检索结果-南通市图书馆

Stimuli-Responsive Polycycles Based on Hetero-Buckybowl Trithiasumanene

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Chemistry 2021年第12期39卷 3413-3420页

作者： Wenbo Wang Lijun Feng Xinqiang Hua Chengshan Yuan xiangfeng shao State Key Laboratory of Applied Organic Chemistry Lanzhou UniversityTianshui Southern Road 222LanzhouGansu 730000China

Stimuli-responsive molecules are highly desirable in different scenario such as smart materials,bio-imaging,and environment ***,a series of hetero polycycles which show optical response toward chemical stimuli are synthesized from trithiasumanene(TTS).The TTS is transformed into ortho-quinone form,which then undergoes three-component Debus-Radziszewski reaction with aldehydes and ammonia to give oxazole-fused TTS(2-6).The thiophene rings on 3-5 are selectively oxidized to thiophene-S,S-dioxides,affording 3-3O_(2)-5-3O_(2).It is found that the electronic structures of these compounds are governed by the sub-stituents on oxazole moiety and oxidation state of thiophene ***,these hetero polycycles exhibit optical response toward different chemical ***,compounds 6 and 3-3O_(2) can serve as fluorescence detectors for harmful chemicals sulfide ions(S2-/HS-)and aniline,*** work indicates that TTS is a promising precursor for the creation of responsive materials.

关键词： Responsive materials Polycycles Heterocycles Sensors Trithiasumanene

Building up 1-D, 2-D, and 3-D Polyiodide Frameworks by Finely Tuning the Size of Aryls on Ar-S-TTF in the Charge-Transfer （CT） Complexes of Ar-S-TTFs and Iodine

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Journal of Chemistry 2018年第9期36卷 845-850页

作者： Longfei Ma Haili Peng Xiaofeng Lu Lei Liu xiangfeng shao State Key Laboratory of Applied Organic Chemistry Lanzhou University Lanzhou Gansu 730000 China

The arylthio-substituted tetrathiafuivalenes （Ar-S-TTFs） are electron donors having three reversible states, neutral, cation radical, and dica- tion. The charge-transfer （CT） between Ar-S-TTFs （TTF1--TTF3） and iodine （12） is reported herein. TTF1--TTF3 show the CT with 12 in the CH2C12 solution, but they are not completely converted into cation radical state. In CT complexes of TTF1--TTF3 with 12, the charged states of Ar-S-TTFs are distinct from those in solution. TTF1 is at cation radical state, and TTF2--TTF3 are oxidized to dication. The iodine components in complexes show various structures including 1-D chain of V-shaped （Is）-, and 2-D and 3-D iodine networks composed of 12 and （13）^- .

关键词： polyiodide tetrathiafulvalene charge-transfer complex crystal engineering halogen bond

N-Aryl diketopyrrolopyrrole derivatives towards organic optical and electronic materials

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Chemical Letters 2023年第6期34卷 157-163页

作者： Jinqiu Meng Nan Luo Guanxin Zhang xiangfeng shao Zitong Liu Deqing Zhang State Key Laboratory of Applied Organic Chemistry(SKLAOC) Key Laboratory of Special Function Materials and Structure DesignCollege of Chemistry and Chemical EngineeringLanzhou UniversityLanzhou 730000China Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of Organic SolidsInstitute of ChemistryChinese Academy of SciencesBeijing 100190China School of Chemical Sciences University of Chinese Academy of SciencesBeijing 100049China

Diketopyrrolopyrrole(DPP)and related derivatives have drawn great attention due to their applications in organic optical/electronic *** in these materials is associated with developments in the syntheses of the DPP *** modification of DPP at nitrogen atom,including N-alkylation and N-arylation,is an effective strategy to improve its physical and chemical properties,such as solubility,optical and semiconducting ***,N-arylation of DPPs remains challenging compared to the easily accessible ***,the synthesis of N-aryl DPP derivatives and correlatedπ-expanded DPPs are summarized,and their optical/electronic properties are *** future perspectives of N-aryl DPP derivatives are also discussed.

关键词： Diketopyrrolopyrrole N-arylation π-expanded derivatives Organic optical material Organic electronic material

Decoration of Terpyridine with Electron-Rich Unit TH DTAP: an Efficient Way to Explore Fluorescence Sensors for Recognizing Metal Ions

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Chemistry 2019年第9期37卷 909-914页

作者： Taoshan Xu Dongxu Li Chaoxian Yan Yuewei Wu Cheng-Shan Yuan xiangfeng shao State Key Laboratory of Applied Organic Chemistry Lanzhou UniversityLanzhouGansu 730000Chino

The electron-donating unit 2,3,4,6-tetrahydro-1,6-dithia-3a-azaphenalene (THDTAP) was introduced onto terpyridine (TPy) to give a donor-acceptor (D-A) type TPy-ligand (compound 2).Upon selective oxidation of two sulfur atoms on the THDTAP moiety of 2,the ligands 3-6 were *** electronic structures of 2-6 were evaluated by theoretical,electrochemical,and spectroscopic *** oxidation on the sulfur atoms brings significant influence on the electron-donating ability of THDTAP moiety,subsequently,leads to fine modulations on intramolecular charge-transfer (ICT) of 2-6 and the electronically excited states of the complexes of 2-6 with metal *** on the optical response of 2-6 toward metal ions,the step-by-step recognition of Zn2+,Cd2+,and Ag+ ions is set up by employing 2 and 3 as combined fluorescence sensors.

关键词： intramolecular charge-transfer (ICT) introduced onto terpyridine (TPy) 2,3,4,6-tetrahydro-1,6-dithia-3a-azaphenalene (THDTAP)

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

碗状共轭分子的合成及物理和化学性能

科学通报 2019年第35期64卷 3747-3757页

作者：邵向锋兰州大学功能有机分子化学国家重点实验室

发展新型有机共轭分子是构筑有机光电功能材料的基础创新点之一.有机共轭分子中碳原子(或者杂原子)主要采取sp^2或sp杂化,因此它们主要呈现平面结构.与平面共轭体系相比较,曲面共轭分子(比如富勒烯和碗状分子等)展现出独特的物理和化学... 详细信息

发展新型有机共轭分子是构筑有机光电功能材料的基础创新点之一.有机共轭分子中碳原子(或者杂原子)主要采取sp^2或sp杂化,因此它们主要呈现平面结构.与平面共轭体系相比较,曲面共轭分子(比如富勒烯和碗状分子等)展现出独特的物理和化学性质.本文对碗状分子的化学合成及物理和化学性质进行了综述,主要包括碗状分子的两个基本结构单元"荧蒽烯(corannulene)"和"素馨烯(sumanene)"的化学合成历程、化学修饰,尤其是主族元素对于共轭体系的掺杂引起的物理和化学性能的变化.

关键词：曲面共轭分子碗状分子化学合成分子组装光电性能

碗状共轭分子“杂化素馨烯”的设计合成及可控化学转化

在线全文

学校读者我要写书评

暂无评论

中国科学：化学 2022年第2期52卷 280-293页

作者：邵向锋兰州大学功能有机分子化学国家重点实验室甘肃730000

碗状共轭分子是介于平面稠环芳烃和球型富勒烯之间的关键结构,呈现独特的物理和化学性质.本文总结了本课题组在碗状共轭分子"杂化素馨烯"方面的研究进展,包括分子设计的思路、高效合成策略、构效关系分析、化学反应以及基于特征化学反... 详细信息

碗状共轭分子是介于平面稠环芳烃和球型富勒烯之间的关键结构,呈现独特的物理和化学性质.本文总结了本课题组在碗状共轭分子"杂化素馨烯"方面的研究进展,包括分子设计的思路、高效合成策略、构效关系分析、化学反应以及基于特征化学反应的可控转化.我们的研究表明,硫族元素杂化素馨烯(TCSs)可作为核心骨架来构筑结构与功能多样化的共轭稠环化合物,包括具有高量子产率的红色荧光分子、具有多重光电功能的勺状分子、新型电子受体、手性共轭分子等.

关键词：稠环芳烃碗状共轭分子杂化素馨烯合成化学可控转化

柔性四硫富瓦烯(TTF)的制备、结构及自组装

在线全文

学校读者我要写书评

暂无评论

化学学报 2018年第7期76卷 531-536页

作者：张尚玺邵向锋南昌工程学院理学院南昌330099 兰州大学功能有机分子化学国家重点实验室兰州730000

具有适中氧化还原电位和良好柔韧性的平面有机电子给体是有机分子材料和自组装化学的研究基础.本文以易得的原料和简便的操作方法合成了一系列含有亚乙二氧/硫基和邻苯二巯基的不对称四硫富瓦烯(TTF)衍生物.两种取代基团的引入明显增大... 详细信息

具有适中氧化还原电位和良好柔韧性的平面有机电子给体是有机分子材料和自组装化学的研究基础.本文以易得的原料和简便的操作方法合成了一系列含有亚乙二氧/硫基和邻苯二巯基的不对称四硫富瓦烯(TTF)衍生物.两种取代基团的引入明显增大了TTF的氧化还原半电位,进而提高了有机电子给体的光电稳定性.与刚性TTF不同本文所设计和合成出的TTF衍生物是一类具有一定柔韧性的有机电子给体.实验证明,通过在TTF外围引入C—S键可明显增强化合物的柔韧性.在复合物(TTF4)(C_(60))中,TTF4的中心C_2S_4平面与外围C_2S_2平面之间的二面角比中性分子的增加了5.87°,这充分说明柔韧性有机电子给体能够在自组装化学中发挥独特的作用.

关键词：有机电子给体四硫富瓦烯光电稳定性柔韧性自组装

Wide-range color-tunable afterglow emission by the modulation of triplet exciton transition processes based on buckybowl structure

在线全文

学校读者我要写书评

暂无评论

Aggregate

Aggregate 2023年第4期4卷 93-99页

作者： Yongfeng Zhang Chenchen Xiong Wenbo Wang Wenbo Dai Yue Ren Junming Xia Gengchen Li Jianbing Shi Bin Tong Xiaoyan Zheng xiangfeng shao Zhengxu Cai Yuping Dong Beijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications School of Materials Science and EngineeringBeijing Institute of TechnologyBeijingChina State Key Laboratory of Applied Organic Chemistry College of Chemistry and Chemical EngineeringLanzhou UniversityLanzhouChina Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials Key Laboratory of Cluster Science of the Ministry of EducationSchool of Chemistry and Chemical EngineeringBeijing Institute of TechnologyBeijingChina

Buckybowl structures as non-uniform electrostatic potential distributions of poly-cyclic aromatic materials show a unique photoelectric *** this work,OTC was utilized for dynamic modulation of triplet exciton transition *** host molecules with different functional units were selected,thus providing dif-ferent intermolecular interactions in the host/guest ***,the delayed emissions were regulated from 536 to 624 nm via the tuning of the triplet exciton transition processes of OTC in different *** data and theoretical calculations revealed that the varied triplet transition behaviors resulted from the competition between the intersystem crossing(ISC)process of OTC-monomer and the reverse intersystem crossing(RISC)process of *** work proves the superior structure of buckybowl-based luminophore for controlling triplet exciton transition processes and supplies a new perspective for persistent afterglow luminophore design.

关键词： buckybowl structure dynamic modulation host/guest doping systems room temperature phosphores-cence triplet exciton transition processes

Tritellurasumanene:ultrasound assisted one-pot synthesis and extended valence adducts with bromine

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Tritellurasumanene:ultrasound assisted one-pot synthesis and...