英國(guó)皇家化學(xué)會(huì)（RSC）是一個(gè)超過175年歷史的面向全球化學(xué)家的非營(yíng)利會(huì)員制機(jī)構(gòu)，旗下?lián)碛?4種期刊，其中很多在化學(xué)領(lǐng)域有很高影響力。為了進(jìn)一步幫助廣大讀者追蹤科技前沿?zé)狳c(diǎn)，X-MOL團(tuán)隊(duì)與英國(guó)皇家化學(xué)會(huì)合作，推出英國(guó)皇家化學(xué)會(huì)期刊主編推薦的精彩文章快覽，本期文章屬“材料領(lǐng)域”，英文點(diǎn)評(píng)來(lái)自英國(guó)皇家化學(xué)會(huì)期刊的主編。如果大家對(duì)我們的解讀有更多的補(bǔ)充和點(diǎn)評(píng)，歡迎在文末寫評(píng)論發(fā)表您的高見！

Chemical Science （IF: 9.063）

    1. Engineering high reversibility and fast kinetics of Bi nanoflakes by surface modulation for ultrastable nickel–bismuth batteries

    Chem. Sci., 2019, Advance Article

    DOI: 10.1039/C8SC04967J

    Bismuth is a promising anode material but it suffers from poor stability. A team of researchers in China have partially oxidised Bi nanoflakes （NFs） by a one-step surface oxidation approach to greatly improve their reversibility and cycling performance. The partially oxidised Bi NFs exhibit good capacity （0.38 mA h cm-2 at 2 mA cm-2）， good rate capability and high long-term stability even after 20,000 cycles. They constructed an aqueous Ni//Bi battery based on this material with 96% capacity retention after 5000 cycles.

    鉍是一種很有前景的負(fù)極材料，但它的穩(wěn)定性較差。中山大學(xué)和哈爾濱理工大學(xué)的研究人員通過一步表面氧化法將鉍納米片進(jìn)行了部分氧化，大大提高了它們的可逆性和循環(huán)性能。部分氧化的鉍納米片表現(xiàn)出良好的容量（在2 mA cm-2下為0.38 mA h cm-2）、良好的倍率性能和優(yōu)秀的長(zhǎng)期穩(wěn)定性（20000次循環(huán)后幾乎沒有容量衰減）。他們基于該材料構(gòu)建的水性Ni//Bi電池，在5000次循環(huán)后容量保持率可達(dá)96％。

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    2. Rapid room temperature synthesis of red iridium（III） complexes containing a four-membered Ir–S–C–S chelating ring for highly efficient OLEDs with EQE over 30%

    Chem. Sci., 2019, Advance Article

    DOI: 10.1039/C8SC05605F

    A team of scientists in China have developed a method to synthesise red iridium（III） complexes containing a four-membered Ir–S–C–S chelating ring in five minutes at room temperature for use as OLED materials with an EQE over 30%. The complexes were used to make OLEDs with double emissive layers with a maximum brightness over 60,000 cd m-2, a maximum current efficiency of 40.68 cd A-1, a maximum external quantum efficiency （EQEmax） of 30.54%, and an EQE of 26.79% at the practical luminance of 1000 cd m-2.

    南京大學(xué)和中科院長(zhǎng)春應(yīng)化所的科學(xué)家們開發(fā)了一種在室溫下五分鐘內(nèi)合成含有四元Ir-S-C-S螯合環(huán)的紅光銥（III）配合物的方法，該配合物可用作有機(jī)發(fā)光二極管（OLED）材料，外量子效率（EQE）超過了30%。將該配合物用于制備具有雙發(fā)光層的OLED，最大亮度超過60000 cd m-2，最大電流效率為40.68 cd A-1，最大外量子效率（EQEmax）為30.54%，并且在實(shí)際亮度1000cd m-2 時(shí)EQE為26.79%。

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Materials Horizons （IF: 13.183）

    1. Nano-sandwiched metal hexacyanoferrate/graphene hybrid thin films for in-plane asymmetric micro-supercapacitors with ultrahigh energy density

    Mater. Horiz., 2019, Advance Article

    DOI: 10.1039/C9MH00063A

    In-plane micro-supercapacitors （MSCs） hold promising potential for integration into microelectromechanical systems. Here, we design novel hybrid electrode materials to increase the device capacitance and rationally construct asymmetric MSCs to widen the output voltage window for boosting the energy density. The resultant nano-sandwiched electrode with alternately stacked graphene and metal hexacyanoferrate layers is beneficial to take advantage of the two components. Different from conventional asymmetric supercapacitors with two types of electrode materials, the resultant asymmetric MSCs are based on the same type of coordination polymer-related electrode materials, which is favorable for keeping the reversible charge/discharge process during a long cycling lifetime. Thanks to the novel hybrid thin films and asymmetric structure, the achieved in-plane asymmetric MSCs deliver ultrahigh energy density and long cycling stability while showing outstanding mechanical flexibility and integration capability.

    面內(nèi)微型超級(jí)電容器（MSC）在與微電機(jī)系統(tǒng)集成方面具有巨大潛力。本文作者設(shè)計(jì)了一種新穎的混合電極材料來(lái)提高器件的電容，并合理構(gòu)建不對(duì)稱面內(nèi)微型超級(jí)電容器來(lái)擴(kuò)大輸出電壓窗口以提高能量密度。通過交替堆疊層狀的石墨烯和金屬六氰高鐵酸鹽，得到的納米三明治形電極充分體現(xiàn)了這兩種組分的優(yōu)點(diǎn)。與由兩種電極材料組成的常規(guī)不對(duì)稱超級(jí)電容器不同，這里制備的不對(duì)稱面內(nèi)微型超級(jí)電容器基于相同類型的配位聚合物電極材料，這有利于在長(zhǎng)循環(huán)壽命中保持可逆的充電/放電過程。歸功于新穎的混合薄膜和不對(duì)稱結(jié)構(gòu)，這種面內(nèi)不對(duì)稱微型超級(jí)電容器具有超高的能量密度和長(zhǎng)循環(huán)穩(wěn)定性，同時(shí)具有出色的機(jī)械柔性和集成能力。

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    2. A flexible conformable artificial organ-damage memory system towards hazardous gas leakage based on a single organic transistor

    Mater. Horiz., 2019, Advance Article

    DOI: 10.1039/C8MH01577E

    Herein, we developed an effective and facile strategy to realize the gas-controlled memory behavior by operating the organic semiconductors at room temperature. The slow doping/dedoping processes enable the accumulation of the sensing signal towards the single prolonged and the long-term repeated NO2 exposure. As a result, the artificial organ-damage memory system can be fabricated only based on a single organic transistor. This facile device geometry well simulates the inhalation, metabolism, and cumulative organ damage caused due to exposure to a hazardous gas. Good flexibility of the organic semiconductor also helps the artificial electronic system to well conform onto the curved surfaces with almost unchanged memory behavior. Our conformable artificial organ-damage memory system opens up a novel opportunity for simulating human organ damage and exhibits the potential for future wearable health monitoring.

    作者們開發(fā)了一種簡(jiǎn)單有效的策略，通過在室溫下操控有機(jī)半導(dǎo)體來(lái)實(shí)現(xiàn)氣體控制的記憶行為。緩慢的摻雜/去摻雜過程使對(duì)于單次延長(zhǎng)和長(zhǎng)期重復(fù)的NO2暴露的傳感信號(hào)累積，從而，僅使用單個(gè)有機(jī)晶體管就可以制造人造器官損傷記憶系統(tǒng)。這種簡(jiǎn)便的裝置結(jié)構(gòu)能夠很好地模擬由于有害氣體暴露而引起的吸入、代謝和累積的器官損傷。有機(jī)半導(dǎo)體的良好柔性還有助于人造電子系統(tǒng)很好地適應(yīng)彎曲表面，同時(shí)幾乎不會(huì)引起記憶行為的變化。這種順應(yīng)性的人工器官損傷記憶系統(tǒng)為模擬人體器官損傷開辟了新的方向，同時(shí)也表現(xiàn)出了用于未來(lái)可穿戴健康監(jiān)測(cè)應(yīng)用的潛力。

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    3. Radiation-assisted metal ion interference tumor therapy by barium peroxide-based nanoparticles

    Mater. Horiz., 2019, Advance Article

    DOI: 10.1039/C8MH01554F

    Herein, we have developed a novel concept for tumor treatment by taking advantage of the unique biological effects of released metal ions, anions or molecules in biodegradable nanomaterials. In contrast with existing research, this strategy, which we termed ion interference therapy, directly exploits the biotoxicity of inorganic nanoparticles to combat tumors, which makes the designed nanodrugs more intelligent and more biocompatible. Moreover, by focusing on the biological effects of nanomaterials rather than their physicochemical properties and further applying them in disease treatment, this will strengthen the connection between clinical medicine and nanomaterials and rejuvenate the clinical potential of nanomedicine.

    作者們利用生物可降解納米材料可以釋放金屬離子、陰離子或分子的獨(dú)特生物效應(yīng)，發(fā)展了一種新穎的腫瘤治療概念。與現(xiàn)有研究相比，這種被作者稱為“離子干擾療法”的策略直接利用無(wú)機(jī)納米粒子的生物毒性來(lái)對(duì)抗腫瘤，這使得設(shè)計(jì)的納米藥物更加智能化，也更具生物相容性。此外，關(guān)注納米材料的生物效應(yīng)而非物理化學(xué)性質(zhì)，并將其進(jìn)一步應(yīng)用于疾病治療，這將加強(qiáng)臨床醫(yī)學(xué)和納米材料之間的聯(lián)系，也提高了納米醫(yī)學(xué)的臨床應(yīng)用潛力。

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Biomaterials Science （IF: 5.831）

    1. A one-pot modular assembly strategy for triple-play enhanced cytosolic siRNA delivery

    Biomater. Sci., 2019, Advance Article

    DOI:10.1039/C8BM01454J

    The first small interfering RNA （siRNA） has recently been approved by the FDA for therapeutic use. In this paper the authors have developed a novel one pot assembly method, using a copper free click reaction, to fabricate a siRNA delivery system on the surface of the siRNA/liposome complex. The delivery system has 3 distinct functions; charge-reversal, receptor-mediated endocytosis and cell penetrating peptide （CPP）-induced cell penetration. The authors found that the system had improved blood stability, enhanced cytosolic delivery and superior gene silencing efficiency in vivo in mouse models.

    FDA近期批準(zhǔn)了首款用于治療的小干擾RNA（siRNA）藥物。在本文中，Biomater. Sci. 期刊副主編、中國(guó)藥科大學(xué)張燦教授等人報(bào)道了一種新的一鍋組裝法，通過無(wú)需銅參與的點(diǎn)擊反應(yīng)，在siRNA/脂質(zhì)體復(fù)合物的表面上制造siRNA遞送系統(tǒng)。遞送系統(tǒng)有三種不同的功能：電荷逆轉(zhuǎn)、受體介導(dǎo)的胞吞作用和細(xì)胞穿透肽（CPP）誘導(dǎo)的細(xì)胞穿透。作者發(fā)現(xiàn)將該系統(tǒng)用于小鼠模型的體內(nèi)實(shí)驗(yàn)時(shí)，表現(xiàn)出了改善的血液穩(wěn)定性、增強(qiáng)的胞漿遞送和優(yōu)秀的基因沉默效率。

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    2. Magnetic liposomal emodin composite with enhanced killing efficiency against breast cancer

    Biomater. Sci., 2019, Advance Article

    DOI:10.1039/C8BM01530A

    The active natural compound emodin has promising pharmacological properties but has limited use as it is poorly soluble and has poor targeting ability. In this paper the authors developed a magnetic liposomal emodin nanocomposite （MLE） which had superior chemotherapeutic effects （24.1% higher than free emodin） as well as excellent biocompatability. The MLE could be guided with an external magnetic field to accumulate in the tumor region, demonstrated in an in vivo mice model, confirmed with MR and fluorescence imaging.

    活性天然化合物大黃素具有良好的藥理學(xué)性質(zhì)，但由于其溶解性和靶向性較差，使用受到了限制。在本文中，作者開發(fā)了一種磁性脂質(zhì)體大黃素納米復(fù)合材料（MLE），它具有優(yōu)秀的化療效果（比游離大黃素高24.1%）以及優(yōu)異的生物相容性。在小鼠模型體內(nèi)實(shí)驗(yàn)中，通過磁共振和熒光成像證實(shí)，使用外部磁場(chǎng)可以引導(dǎo)MLE聚集在腫瘤區(qū)域。

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