to changes in In/Ga ratios, it was unaffected by variations in Cu/Ag ratios due to the transition between conduction band electrons and holes localized at Cu cites. Notably, the electroluminescence device exhibited high-purity red light that satisfies the recommendation ITU-R BT.2020 standard. Cadmium-free Ag–Cu–In–Ga–S/Ga–S core/shell quantum dots were synthesized by a scalable method and red emission was obtained from a free-to-bound transition via Cu-related localized states. The emission wavelength was controlled by the In/Ga ratio, which allowed the fabrication of high-purity red electroluminescence in compliance with the ITU-R BT.2020 standard.

本文研究了将Cu加入到银铟硫化镓/硫化镓(Ag-In-Ga-S / Ga-S)核壳量子点中合成的无镉红发射量子点(QDs)。我们利用先前的技术，将原始的Ag - in - Ga - S/Ga - S核/壳量子点改进为具有带边光致发光(PL)，以实现更窄的发射和更容易的合成，将Cu和Ag源的混合物注入含有in, Ga和S源的加热溶液中。这导致在没有任何沉淀的情况下形成Ag-Cu-In-Ga-S五量子点。经Ga-S壳层包覆后，这些量子点呈现出红色PL，光谱全宽度最大为55 ~ 60nm。虽然PL波长对in /Ga比的变化有响应，但由于导带电子和Cu城空穴之间的跃迁，它不受Cu/Ag比变化的影响。值得注意的是，该电致发光装置显示出符合ITU-R BT.2020推荐标准的高纯度红光。采用可扩展方法合成了无镉Ag-Cu-In-Ga-S / Ga-S核壳量子点，并通过cu相关局域态在自由键跃迁中获得红色发射。发射波长由In/Ga比值控制，制备出符合ITU-R BT.2020标准的高纯度红色电致发光材料。

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