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Chinese Journal of Chemistry 2018年第1期36卷 59-62页

作者： Zhengtao Li Jie Yang Feihe Huang State Key Laboratory of Chemical Engineering Center for Chemistry of High- Performance & Novel Materials Department of Chemistry Zhejiang University Hangzhou Zhejiang 310027 China

A novel host-guest recognition motif based on a water-soluble pillar[7]arene （WP7） and a 2,7-diazapyrenium salt （DMDAP） was prepared. According to the integrated results of ^1H NMR, 2D NOESY, UV-vis spectroscopy and fluorescence titration experiments, we demonstrated that the molecular recognition of WP7 to DMDAP in water not only has high association constant but also has pH-responsiveness. Subsequently, we took advantage of this molecular recognition motif to fabricate a supra-amphiphile based on WP7 and an amphiphilic 2,7-diazapyrenium derivative DAPAC. Its controllable self-assembly in water was also investigated by means of TEM and DLS techniques.

关键词： pillararenes host-guest chemistry pH-responsiveness supra-amphiphiles self-assembly

An amphiphilic[2]biphenyl-extended pillar[6]arene:Synthesis,controllable self-assembly in water and application in cell-imaging

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Chinese Chemical Letters 2023年第8期34卷 171-174页

作者： Tingting Chen Jian Wang Ruowen Tang Yuying Huang Qin Zhao Yong Yao School of Chemistry and Chemical Engineering Nantong UniversityNantong 226019China

Synthesis and functionalization of novel macrocyclic host molecules are important topics in supramolecular *** this work,the first amphiphilic[2]biphenyl-extended pillar[6]arene(AM-[2]BP-ExP6)was designed and synthesized with poly(ethylene glycol)chains as the hydrophilic tails and a rigid cavity as the hydrophobic *** to its amphiphilic nature,AM-[2]BP-ExP6 could self-assemble to stable fibers in ***’s more,AM-[2]BP-ExP6 could associate with quaternary ammonium modified tetraphenylethylene guest(QTPE)to form a 2:1 host-guest complex,accompanied by significant enhanced ***,different like AM-[2]BP-ExP6,AM-[2]BP-ExP6⊃QTPE host-guest complex selfassembled into fluorescent particles with diameter about 310 nm,the obtained fluorescent particles can be further employed in living cell imaging.

关键词： pillararenes Host-guest interactions Amphiphilic Self-assembly Cell-imaging

Voltammetric Behavior of 1,4-Dimethoxypillar[m]arene[n]quinones

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Chinese Journal of Chemistry 2016年第9期34卷 861-865页

作者： Hina Saba Jianggen An Yong Yang Min Xue Yongsong Liu School of Science Zhejiang Sci-Tech University Hangzhou Zhejiang 310018 China

The electrochemical properties of a series of 1,4-dimethoxypillar[m]arene[n]quinones （DMP[m]A[n]Qs） and the interactions between individual quinone units have been investigated on glassy carbon electrode in acetonitrile. All the quinone units showed relative electron uptake behavior except 1,4-dimethoxypillar[5]quinones （DMP[5]Q）. The results have shown that the electrochemical behavior of the DMP[m]A[n]Qs is comparatively different from that of their related linear quinone analogues. The resultant properties were attributed to the close proximity of redox-active sites as well as the delocalization of electrons on the aromatic rings. Another aspect to be considered responsible for their electronic properties was suggested to be the electrostatic repulsions between adjacent quinone units in these complex structures. Current studies provide a better understanding on the voltammetric behavior of pillararene derivatives with different numbers of quinone units as well as their future scope in certain future electrochemical applications.

关键词： pillararenes pillarquinones cyclic voltammetry

Solvents/photo/pillar[5]arene triple responsive morphology and luminescence transformation from an amphiphilic dicyanostilbene-functionalized thiophene

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Chinese Chemical Letters 2023年第12期34卷 200-203页

作者： Yang Wang Haibo Zhong Juan Yang Yong Yao Liang Li School of Chemistry and Chemical Engineering Nantong UniversityNantong 226019China School of Chemical and Environmental Engineering Shanghai Institute of TechnologyShanghai 201418China Nantong City Center for Disease Control and Prevention Nantong 226019China

α-Cyanostilbene(CS)based organic luminescent materials with eficient electrical conductivity,aggregation-induced enhanced emission,and controllable multi-colour emission properties,have been aroused wide attention by scientists over the past few ***-assembly of cS-motif in aqueous me-dia refers to an environment-friendly method for preparing luminescent ***,it is still challenging to control the intrinsic hydrophobic properties of the organic components in aqueous *** this study,an amphiphilic dicyanostilbene-functionalized thiophene(ACSTP)derivative was synthe-sized.Z-AcSTP was identified to dissolve in different organic solvents,accompanied with strong and tun-able fluorescence ***,when Z-AcSTP was dispersed in water,it was self-assembled into nanofibers,and the fluorescence was red shifted,accompanied with sharp decrease of intensity com-pared with that in ***,Z-form of ACSTP to its E-form under 365 nm irradiation led to the morphology transformation from nanofibers to ***,upon addition of water-soluble pillar[5]arene(wP5),the nanofibers were transformed into fluorescent hollow particles due to the host-guest interactions between the pyridinium group and WP5 and the obtained fluorescent particles can be further applied in living cell imaging.

关键词： pillararenes Host-guest interactions Amphiphilic Self-assembly Cell-imaging

Pillar[5]arene based artificial light-harvesting supramolecular polymer for efficient and recyclable photocatalytic applications

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Chinese Chemical Letters 2024年第9期35卷 179-182页

作者： Lei Zhou Youjun Zhou Lizhen Fang Yiqiao Bai Yujia Meng Liang Li Jie Yang Yong Yao School of Chemical and Environmental Engineering Shanghai Institute of TechnologyShanghai 201418China School of Chemistry and Chemical Engineering Nantong City Key Laboratory of Life-Organic ChemistryNantong UniversityNantong 226019China College of Science Nanjing Forestry UniversityNanjing 210037China

Photosynthesis is the process through which living plants utilize photosynthetic pigments,such as chlorophyll,to convert CO_(2)and water into organic compounds and release O_(2)under visible *** this study,we have successfully constructed a fluorescent supramolecular polymer(P5Py_(2)/Zn/Gen)n by employing orthogonal pillar[5]arene-based molecular recognition and metal ion *** the supramolecular polymer,the guest molecule Gen unit acts as a light-harvesting moiety,as the ACQ effect is inhibited by host-guest interactions,while the(Py)_(2)/Zn center serves as a catalytic *** employing this orthogonal self-assembly strategy,we have enhanced the stability of both the donor and acceptor in catalyzing the reduction of p-nitrophenol to ***,this photocatalyst can be reused at least 5 times without significant conversion *** findings provide a pathway for constructing a recyclable artificial LHS that mimics the entire photosynthesis process.

关键词： pillararenes Light-harvest Supramolecular polymer Photosynthesis Orthogonal self-assembly

Evidence for a Bulky Unit of a Pillar[5]arene Flipping in the Solid State

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Chinese Journal of Chemistry 2014年第5期32卷 391-395页

作者： Mingguang Pan Min Xue Department of Chemistry Zhejiang UniversityHangzhouZhejiang 310027China

It is well known that pillar[5]arenes have two most stable conformations(pS and pR)in their crystal *** of the intramolecular H-bonding interactions,substituents,temperature,solvent and so on,the rotational behaviors of the phenolic units on pillararenes are also *** paper showed some other kinds of conforma-tions in the functionalized pillar[5]arenes and gave evidence for a bulky unit(1,4-methoxycarbonylmethoxybenzene unit)flipping in the solid *** presence of hydrogen bonding facilitated the intermolecular self-assembly in terms of energy-minimized packing in the ***,the main driving force for the flipping of this bulky unit might be both the intramolecular hydrogen bonding between the phenolic units on pillararenes and quadrupolar hy-drogen bonding between the host and *** paper helps us to have a better understanding on the conforma-tions of pillar[5]arenes.

关键词： pillararenes conformation hydrogen bonding hydroquinone 1,4-methoxycarbonylmethoxybenzene

pH-Responsive Host-Guest Complexations between Negatively Charged Carboxylatopillar[5,6]arenes and N,N′-bis(4-pyridylmeth-yl)-1,4-diaminobutane

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pH-Responsive Host-Guest Complexations between Negatively Ch...

Hybrid vesicles of pillar[5]arene/silica:Host-guest complexation and application in pH-triggered release

河南省化学会2018年学术年会

作者： Qunpeng Duan Kui Lu School of Material and Chemical Engineering Henan University of Engineering School of Chemical Engineering and Food Science Zhengzhou Institute of Technology

In supramolecular chemistry, lots of external stimuli-responsive molecular recognition motifs have gained increasing attention due to their extensive application in the fabrication of various interesting and important supramolecular systems, such as molecular switches, molecular machines, and other smart materials. Among these stimuli-responsive systems, the pH-responsive host-guest recognition systems are of special interest in the delivery of anti-cancer drugs and gene due to the different pH gradients presented in biological and physiological system. Therefore, it is particularly important to build pH-responsive host-guest recognition systems. pillararenes, as a new class of synthetic macrocycles, have received much attention owing to its intriguing and versatile host–guest binding properties. Herein, we report novel pH-responsive host-guest binding motifs based on negatively charged carboxylatopillar[5,6]arenes(CP5 A and CP6 A) with N, N?-bis(4-pyridylmethyl)-1,4-diaminobutane dihydrochloride(C4 N4 Cl2). These new pH-responsive host-guest recognition motifs may provide reference in design molecular switches, responsive supramolecular polymers and smart supramolecular materials in aqueous media.

关键词： pillararenes host-guest chemistry pH-responsiveness

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Chinese Chemical Letters 2021年第1期32卷 214-217页

作者： Chenghao Hou Lijing Liu Siyang Meng Yue Wu Meiran Xie Yongkui Shan Pingang He Pengfei Sun Xiaojuan Liao School of Chemistry and Molecular Engineering East China Normal UniversityShanghai 200241China Key Laboratory for Organic Electronics and Information Displays Institute of Advanced Materials(IAM)Nanjing University of Posts&TelecommunicationsNanjing 210023China

Integrating silica with organic nanoparticles can generate unique *** pillar[5]arene/silica hybrid vesicles were constructed based on the amphiphilic and rigid properties of pillararenes,as well as the catalytic hydrolysis of *** vesicles exhibited the high strength of silica and unique molecular recognition of pillararenes,both of which could tune the pH-trigge red release ***,a rhodamine B derivative with hexyl group(RhB-C6) was synthesized,which can form a complex with the pillar[5]*** on the host-guest interaction and high strength of silica,the hybrid vesicles could load more RhB-C6 and the rhodamine B was released more slowly compared with the organic vesicles.

关键词： pillararenes Hybrid materials Supramolecular chemistry Silica nanoparticles Host-guest interaction

Four Pillar[5]arene Constitutional Isomers:Synthesis,Crystal Structures,and Host-Guest Complexation of Their Derivatives with Paraquat in Water

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Chinese Journal of Chemistry 2015年第3期33卷 356-360页

作者： Yujuan Zhou Yong Yao Feihe Huang State Key Laboratory of Chemical Engineering Department of ChemistryZhejiang UniversityHangzhouZhejiang 310027China

A pillar[5]arene prepared from monomer 1 has four constitutional *** these constitutional iso-mers have the same molecular formula,their other properties that we have investigated are more or less *** have different melting points,different NMR spectra and different crystal ***,the corre-sponding four anionic constitutional pillar[5]arene isomers derived from these four constitutional isomers showed different binding abilities with paraquat G in *** association constants of 3a⊃G,3b⊃G,3c⊃G and 3d⊃G were determined to be(3.33±0.46)×10^(4)L•mol^(−1),(5.00±0.63)×10^(4)L•mol^(−1),(3.33±0.28)×10^(4)L•mol^(−1),and(1.43±0.09)×10^(4)L•mol^(−1),respectively.

关键词： self-assembly pillararenes supramolecular chemistry host-guest systems paraquat