Chinese Chemical Letters

Chinese Chemical Letters 2019 30( 07) Published: 22 July 2019

Reviews

Near-infrared small molecular fluorescent dyes for photothermal therapy

Yisha Chen, Li Li, Weijie Chen, Haiyan Chen, Jun Yin

Chinese Chemical Letters 2019 Vol. 30 (07): 1353-1360 DOI:10.1016/j.cclet.2019.02.003

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This review aims to provide a summary of the progress in fluorescent dyes for photothermal therapy in recent years and it is classified according to the structure of organic molecules including cyanines, phthalocyanines, rhodamine analogues and BODIPYs.

Recent applications of radical cascade reaction in the synthesis of functionalized 1-indenones

Yinli Zhang, Kai Sun, Qiyan Lv, Xiaolan Chen, Lingbo Qu, Bing Yu

Chinese Chemical Letters 2019 Vol. 30 (07): 1361-1368 DOI:10.1016/j.cclet.2019.03.034

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1-Indenones are important scaffolds in natural products, biologically active molecules as well as functional materials. Recently, radical cascade cyclization has emerged as an efficient and powerful strategy for the construction of valuable and versatile functionalized 1-indenones. In this review, the recent advances of this rapidly growing area were summarized. The selected examples have been classified according to the type of reaction substrates such as 1,3-diarylpropynones, 2-alkynylbenzonitriles, arylpropynols, 1,5-enynes and 2-alkynylated bromocinnamates.

Chemical synthesis and structure determination of venom toxins

Bobo Dang

Chinese Chemical Letters 2019 Vol. 30 (07): 1369-1373 DOI:10.1016/j.cclet.2019.03.021

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Venom toxins are receiving growing interests as novel therapeutics and biophysical probes. This review briefly discusses recent advances in the chemical synthesis and structure determination of venom toxins.

Communications

Rhodium(III)-catalyzed intermolecular cyclization of anilines with sulfoxonium ylides toward indoles

Zhihao Shen, Chao Pi, Xiuling Cui, Yangjie Wu

Chinese Chemical Letters 2019 Vol. 30 (07): 1374-1378 DOI:10.1016/j.cclet.2019.01.033

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C2-substituted indoles were efficiently prepared with excellent regio-selectivity from N-phenylpyridin-2-amines and sulfoxonium ylides via cascade reaction of C-H alkylation/nucleophilic cyclization.

Unexpected activated carbon-catalyzed pyrrolo[1,2-a]quinoxalines synthesis in water

Qi Sun, Liyan Liu, Yu Yang, Zhenggen Zha, Zhiyong Wang

Chinese Chemical Letters 2019 Vol. 30 (07): 1379-1382 DOI:10.1016/j.cclet.2019.04.007

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In this manuscript, an efficient method for the synthesis of pyrrolo[1,2-a]quinoxaline derivatives was developed. By virtue of the activated carbon/water system, a facile protocol was established to construct the intramolecular C-N and C-C bond at the same time. Meanwhile, this reaction has a wide substrate scope and good functional group tolerance. All these transformations can be performed smoothly under mild conditions without any transition metal, additive, oxidant and reductant.

Ruthenium(II)-cored supramolecular organic framework-mediated recyclable visible light photoreduction of azides to amines and cascade formation of lactams

Yi-Peng Wu, Meng Yan, Zhong-Zheng Gao, Jun-Li Hou, Hui Wang, Dan-Wei Zhang, Junliang Zhang, Zhan-Ting Li

Chinese Chemical Letters 2019 Vol. 30 (07): 1383-1386 DOI:10.1016/j.cclet.2019.03.056

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Porous[Ru(bpy)₃]²⁺-cored supramolecular metal organic framework can efficiently catalyze visible light photoreduction of various azides to afford amines and, through cascade reactions, lactams.

Pure organic room-temperature phosphorescent N-allylquinolinium salts as anti-counterfeiting materials

Qingxia Xiong, Chao Xu, Nianming Jiao, Xiang Ma, Yanqiang Zhang, Suojiang Zhang

Chinese Chemical Letters 2019 Vol. 30 (07): 1387-1389 DOI:10.1016/j.cclet.2019.04.010

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Pure organic room-temperature phosphorescence (RTP) materials have been attracting much attention recently. Herein, we report a facile approach combining heavy atom effect and external solvent stimuli to realize RTP. N-Allylquinolinium bromide under 365 nm UV exhibited intense green RTP emission with response upon adding chloroform. This interesting phenomenon endowed N-allylquinolinium bromide great potential as an anticounterfeiting material.

Magnetism tuned by intercalation of various metal ions in coordination polymer

Chengfei Wang, Wei Zhang, Wenwu Li, Yuanyuan Zhang, Xiaodong Tang, Ming Hu

Chinese Chemical Letters 2019 Vol. 30 (07): 1390-1392 DOI:10.1016/j.cclet.2019.03.007

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Insertion of various metal ions have changed the ferromagnetic coordination frameworks into paramagnetic, superparamagnetic, or ferromagnetic. The net charge and radius of the ions determined the magnetism of the host frameworks.

Photostable lysosomal imaging of living cell with hyperspectral stimulated Raman scattering microscopy using a probe based on bisarylbutadiyne

Cong Ding, Yage Chen, Haozheng Li, Bingyao Wang, Qi Wei, Huajun Tang, Shaokang Jia, Zhiyong He, Ping Wang, Xiang Zhou

Chinese Chemical Letters 2019 Vol. 30 (07): 1393-1396 DOI:10.1016/j.cclet.2019.03.046

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Lysosome-selective Raman probe, Lyso-BADY, was created with improved Raman signal intensity, stability as well as specificity under the visualization of hyperspectral stimulated Raman scattering (SRS) microscopy. Prolonged exposure to irradiation further proved its photostability and potentiality for continuous imaging.

Biomimetic nanochannel membrane for cascade response of borate and cis-hydroxyl compounds: An IMP logic gate device

Meitao Deng, Meng Yang, Yaqing Xu, Yuqiong Sun, Qing Wang, Jianbo Liu, Jin Huang, Xiaohai Yang, Kemin Wang

Chinese Chemical Letters 2019 Vol. 30 (07): 1397-1400 DOI:10.1016/j.cclet.2019.04.003

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Biomimetic cascade response of borate and cis-hydroxyl compounds in nanochannels, acted as IMP logic gates.

In situ real-time study buckling behavior of boron nitride nanotubes with axial compression by TEM

Guoxin Chen, Huanming Lu, Junfeng Cui, Haitao Yu, Bo Wang, Yan Liu, He Li, Nan Jiang

Chinese Chemical Letters 2019 Vol. 30 (07): 1401-1404 DOI:10.1016/j.cclet.2019.02.024

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The real time analysis structure evolution of BNNT with compression showed that the formation of V-shape in the post-buckling before BNNT fracture was reversible.

Design optimized intermixed phase by tuning polymer-fullerene intercalation for free charge generation

Qiang Zhang, Jiangang Liu, Xinhong Yu, Yanchun Han

Chinese Chemical Letters 2019 Vol. 30 (07): 1405-1409 DOI:10.1016/j.cclet.2019.04.004

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The content of the polymer/PCBM intermixed phase was tuned through the polymer solution conformation by aging. Furthermore, the quantitative relationship between the charge separation and the content of intermixed phase was established.

Aggregation-induced emission enhancement of yellow photoluminescent carbon dots for highly selective detection of environmental and intracellular copper(II) ions

Wenyi Lv, Min Lin, Rongsheng Li, Qianqian Zhang, Hui Liu, Jian Wang, Chengzhi Huang

Chinese Chemical Letters 2019 Vol. 30 (07): 1410-1414 DOI:10.1016/j.cclet.2019.04.011

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Photoluminescent (PL) carbon nanodots (CDs) are prepared through a simple one-step hydrothermal treatment of o-phenylendiamine (OPD), and the as-prepared OPD-CDs show yellow PL emission under the ultraviolet excitation, which can be further enhanced by Cu²⁺ ions owing to Cu²⁺ ions induced aggregation of OPD-CDs through the coordination of Cu²⁺ with amino groups on the surface of OPD-CDs.

A new type of triptycene-based stationary phases with alkylated benzimidazolium cations for gas chromatographic separations

Jun He, Meiling Qi

Chinese Chemical Letters 2019 Vol. 30 (07): 1415-1418 DOI:10.1016/j.cclet.2019.03.008

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The new type of triptycene-based stationary phases with alkylated benzimidazolium cations shows high selectivity towards aromatic isomers.

Novel 1,3,5-thiadiazine-2-thione derivatives containing a hydrazide moiety: Design, synthesis and bioactive evaluation against phytopathogenic fungi in vitro and in vivo

Xiaobin Wang, Xincan Fu, Min Chen, An Wang, Jinghua Yan, Yudong Mei, Mengqi Wang, Chunlong Yang

Chinese Chemical Letters 2019 Vol. 30 (07): 1419-1422 DOI:10.1016/j.cclet.2019.03.038

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A series of novel 1,3,5-thiadiazine-2-thione derivatives bearing a hydrazide moiety were designed, synthesized and evaluated for their biological activities against phytopathogenic fungi. The antifungal bioassays indicated that the title compound 5b impressively displayed the obvious selectivity and specificity aganist Rhizoctonia solani (Rs) in vitro and in vivo. The above researches provide a significant reference for the further structural optimization of 1,3,5-thiadiazine-2-thione derivatives bearing a hydrazide moiety as potential fungicides.

“Dissolution-reassembly” for N-doped hollow micro/meso-carbon spheres with high supercapacitor performance

Juan Du, Lei Liu, Yifeng Yu, Yue Zhang, Aibing Chen

Chinese Chemical Letters 2019 Vol. 30 (07): 1423-1427 DOI:10.1016/j.cclet.2019.03.004

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N-Doped hollow carbon spheres with mesoporous/microporous shells and outstanding performance in supercapacitor has been prepared by “dissolution-reassembly” method.

Hyperbranched polylysine: Synthesis, mechanism and preparation for NIR-absorbing gold nanoparticles

Yiying Ge, Pan Li, Yanfei Guan, Chang-Ming Dong

Chinese Chemical Letters 2019 Vol. 30 (07): 1428-1431 DOI:10.1016/j.cclet.2019.03.009

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The hyperbranched polylysine fluoroborate was synthesized by NH₃BF₄-Lys NCA ROP in triethylamine at 15℃, during which the cyclic dimer mainly initiated ROP as the secondary initiating species. The hyperbranched polylysine can be used as a stabilizer to prepare the NIR-absorbing HPlys@Au NPs.

Oxidative C -H alkynylation of 3,6-dihydro-2H-pyrans

Ran Zhao, Guidong Feng, Xiaodong Xin, Honghao Guan, Jing Hua, Renzhong Wan, Wei Li, Lei Liu

Chinese Chemical Letters 2019 Vol. 30 (07): 1432-1434 DOI:10.1016/j.cclet.2019.03.027

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Current synthesis of α-substituted 3,6-dihydro-2H-pyrans dominantly relies on functional group transformation. Herein, a direct and practical oxidative C-H alkynylation and alkenylation of 3,6-dihydro-2H-pyran skeletons with a range of potassium trifluoroborates is developed. The metal-free process is well tolerated with a wide variety of 3,6-dihydro-2H-pyrans, rapidly providing a library of 2,4-disubstituted 3,6-dihydro-2H-pyrans with diverse patterns of α-functionalities for further diversification and bioactive small molecule identification.

A novel mitochondria-targeting tetrapeptide for subcellular delivery of nanoparticles

Yanhui Sun, Aiyan Zhan, Shuang Zhou, Xiao Kuang, Hongyan Shen, Hongzhuo Liu, Youjun Xu

Chinese Chemical Letters 2019 Vol. 30 (07): 1435-1439 DOI:10.1016/j.cclet.2019.05.001

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A novel mitochdrial-targeting tetrapeptide, RF-2(D-Arg-Dmt-Arg-Phe-NH₂) had been developed, which showed controlled toxicity and excellent protection against gentamicin-induced hair cell damage, and more importantly, exhibited superior guidance towards mitochondrion achieved by its modified nanoparticles.

Two alkynyl functionalized Co(II)-MOFs as fluorescent sensors exhibiting selectivity and sensitivity for Fe³⁺ and nitroaromatic compounds

Yue Li, Xia Wang, Chengyong Xing, Xiurong Zhang, Zelong Liang, Xiaokang Wang, Kai Zhang, Yutong Wang, Di Liu, Weidong Fan, Fangna Dai

Chinese Chemical Letters 2019 Vol. 30 (07): 1440-1444 DOI:10.1016/j.cclet.2019.03.014

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Two alkynyl functionalized 3D frameworks with different structures were successfully synthesized for selective and sensitive detection of Fe³⁺ ions and nitroaromatic compounds through fluorescence quenching.

From interpenetrating polymer networks to hierarchical porous carbons for advanced supercapacitor electrodes

Ling Miao, Xiaoyu Qian, Dazhang Zhu, Ting Chen, Guchuan Ping, Yaokang Lv, Wei Xiong, Yafei Liu, Lihua Gan, Mingxian Liu

Chinese Chemical Letters 2019 Vol. 30 (07): 1445-1449 DOI:10.1016/j.cclet.2019.03.010

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A novel and effective strategy to fabricate hierarchical porous carbons for supercapacitors is developed via in-situ activation of interpenetrating polymer networks obtained from simultaneous polymerization of the monomers for two polymeric networks.

Significant enhancement in water resistance of Pd/Al₂O₃ catalyst for benzene oxidation by Na addition

Shunyu Kang, Meng Wang, Na Zhu, Chunying Wang, Hua Deng, Hong He

Chinese Chemical Letters 2019 Vol. 30 (07): 1450-1454 DOI:10.1016/j.cclet.2019.03.023

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Appropriate Na addition led to the formation of well-dispersed metallic Pd particles, which facilitated oxygen adsorption. Proper Na addition further promoted the transformation of absorbed water into liable surface oxygen species and improved the mobility of the lattice oxygen species, which contributed to enhanced catalytic activity and water resistance.

Sonochemical synthesis of silver nanoparticles coated copper wire for low-temperature solid state bonding on silicon substrate

Qiang Hu, Chen Zhao, Zhejuan Zhang, Jun Guo, Chenlu Yu, Zhuo Sun, Xianqing Piao

Chinese Chemical Letters 2019 Vol. 30 (07): 1455-1459 DOI:10.1016/j.cclet.2019.04.050

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The rapid and efficient preparation of silver-copper wire by sonochemical assisted reduction method for high antioxidant performance and low melting temperature. Good ohmic contact between Ag-Cu wire and Si substrate can be achieved at temperature as low as 320℃.