Chemical Synthesis最新文献_第7页

Luminescent alkynylplatinum(II) terpyridine-containing conjugated polymers: synthesis, characterization and photophysical studies 发光炔基铂(II)三吡啶共轭聚合物:合成、表征及光物理研究

Chemical Synthesis Pub Date : 1900-01-01 DOI: 10.20517/cs.2022.43

He Cheng, V. Yam

{"title":"Luminescent alkynylplatinum(II) terpyridine-containing conjugated polymers: synthesis, characterization and photophysical studies","authors":"He Cheng, V. Yam","doi":"10.20517/cs.2022.43","DOIUrl":"https://doi.org/10.20517/cs.2022.43","url":null,"abstract":"A series of alkynylplatinum(II) terpyridine complexes and alkynylplatinum(II) terpyridine-containing conjugated polymers with different polymer backbones has been synthesized, and their spectroscopic properties and Förster resonance energy transfer (FRET) processes has been investigated. The platinum(II)-containing polymers exhibit dual emissive features with emission maxima at ca. 416-465 nm and ca. 671-673 nm, which are assigned to be originated from singlet intraligand (1IL) excited states from the polymer backbone and triplet metal-metal-to-ligand charge transfer (3MMLCT) excited states from the platinum(II) pendants, respectively. The Förster radii (R0) of the platinum(II)-containing conjugated polymers have been determined, and their distinctive thermo-responsive luminescence changes have also been observed. The present work has demonstrated the utilization of “click” reaction for the preparation of platinum(II)-containing conjugated polymers, which show unique photophysical and spectroscopic properties. Through the judicious design, this type of platinum(II)-containing polymer is found to be sensitive to temperature, resulting in ratiometric emission changes. This study has provided valuable insights into the preparation of metal-containing polymeric systems for different applications.","PeriodicalId":381136,"journal":{"name":"Chemical Synthesis","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121177112","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Bioinspired nucleic acid-based dynamic networks for signal dynamics 基于生物启发核酸的信号动力学动态网络

Chemical Synthesis Pub Date : 1900-01-01 DOI: 10.20517/cs.2023.15

Rui Zhong, Lin Yi, Xiarui Wang, W. Shu, Liang Yue

{"title":"Bioinspired nucleic acid-based dynamic networks for signal dynamics","authors":"Rui Zhong, Lin Yi, Xiarui Wang, W. Shu, Liang Yue","doi":"10.20517/cs.2023.15","DOIUrl":"https://doi.org/10.20517/cs.2023.15","url":null,"abstract":"Signaling dynamic networks in living systems determine the conversion of environmental information into biological activities. Systems chemistry, focusing on studying complex chemical systems, promotes the connections between chemistry and biology and provides a new way to mimic these signaling dynamic processes by designing artificial networks and understanding their emerging properties and functions that are absent in isolated molecules. Nucleic acids, while relatively simple in their design and synthesis, encode rich structural and functional information in their base sequence, which makes them an ideal building block for constructing complex dynamic networks that can mimic those in living systems. This review briefly introduces nucleic acid-based dynamic networks that can mimic natural signaling dynamic processes. We summarize how the nucleic acid-based dynamic networks are utilized to mimic relatively simple biological transformations, such as feedback and feedforward, which act as sub-networks to produce complex dynamic behaviors upon collective integration. We also emphasize the recent development of far-from-equilibrium networks, which are designed for converting the spatiotemporal signal and coupling with the downstream systems to achieve different functionalities and applications, including temporary nanostructure and patterns, programmed catalysis, and more, using nucleic acid-based dynamic networks. We also address the challenges of developing nucleic acid-based dynamic networks by directed evolution, operating complex networks under confinement conditions, and integrating multiplex networks into cell-like containments aiming to create protocells with living features.","PeriodicalId":381136,"journal":{"name":"Chemical Synthesis","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121662813","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Recent advances in shape selectivity of MFI zeolite and its effect on the catalytic performance MFI分子筛的形状选择性及其对催化性能的影响研究进展

Chemical Synthesis Pub Date : 1900-01-01 DOI: 10.20517/cs.2022.31

Lan Zhang, Ning Liu, Chengna Dai, Ruinian Xu, Gan-Jun Yu, Biaohua Chen, Ning Wang

{"title":"Recent advances in shape selectivity of MFI zeolite and its effect on the catalytic performance","authors":"Lan Zhang, Ning Liu, Chengna Dai, Ruinian Xu, Gan-Jun Yu, Biaohua Chen, Ning Wang","doi":"10.20517/cs.2022.31","DOIUrl":"https://doi.org/10.20517/cs.2022.31","url":null,"abstract":"MFI zeolite characterized by uniform pore size, adjustable acidity, and high-temperature resistance has a broad application prospect in catalytic reactions. However, controlling the product distribution of zeolite as a catalyst is still confronting great challenges and applications. It is considered as an effective way to control the product distribution by developing and improving new zeolites to modulate their shape selective effect. In recent years, researchers have achieved remarkable successes in investigating the shape selective modulation of zeolites on catalytic reaction and molecular diffusion. The microporous channels of MFI zeolite are the main places for the entry and exit of reactants or product molecules. This review provides the research progress of the shape-selective modulation of MFI zeolite channels and its influence on a series of catalytic performances in recent years. The shape-selective modulation of microporous channels of zeolite, encapsulation of micropores to metals, catalysis of mesoporous zeolite, and the distribution of framework Al were all systematically discussed. The development of advanced catalysts still faces great challenges and potential applications. Finally, we discussed the problems to be addressed urgently in the field of zeolite catalysts in the future.","PeriodicalId":381136,"journal":{"name":"Chemical Synthesis","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133865293","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Coordination-driven [2+2] metallo-macrocycles isomers: conformational control and photophysical properties 配位驱动[2+2]金属大环异构体:构象控制和光物理性质

Chemical Synthesis Pub Date : 1900-01-01 DOI: 10.20517/cs.2022.11

Yunting Zeng, Junjuan Shi, Kehuan Li, Jiaqi Li, Hao Yu, Fang Fang, Xin‐Qi Hao, Houyu Zhang, Ming Wang

引用次数: 1

Molecular chemisorption: a new conceptual paradigm for hydrogen storage 分子化学吸附:氢储存的新概念范式

Chemical Synthesis Pub Date : 1900-01-01 DOI: 10.20517/cs.2021.15

Chengguang Lang, Y. Jia, Xuecheng Yan, L. Ouyang, Min Zhu, X. Yao

引用次数: 4

High-throughput screening of B/N-doped graphene supported single-atom catalysts for nitrogen reduction reaction 氮还原反应中B/ n掺杂石墨烯负载单原子催化剂的高通量筛选

Chemical Synthesis Pub Date : 1900-01-01 DOI: 10.20517/cs.2023.09

Ning-Ning Cao, Nan Zhang, Ke Wang, Keping Yan, Pengfei Xie

{"title":"High-throughput screening of B/N-doped graphene supported single-atom catalysts for nitrogen reduction reaction","authors":"Ning-Ning Cao, Nan Zhang, Ke Wang, Keping Yan, Pengfei Xie","doi":"10.20517/cs.2023.09","DOIUrl":"https://doi.org/10.20517/cs.2023.09","url":null,"abstract":"Transitional metal single atom (TM1) doped graphene catalysts have been widely applied in electrochemical N2 reduction reaction (NRR). However, it remains a challenge for the rational design of highly active and selective electrocatalysts owing to limited knowledge of structure-activity correlations. Here, we adopted first-principle calculations to high-throughput screen the NRR performance of TM1 coordinated with two boron and two nitrogen atoms in graphene (TM1-B2N2/G). A “five-step” strategy was implemented by progressively considering different metrics such as stability, N2 adsorption, N2 activation, potential-determining step, and selectivity. As a result, a volcano plot of reactivity is established by using the valence electron number of TM1 as the descriptor. Among all catalysts, Cr1-B2N2/G exhibits superior performance with a limiting potential of -0.43 V with high selectivity of NRR interpreted by better spatial symmetry and excellent compatibility in terms of energy when N2 interacts with TM1. Our work reveals the general strategy of computational efforts to predict the next generation of advanced catalytic materials for NRR.","PeriodicalId":381136,"journal":{"name":"Chemical Synthesis","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125529877","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Effect of crystal size of ZSM-11 zeolite on the catalytic performance and reaction route in methanol to olefins ZSM-11分子筛晶粒尺寸对甲醇制烯烃催化性能和反应路线的影响

Chemical Synthesis Pub Date : 1900-01-01 DOI: 10.20517/cs.2023.19

Kai Yuan, Xiangyu Jia, Sen Wang, Sheng Fan, Shipei He, Peng Wang, Zhangfeng Qin, Mei Dong, W. Fan, Jianguo Wang

{"title":"Effect of crystal size of ZSM-11 zeolite on the catalytic performance and reaction route in methanol to olefins","authors":"Kai Yuan, Xiangyu Jia, Sen Wang, Sheng Fan, Shipei He, Peng Wang, Zhangfeng Qin, Mei Dong, W. Fan, Jianguo Wang","doi":"10.20517/cs.2023.19","DOIUrl":"https://doi.org/10.20517/cs.2023.19","url":null,"abstract":"ZSM-11 zeolite is a promising catalyst for methanol to olefins (MTO); however, its low catalytic stability limits its realistic application. Herein, various ZSM-11 zeolites with different particle sizes were synthesized. The particle size of ZSM-11 has a significant influence on the formation and evolution of reaction intermediates, thereby determining its catalytic performance in MTO. Notably, S-ZSM-11, with a smaller particle size (approximately 400 nm), showed remarkable propene selectivity and catalytic lifetime as high as 42.6% and 243 h, respectively. These values were significantly higher than those observed with larger particle sizes (> 1 µm). The results obtained from gas chromatograph (GC)-MS, 13C MAS NMR, and various isotope-labeling experiments indicated that reduction of crystal size, accompanied by the generation of more intracrystalline mesopores, inhibits the aromatic intermediates formation and decreases the aromatic-based cycle contribution. In contrast, the alkene-based cycle is relatively enhanced, resulting in higher yields of propene and C3+ alkenes. Moreover, ethene is mainly produced via the paring route due to the limitation of alkyl side-chain growth of methylbenzenes.Highlights: various ZSM-11 zeolites with different particle sizes were synthesized by the hydrothermal method. S-ZSM-11, with a particle size of approximately 400 nm, shows superior catalytic performance in methanol to olefins. The propene selectivity and catalytic lifetime reach as high as 42.6% and 243 h, respectively. Decrease of crystal size inhibits the formation of aromatic species and decreases the aromatic-based cycle contribution. Ethene is mainly produced via the paring route.","PeriodicalId":381136,"journal":{"name":"Chemical Synthesis","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114541663","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Selenium nanomaterials enabled flexible and wearable electronics 硒纳米材料使柔性和可穿戴电子产品成为可能

Chemical Synthesis Pub Date : 1900-01-01 DOI: 10.20517/cs.2022.33

Chao Dang, Mingyang Liu, Zhiwei Lin, Wei Yan

{"title":"Selenium nanomaterials enabled flexible and wearable electronics","authors":"Chao Dang, Mingyang Liu, Zhiwei Lin, Wei Yan","doi":"10.20517/cs.2022.33","DOIUrl":"https://doi.org/10.20517/cs.2022.33","url":null,"abstract":"Selenium (Se), as an intriguing chalcogenide semiconductor, has traditionally been used for solar energy harvesting. The recent development of nanoscience and nanotechnology has enabled a myriad of Se nanomaterials with compelling structures and unique features. Compared with other chalcogens, Se nanomaterials possess anisotropic crystalline structure, intrinsic chirality, and high reactivity, as well as unique optical, electrical, photoconductive, and piezoelectrical properties. The integration of these Se nanomaterials with technologically important materials, such as conductors and semiconductors, over flexible, bendable, stretchable, and highly curved substrates offer a new generation of Se nanomaterial-based flexible and wearable electronics. In this mini review, we survey the recent scientific and technological breakthroughs in Se nanomaterials-enabled flexible and wearable electronics. We highlight the synthesis, fabrication, morphologies, structure, and properties (optical, electrical, optoelectrical, photovoltaic, and piezoelectric) of Se nanomaterials as well as their integration into innovative functional devices that deliver higher forms of applications across smart sensing, health care, and energy domains. We conclude with a critical analysis of existing challenges and opportunities that will trigger the continued progress of the field.","PeriodicalId":381136,"journal":{"name":"Chemical Synthesis","volume":"200 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123021995","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Active Pd nanoclusters supported on nitrogen/amino co-functionalized carbon for highly efficient dehydrogenation of formic acid 氮/氨基共功能化碳负载的活性钯纳米团簇用于甲酸的高效脱氢

Chemical Synthesis Pub Date : 1900-01-01 DOI: 10.20517/cs.2023.13

Dan Liŭ, Cheng Zhou, Ge Wang, Yong Li, Zhimao Yang, Chuncai Kong, Ben Liu

{"title":"Active Pd nanoclusters supported on nitrogen/amino co-functionalized carbon for highly efficient dehydrogenation of formic acid","authors":"Dan Liŭ, Cheng Zhou, Ge Wang, Yong Li, Zhimao Yang, Chuncai Kong, Ben Liu","doi":"10.20517/cs.2023.13","DOIUrl":"https://doi.org/10.20517/cs.2023.13","url":null,"abstract":"Supported noble metal catalysts have exhibited satisfactory catalytic performance in the dehydrogenation of liquid chemical hydrogen carriers, in which the supports play a paramount role in conditioning the nature of the active center and thus improving the overall reactivity. Herein, the specially designed nitrogen/amino co-functionalized carbon (NH2-NC) supports are prepared to load active Pd nanoclusters for efficient dehydrogenation of formic acid (FA). The nitrogen/amino co-functionalization of carbon not only facilitates the Pd nanoclusters evenly dispersed with a mean size of 1.4 nm, but also provides a beneficial metal-support interaction to promote FA dehydrogenation. The as-prepared Pd@NH2-NC discloses a 100% conversion of FA into CO2 and H2 with a remarkable initial turnover frequency (TOFinitial) of 4,892 h-1 and a low activation energy (Ea) of 28.5 kJ mol-1 without additive at 298 K. The work proposes a co-functionalization strategy to reasonably design supports for heterogeneous catalysts and may be extended to develop other multi-functionalized supports with different compositions and nanostructures.","PeriodicalId":381136,"journal":{"name":"Chemical Synthesis","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124744489","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Two-dimentional manganese oxide on ceria for the catalytic partial oxidation of hydrocarbons 二维氧化锰对氧化铈的催化部分氧化碳氢化合物

Chemical Synthesis Pub Date : 1900-01-01 DOI: 10.20517/cs.2022.02

Hai Wang, Liang Wang, Qingsong Luo, Jian Zhang, Chengtao Wang, X. Ge, Wei Zhang, F. Xiao

{"title":"Two-dimentional manganese oxide on ceria for the catalytic partial oxidation of hydrocarbons","authors":"Hai Wang, Liang Wang, Qingsong Luo, Jian Zhang, Chengtao Wang, X. Ge, Wei Zhang, F. Xiao","doi":"10.20517/cs.2022.02","DOIUrl":"https://doi.org/10.20517/cs.2022.02","url":null,"abstract":"Although the rational synthesis of catalysts with strong oxide-support interactions to modulate the geometric and electronic structures and achieve unusual catalytic performance is challenging in heterogeneous catalysis, it is in significant demand for the efficient and sustainable transformation of chemicals. Here, we report the synthesis and performance of a ceria-supported two-dimensional manganese oxide catalyst with strong metal oxide-support interactions, which help to produce well-dispersed and amorphous MnOx layers on the CeO2 matrix (MnOx/CeO2). This catalyst readily reacts with molecular oxygen to give a high capacity of active oxygen species, owing to the interfacial effect. The C-H bonds are adsorbed and activated by these active interfacial oxygen species, leading to high activities and selectivities in the industrially important C-H bond activation reactions, such as the oxidation of hydrocarbons to alcohols and ketones with molecular oxygen under solvent- and initiator-free conditions at mild temperature. The performance of the MnOx/CeO2 catalyst is greater than that of noble metal and highly efficient Mn-Ce solid-solution catalysts. More importantly, the catalyst is stable and exhibits constant reactivity in continuous recycling tests. These results are important for the design of highly efficient catalysts for the selective oxidation of hydrocarbons.","PeriodicalId":381136,"journal":{"name":"Chemical Synthesis","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120854994","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 13