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基于主客体掺杂室温磷光材料的氧气传感材料（英文）

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有机化学 2024年第8期44卷 2523-2529页

作者：张惟李庚辰苏昊戴文博孙鹏石建兵佟斌蔡政旭董宇平北京理工大学材料学院结构可控先进功能材料与绿色应用实验室中国科学技术大学合肥国家实验室温州大学化学与材料工程学院温州大学温州市生物保健材料与化学重点实验室北京理工大学前沿交叉科学研究院

定量氧气检测,特别是在低浓度下的检测,在生物、复杂环境和化学过程工程中具有重要意义.由于磷光的三线态激子对氧气的高灵敏度和快速响应,纯有机室温磷光用于氧气检测近年来引起了人们的广泛关注.然而,在室温下纯有机主客体掺杂材料同... 详细信息

定量氧气检测,特别是在低浓度下的检测,在生物、复杂环境和化学过程工程中具有重要意义.由于磷光的三线态激子对氧气的高灵敏度和快速响应,纯有机室温磷光用于氧气检测近年来引起了人们的广泛关注.然而,在室温下纯有机主客体掺杂材料同时实现超长磷光和定量氧气检测仍然面临挑战.为实现磷光需要限制发光基元的非辐射弛豫需要的主体分子间紧密堆积,致使氧气不容易进材料体系中,进而难以实现对氧气的响应.本研究探讨了由4',4'-二叔丁基-4-溴三苯胺(TPABu Br)和4-溴代正丁基萘酰亚胺(NIBr)组成的主客体掺杂室温磷光材料在低氧环境下的氧敏感性.该掺杂材料在室温下展现出荧光和磷光双发射特性.主体TPABu Br中的叔丁基基团使晶体结构中存在适当的分子间距,赋予了掺杂材料氧透过性.掺杂材料的磷光发射强度与氧体积分数之间的线性关系符合Stern-Volmer方程,可用于定量分析氧浓度,且具有快速响应和优异的光稳定性,展示了其作为氧传感器的潜力.总的来说,本研究阐述了NIBr/TPABu Br掺杂材料的设计和特性,展示了其在氧浓度检测方面的潜力,为设计氧传感系统提供了新思路.

关键词：有机室温磷光主客体掺杂策略氧敏感材料氧气浓度检测

Composition, structure and mechanical properties of several natural cellular materials

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Chinese Science Bulletin 2007年第21期52卷 2903-2908页

作者： YIN Zuodong PAN ZeLin WANG Cai dong yuping OU YuXiang Beijing National Laboratory for Molecular Sciences (BNLMS) New Materials Laboratory Institute of Chemistry Chinese Academy of Sciences Beijing 100080 China Beijing Institute of Technology Beijing 100081 China

The stem piths of sunflower, kaoliang and corn are natural cellular materials. In this paper, the contents of the compositions of these piths are determined and their cell shapes and structures are examined through scanning electron microscope (SEM) and optical microscope. Further research is conducted in the effects of the compositions and structures of the piths on the mechanical properties after testing the partial mechanical properties. The results show that the total cellulose, hemicelluloses and lignin content of each sample approaches 75% of the dry mass of its primary cell walls. With the fall of R value, a parameter relative to the contents of the main compositions, the flexibilities of the cellular piths de- scend while their stresses and rigidities increase. The basic cell shape making up the sunflower pith is approximately a tetrakaidehedron. The stem piths of kaoliang and corn are made up of cells close to hexangular prisms and a few tubular ones which can observably reinforce their mechanical properties in the axial directions.

关键词：天然泡沫合成物机械特征天然泡沫材料

An AIEE polyelectrolyte as a light-up fluorescent probe for heparin sensing in full detection range

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Science China Chemistry 2013年第9期56卷 1239-1246页

作者： CHEN dongYang SHI JianBing WU YanMei TONG Bin ZHI JunGe dong yuping School of Materials Science and Engineering Beijing Institute of Technology School of Chemistry Beijing Institute of Technology

Polyelectrolyte PTPEPyH, containing tetraphenylethene (TPE) and pyridinium, was synthesized. Its optical properties were investigated with spectroscopies and the results showed that there were two emission-enhanced stages in the interaction between positive-charged PTPEPyH and negative-charged biomacromolecule heparin. The mechanism was very different due to the reduced non-radiative energy loss and the change of surroundings. The polyelectrolyte PTPEPyH, compared with ChS and HA, also showed high selectivity for heparin in the buffer solution and could be used as a potential bio-probe for heparin quantification in the clinical full range.

关键词： aggregation-induced emission enhancement (AIEE) tetraphenylethene (TPE) heparin quantification pyridinium biosensor

有机光敏剂在光催化CO_(2)还原中的应用

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化学通报 2024年第9期87卷 1107-1110页

作者：熊晨辰程鑫石建兵佟斌孙鹏蔡政旭董宇平北京理工大学材料学院北京100081 北京理工大学前沿交叉科学研究院北京100081

光催化CO_(2)还原是将太阳能转化为有用化学原料的重要策略。光敏剂能提高光催化体系的光吸收和电子转移能力,通过与催化剂结合,可以有效实现CO_(2)还原。相较于广泛使用的金属基光敏剂,能级可调的有机光敏剂更具成本效益和环保性,具备... 详细信息

光催化CO_(2)还原是将太阳能转化为有用化学原料的重要策略。光敏剂能提高光催化体系的光吸收和电子转移能力,通过与催化剂结合,可以有效实现CO_(2)还原。相较于广泛使用的金属基光敏剂,能级可调的有机光敏剂更具成本效益和环保性,具备广阔的发展潜力。本文综述了有机光敏剂在CO_(2)还原CO领域的研究进展,并讨论了有机光敏剂发展的挑战和前景。

关键词：光催化CO_(2)还原有机光敏剂三线态激子

Conformational sensitivity of tetraphenyl-1,3-butadiene derivatives with aggregation-induced emission characteristics

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Science China Chemistry 2019年第10期62卷 1393-1397页

作者： Yahui Zhang Huanyu Xu Weiquan Xu Chen Zhang Jianbing Shi Bin Tong Zhengxu Cai yuping dong Beijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications School of Materials Science and EngineeringBeijing Institute of Technology

Organic dyes with conformational sensitivity can be used to probe weak interactions at the molecular ***,three molecules based on tetraphenyl-1,3-butadienes(TPBs)were synthesized and studied with respect to their synthesis,structural characterization and potential *** TPBs showed aggregation-induced emission(AIE)characteristics and sensitive conformational properties,in which the emission wavelengths could be changed in different *** TPBs single crystals revealed that the phenyl groups at the 4-position of the 1,3-butadienes contributed to their conformational ***,the potential application for monitoring the interactions among polyelectrolyte complexes and metal ions was explored,and the results showed that TPBs could be used for sensitively probing some weak interactions by changing the emission wavelengths due to their conformation-sensitive *** may become a new star in AIE research fields.

关键词： tetraphenyl-1 3-butadienes(TPBs) aggregation-induced emission(AIE) polyelectrolyte complexes(PEC) conformational sensitivity

Anthracene Modified by Aldehyde Groups Exhibiting Aggregation-Induced Emission Properties

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Chinese Journal of Chemistry 2016年第11期34卷 1071-1075页

作者： Zhe Peng Zhi Wang Bin Tong Yingchun Ji Jianbing Shi Junge Zhi yuping dong Beijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications School of Materials Science and Engineering Beijing Institute of Technology Beijing 100081 China School of Chemistry Beijing Institute of Technology Beijing 100081 China

In order to get an easy way to achieve the transformation from aggregation-caused quenching luminophores （ACQphores） to aggregation-induced emission luminogens （AIEgens）, we took aldehyde groups as the modifying group to decorate anthracene. The fluorescence performances of 9-anthraldehyde （AnA） and 9,10-anthracenedicarboxaldehyde （AnDA） in solution and aggregated state were studied. We found out that the aldehyde group can transform anthracene with aggregation-caused quenching properties to AIEgen. The single-crystal structures analy- sis of AnA and AnDA showed that their structure characteristics are responsible for the AIE properties of AnA and AnDA. On one hand, the aldehyde group can cause steric effects to lower intermolecular n-π packing style in aggregated state. On the other hand, intermolecular H-bonding interactions can restrict the intramolecular rotation and suppress internal charge transfer. These results may supply a new simple method for the transformation from ACQphores to AIEgens on the point of the molecular design.

关键词： aggregation-induced emission aldehyde group organic luminescent materials mechanism hydrogen-bonding

Aggregation-Induced Emission of Hexaphenyl-1,3-butadiene

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Chinese Journal of Chemistry 2015年第7期33卷 701-704页

作者： Yahui Zhang Lingwei Kong Jianbing Shi Bin Tong Junge Zhi Xiao Feng yuping dong School of Materials Science and Engineering Beijing Institute of Technology Beijing 100081 China School of Chemistry Beijing Institute of Technology Beijing 100081 China

A new type of AlE molecules based on hexaphenyl-1,3-butadienes was reported with respect to the synthesis and characterization. This material exhibited different maximum emission wavelength and enhanced emission inten... 详细信息

关键词： aggregation-induced emission hexaphenyl-1,3-butadienes aggregate state phase transition

Electrospun Nanofibrous Materials for Wound Healing

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Advanced Fiber Materials 2020年第4期2卷 212-227页

作者： yuping dong Yuqi Zheng Keyan Zhang Yueming Yao Lihuan Wang Xiaoran Li Jianyong Yu Bin Ding State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of TextilesDonghua UniversityShanghai 201620China College of Materials Science and Engineering Donghua UniversityShanghai 201620China Innovation Center for Textile Science and Technology Donghua UniversityShanghai 200051China

Wound dressing materials which are capable of meeting the demands of accelerating wound closure and promoting wound healing process have being highly *** nanofibrous materials show great application potentials for wound healing owing to relatively large surface area,better mimicry of native extracellular matrix,adjustable waterproofness and breathability,and programmable drug delivery *** this review article,we begin with a discussion of wound healing process and current commercial wound dressing ***,we emphasize on electrospun nanofibrous materials for wound dressing,covering the efforts for controlling fiber alignment and morphology,constructing 3D scaffolds,developing waterproof-breathable membrane,governing drug delivery performance,and regulating stem cell ***,we finish with challenges and future prospects of electrospun nanofibrous materials for wound dressings.

关键词： Electrospun Wound dressings Waterproofness Breathability Drug delivery Stem cell therapy

Organic Host-Guest Materials with Bright Red Room-Temperature Phosphorescence for Persistent Bioimaging

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中国化学:英文版 2023年第13期41卷 1575-1582页

作者： Yueyue Si Yeyun Zhao Wenbo Dai Shisheng Cui Peng Sun Jianbing Shi Bin Tong Zhengxu Cai yuping dong Beijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications School of Materials Science and EngineeringBeijing Institute of TechnologyBeijing100081 China Advanced Research Institute of Multidisciplinary Science Beijing Institute of TechnologyBeijing100081 China

Organic room-temperature phosphorescence(RTP)materials have attracted immense attention in bioimaging due to their long emission lifetime and large Stokes *** materials with long emission wavelength can improve the penetration depth for ***,the design of red persistent RTP materials is still *** this study,a fused-ring structure has been proposed to effectively decrease the triplet energy level,thus extending the emission wavelength of *** addition,the fused-ring structure exhibits a high molar extinction coefficient(ɛ)and high luminescence efficiency due to the rigid structure.A new class of crystalline hosts(iminodibenzyl,IDB)are developed to stabilize the triplet excitons that are generated from the fused-ring *** maximum RTP wavelength of doping materials can reach 635 nm with a lifetime of 9.35 ***-disperse nanoparticles are successfully prepared for in vivo time-resolved bioimaging,which eliminates the background fluorescence interference from biological *** reveal a delicate design strategy for the construction of long-wavelength emissive RTP materials for high-resolution bioimaging.

关键词： Room-temperature phosphorescence Fused-ring systems Long-wavelength emission High-resolution bioimaging Luminescence Nanoparticles