601
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Farcas A, Tregnago G, Resmerita AM, Aubert PH, Cacialli F. Synthesis and photophysical characteristics of polyfluorene polyrotaxanes. Beilstein J Org Chem 2015; 11:2677-88. [PMID: 26877789 PMCID: PMC4734422 DOI: 10.3762/bjoc.11.288] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2015] [Accepted: 12/04/2015] [Indexed: 11/23/2022] Open
Abstract
Two alternating polyfluorene polyrotaxanes (3·TM-βCD and 3·TM-γCD) have been synthesized by the coupling of 2,7-dibromofluorene encapsulated into 2,3,6-tri-O-methyl-β- or γ-cyclodextrin (TM-βCD, TM-γCD) cavities with 9,9-dioctylfluorene-2,7-diboronic acid bis(1,3-propanediol) ester. Their optical, electrochemical and morphological properties have been evaluated and compared to those of the non-rotaxane counterpart 3. The influence of TM-βCD or TM-γCD encapsulation on the thermal stability, solubility in common organic solvents, film forming ability was also investigated. Polyrotaxane 3·TM-βCD exhibits a hypsochromic shift, while 3·TM-γCD displays a bathochromic with respect to the non-rotaxane 3 counterpart. For the diluted CHCl3 solutions the fluorescence lifetimes of all compounds follow a mono-exponential decay with a time constant of ≈0.6 ns. At higher concentration the fluorescence decay remains mono-exponential for 3·TM-βCD and polymers 3, with a lifetime τ = 0.7 ns and 0.8 ns, whereas the 3·TM-γCD polyrotaxane shows a bi-exponential decay consisting of a main component (with a weight of 98% of the total luminescence) with a relatively short decay constant of τ1 = 0.7 ns and a minor component with a longer lifetime of τ2 = 5.4 ns (2%). The electrochemical band gap (ΔEg) of 3·TM-βCD polyrotaxane is smaller than that of 3·TM-γCD and 3, respectively. The lower ΔEg value for 3·TM-βCD suggests that the encapsulation has a greater effect on the reduction process, which affects the LUMO energy level value. Based on AFM analysis, 3·TM-βCD and 3·TM-γCD polyrotaxane compounds exhibit a granular morphology with lower dispersity and smaller roughness exponent of the film surfaces in comparison with those of the neat copolymer 3.
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Affiliation(s)
- Aurica Farcas
- Supramolecular Chemistry Group, ''Petru Poni'' Institute of Macromolecular Chemistry, Grigore Ghica Voda Alley, 700487-Iasi, Romania
| | - Giulia Tregnago
- London Centre for Nanotechnology and Department of Physics and Astronomy University College London, Gower Street, London WC1E 6BT, UK
| | - Ana-Maria Resmerita
- Supramolecular Chemistry Group, ''Petru Poni'' Institute of Macromolecular Chemistry, Grigore Ghica Voda Alley, 700487-Iasi, Romania
| | - Pierre-Henri Aubert
- Laboratoire de Physicochimie des Polymères et des Interfaces (EA 2528), Institut des Matériaux, Université de Cergy-Pontoise, F-95031 Cergy-Pontoise Cedex, France
| | - Franco Cacialli
- London Centre for Nanotechnology and Department of Physics and Astronomy University College London, Gower Street, London WC1E 6BT, UK
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602
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Yang L, Zhao H, Li Y, Ran X, Deng G, Xie X, Li CP. Fluorescent Detection of Tadalafil Based on Competitive Host-Guest Interaction Using p-Sulfonated Calix[6]arene Functionalized Graphene. ACS APPLIED MATERIALS & INTERFACES 2015; 7:26557-26565. [PMID: 26571350 DOI: 10.1021/acsami.5b07833] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
A competitive fluorescence method toward tadalafil detection has been developed based on host-guest recognition by selecting rhodamine B (RhB) and p-sulfonated calix[6]arene functionalized graphene (CX6-Gra) as the "reporter pair". Upon the presence of tadalafil to the performed CX6-Gra-RhB complex, the RhB molecules are displaced by tadalafil, leading to a "switch-on" fluorescence signal. The observed fluorescence signal can be used for quantitative detection of tadalafil ranging from 1.00 to 50.00 μM with a detection limit of 0.32 μM (S/N = 3). The inclusion complex of tadalafil and CX6 was studied by molecular docking and the results indicated that a 1:1 host-guest stoichiometry had the lowest ΔG value of -7.18 kcal/mol. The docking studies demonstrated that the main forces including π-π interactions, electrostatic interactions, and hydrophobic interactions should be responsible for the formation of this inclusion compound. The mechanism of the competitive host-guest interaction was clarified. The binding constant (K) of the tadalafil/CX6 complex was more than 5 times greater than that of RhB/CX6.
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Affiliation(s)
- Long Yang
- School of Chemical Science and Engineering, Yunnan University , Kunming 650091, People's Republic of China
| | - Hui Zhao
- Laboratory for Conservation and Utilization of Bio-resource, Yunnan University , Kunming 650091, People's Republic of China
| | - Yucong Li
- School of Chemical Science and Engineering, Yunnan University , Kunming 650091, People's Republic of China
| | - Xin Ran
- School of Chemical Science and Engineering, Yunnan University , Kunming 650091, People's Republic of China
| | - Guogang Deng
- School of Chemical Science and Engineering, Yunnan University , Kunming 650091, People's Republic of China
| | - Xiaoguang Xie
- School of Chemical Science and Engineering, Yunnan University , Kunming 650091, People's Republic of China
| | - Can-Peng Li
- School of Chemical Science and Engineering, Yunnan University , Kunming 650091, People's Republic of China
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603
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Zhai J, Xie X, Bakker E. Solvatochromic Dyes as pH-Independent Indicators for Ionophore Nanosphere-Based Complexometric Titrations. Anal Chem 2015; 87:12318-23. [DOI: 10.1021/acs.analchem.5b03663] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Jingying Zhai
- Department of Inorganic and
Analytical Chemistry, University of Geneva, Quai Ernest-Ansermet 30, CH-1211 Geneva, Switzerland
| | - Xiaojiang Xie
- Department of Inorganic and
Analytical Chemistry, University of Geneva, Quai Ernest-Ansermet 30, CH-1211 Geneva, Switzerland
| | - Eric Bakker
- Department of Inorganic and
Analytical Chemistry, University of Geneva, Quai Ernest-Ansermet 30, CH-1211 Geneva, Switzerland
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604
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Xu XD, Li X, Chen H, Qu Q, Zhao L, Ågren H, Zhao Y. Host-Guest Interaction-Mediated Construction of Hydrogels and Nanovesicles for Drug Delivery. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2015; 11:5901-5906. [PMID: 26426699 DOI: 10.1002/smll.201502222] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2015] [Indexed: 06/05/2023]
Abstract
Hand-in-hand or head-to-head: A novel naphthalimide derivative is successfully designed and synthesized, which can self-assemble to produce hydrogels. When injecting this compound into CB[8] solution, the nanovesicles are obtained with a narrow size distribution. The cytotoxicity assay confirms that doxorubicin-loaded nanocarriers show therapeutic effects to cancer cells.
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Affiliation(s)
- Xing-Dong Xu
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore, 637371
| | - Xin Li
- Division of Theoretical Chemistry and Biology, School of Biotechnology, KTH Royal Institute of Technology, SE-, 10691, Stockholm, Sweden
| | - Hongzhong Chen
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore, 637371
| | - Qiuyu Qu
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore, 637371
| | - Lingzhi Zhao
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore, 637371
| | - Hans Ågren
- Division of Theoretical Chemistry and Biology, School of Biotechnology, KTH Royal Institute of Technology, SE-, 10691, Stockholm, Sweden
| | - Yanli Zhao
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore, 637371
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798
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605
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Guo DS, Uzunova VD, Assaf KI, Lazar AI, Liu Y, Nau WM. Inclusion of neutral guests by water-soluble macrocyclic hosts – a comparative thermodynamic investigation with cyclodextrins, calixarenes and cucurbiturils. Supramol Chem 2015. [DOI: 10.1080/10610278.2015.1105374] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Dong-Sheng Guo
- Department of Life Sciences and Chemistry, Jacobs University Bremen, Bremen, Germany
- State Key Laboratory of Elemento-Organic Chemistry, Department of Chemistry, Collaborative Innovation Center of Chemical Science and Engineering, Nankai University, Tianjin, P.R. China
| | - Vanya D. Uzunova
- Department of Life Sciences and Chemistry, Jacobs University Bremen, Bremen, Germany
| | - Khaleel I. Assaf
- Department of Life Sciences and Chemistry, Jacobs University Bremen, Bremen, Germany
| | - Alexandra I. Lazar
- Department of Life Sciences and Chemistry, Jacobs University Bremen, Bremen, Germany
| | - Yu Liu
- State Key Laboratory of Elemento-Organic Chemistry, Department of Chemistry, Collaborative Innovation Center of Chemical Science and Engineering, Nankai University, Tianjin, P.R. China
| | - Werner M. Nau
- Department of Life Sciences and Chemistry, Jacobs University Bremen, Bremen, Germany
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606
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Gong Y, Chen H, Ma X, Tian H. A Cucurbit[7]uril Based Molecular Shuttle Encoded by Visible Room-Temperature Phosphorescence. Chemphyschem 2015; 17:1934-8. [PMID: 26548653 DOI: 10.1002/cphc.201500901] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2015] [Indexed: 11/09/2022]
Abstract
A visible room-temperature phosphorescence (RTP) signal, generated by complexation of cururbit[7]uril (CB[7]) and bromo-substituted isoquinoline in aqueous solution, is employed to address the shuttling of a pH-controlling molecular shuttle fabricated by CB[7] and a phosphor 6-bromoisoquinoline derivative IQC[5]. The CB[7] host shuttles along the axial guest under acidic conditions, accompanied by a weak RTP emission signal, while deprotonation of the guest IQC[5] makes the CB[7] wheel locate on the phosphor group, leading to intense RTP emission. The switching RTP emission of the molecular shuttle, via pH adjusting, can be visibly identified by the naked eye. This is the first CB-based molecular shuttle with an RTP signal as the output address of its shuttling and conformation.
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Affiliation(s)
- Yifan Gong
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals, East China University of Science & Technology, Shanghai, 200237, P. R. China
| | - Hui Chen
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals, East China University of Science & Technology, Shanghai, 200237, P. R. China
| | - Xiang Ma
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals, East China University of Science & Technology, Shanghai, 200237, P. R. China.
| | - He Tian
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals, East China University of Science & Technology, Shanghai, 200237, P. R. China
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607
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Zakharova GV, Avakyan VG, Markelov VP, Svyatoslavskii NL, Svyatoslavskaya TA, Chibisov AK. Effect of cucurbituril on the primary photoprocesses in indocarbocyanine dyes in water. HIGH ENERGY CHEMISTRY 2015. [DOI: 10.1134/s001814391506017x] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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608
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Tang J, Xu B, Mao X, Yang H, Wang X, Lv X. One-Pot Synthesis of Pyrrolo[3,2,1-kl]phenothiazines through Copper-Catalyzed Tandem Coupling/Double Cyclization Reaction. J Org Chem 2015; 80:11108-14. [DOI: 10.1021/acs.joc.5b01745] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Jiaming Tang
- Department of Chemistry,
College of Chemistry and Life Sciences, Zhejiang Normal University, Jinhua 321004, People’s Republic of China
| | - Bingqing Xu
- Department of Chemistry,
College of Chemistry and Life Sciences, Zhejiang Normal University, Jinhua 321004, People’s Republic of China
| | - Xi Mao
- Department of Chemistry,
College of Chemistry and Life Sciences, Zhejiang Normal University, Jinhua 321004, People’s Republic of China
| | - Hongyan Yang
- Department of Chemistry,
College of Chemistry and Life Sciences, Zhejiang Normal University, Jinhua 321004, People’s Republic of China
| | - Xiaoxia Wang
- Department of Chemistry,
College of Chemistry and Life Sciences, Zhejiang Normal University, Jinhua 321004, People’s Republic of China
| | - Xin Lv
- Department of Chemistry,
College of Chemistry and Life Sciences, Zhejiang Normal University, Jinhua 321004, People’s Republic of China
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609
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Xiao D, Zhang D, Chen B, Xie D, Xiang Y, Li X, Jin W. Size-selective recognition by a tubular assembly of phenylene-pyrimidinylene alternated macrocycle through hydrogen-bonding interactions. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2015; 31:10649-10655. [PMID: 26375477 DOI: 10.1021/acs.langmuir.5b02273] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Study of artificial tubular assemblies as a useful host scaffold for size-selective recognition and release of guest molecules is an important subject in host-guest chemistry. We describe well-defined self-assembled nanotubes (NT6mer) formed from π-conjugated m-phenylene-pyrimidinylene alternated macrocycle 16mer that exhibit size-selective recognition toward a specific aromatic acid. In a series of guest molecules, a size-matched trimesic acid (G3) gives inclusion complexes (NT6mer⊃G3) in dichloromethane resulting in an enhanced and red-shifted fluorescence. (1)H nuclear magnetic resonance (NMR) titration experiments indicated that the complex was formed in a 1:1 molar ratio. Density functional theory (DFT) calculations and the binding constant value (K = 1.499 × 10(5) M(-1)) of NT6mer with G3 suggested that the complex involved triple hydrogen-bonding interactions. The encapsulated guest G3 molecules can be readily released from the tubular channel through the dissociation of hydrogen bonding by the addition of a polar solvent such as dimethylsulfoxide (DMSO). In contrast, 16mer could not form self-assembled nanotubes in CHCl3 or tetrahydrofuran (THF) solution, leading to weak or no size-selective recognizability, respectively.
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Affiliation(s)
- Duoduo Xiao
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Chemistry, Chemical Engineering and Biotechnology, Donghua University , 2999 North Renmin Road, Songjiang, Shanghai 201620, People's Republic of China
| | - Dengqing Zhang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Chemistry, Chemical Engineering and Biotechnology, Donghua University , 2999 North Renmin Road, Songjiang, Shanghai 201620, People's Republic of China
| | - Beihua Chen
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Chemistry, Chemical Engineering and Biotechnology, Donghua University , 2999 North Renmin Road, Songjiang, Shanghai 201620, People's Republic of China
| | - Dahai Xie
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Chemistry, Chemical Engineering and Biotechnology, Donghua University , 2999 North Renmin Road, Songjiang, Shanghai 201620, People's Republic of China
| | - Yunjie Xiang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Chemistry, Chemical Engineering and Biotechnology, Donghua University , 2999 North Renmin Road, Songjiang, Shanghai 201620, People's Republic of China
| | - Xianying Li
- School of Environmental Science and Engineering, Donghua University , 2999 North Renmin Road, Songjiang, Shanghai 201620, People's Republic of China
| | - Wusong Jin
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Chemistry, Chemical Engineering and Biotechnology, Donghua University , 2999 North Renmin Road, Songjiang, Shanghai 201620, People's Republic of China
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610
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Study of complexation of styrylheterocycles with cavitands by spectroscopic methods. Russ Chem Bull 2015. [DOI: 10.1007/s11172-015-1178-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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611
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Liu L, Yao Y, Zhang X, Hao C. A Fluorescent 1,5-Naphthalenedisulfonate Anion-Linked Cucurbit[6]uril Framework. European J Org Chem 2015. [DOI: 10.1002/ejoc.201501127] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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612
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Synthesis and spectroanalytical studies of a new heterocyclic acid–base indicator. Chem Heterocycl Compd (N Y) 2015. [DOI: 10.1007/s10593-015-1764-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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613
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Mondal P, Rath SP. Highly Selective and Sensitive Detection of Picric Acid Explosive by a Bisporphyrin Cleft: Synergistic Effects of Encapsulation, Efficient Electron Transfer, and Hydrogen Bonding. Eur J Inorg Chem 2015. [DOI: 10.1002/ejic.201500645] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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614
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Bhowmick S, Chakraborty S, Das A, Nallapeta S, Das N. Pyrazine Motif Containing Hexagonal Macrocycles: Synthesis, Characterization, and Host–Guest Chemistry with Nitro Aromatics. Inorg Chem 2015; 54:8994-9001. [DOI: 10.1021/acs.inorgchem.5b01156] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Sourav Bhowmick
- Department
of Chemistry, Indian Institute of Technology Patna, Patna 800 013, Bihar, India
| | - Sourav Chakraborty
- Department
of Chemistry, Indian Institute of Technology Patna, Patna 800 013, Bihar, India
| | - Atanu Das
- Department
of Chemistry, University of Texas at Austin, Austin, Texas 78712, United States
| | | | - Neeladri Das
- Department
of Chemistry, Indian Institute of Technology Patna, Patna 800 013, Bihar, India
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615
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Roy B, Ghosh AK, Srivastava S, D'Silva P, Mukherjee PS. A Pd8 Tetrafacial Molecular Barrel as Carrier for Water Insoluble Fluorophore. J Am Chem Soc 2015; 137:11916-9. [DOI: 10.1021/jacs.5b08008] [Citation(s) in RCA: 114] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Bijan Roy
- Department
of Inorganic and Physical Chemistry and ‡Department of Biochemistry, Indian Institute of Science, Bangalore 560012, India
| | - Aloke Kumar Ghosh
- Department
of Inorganic and Physical Chemistry and ‡Department of Biochemistry, Indian Institute of Science, Bangalore 560012, India
| | - Shubhi Srivastava
- Department
of Inorganic and Physical Chemistry and ‡Department of Biochemistry, Indian Institute of Science, Bangalore 560012, India
| | - Patrick D'Silva
- Department
of Inorganic and Physical Chemistry and ‡Department of Biochemistry, Indian Institute of Science, Bangalore 560012, India
| | - Partha Sarathi Mukherjee
- Department
of Inorganic and Physical Chemistry and ‡Department of Biochemistry, Indian Institute of Science, Bangalore 560012, India
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616
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Shinde MN, Bhasikuttan AC, Mohanty J. The Contrasting Recognition Behavior of β-Cyclodextrin and Its Sulfobutylether Derivative towards 4′,6-Diamidino-2-phenylindole. Chemphyschem 2015; 16:3425-32. [DOI: 10.1002/cphc.201500638] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2015] [Indexed: 01/14/2023]
Affiliation(s)
- Meenakshi N. Shinde
- Radiation & Photochemistry Division; Bhabha Atomic Research Centre; Mumbai 400 085 India
- Student under BARC-SPPU PhD Program; Department of Chemistry; Savitribai Phule Pune University; Pune 411007 India
| | - Achikanath C. Bhasikuttan
- Radiation & Photochemistry Division; Bhabha Atomic Research Centre; Mumbai 400 085 India
- Homi Bhabha National Institute, Anushaktinagar; Mumbai 400 094 India
| | - Jyotirmayee Mohanty
- Radiation & Photochemistry Division; Bhabha Atomic Research Centre; Mumbai 400 085 India
- Homi Bhabha National Institute, Anushaktinagar; Mumbai 400 094 India
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617
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Bani-Yaseen AD. Synchronous spectrofluorimetric study of the supramolecular host-guest interaction of β-cyclodextrin with propranolol: A comparative study. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2015; 148:93-98. [PMID: 25875030 DOI: 10.1016/j.saa.2015.03.128] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2015] [Revised: 03/21/2015] [Accepted: 03/30/2015] [Indexed: 06/04/2023]
Abstract
The objective of this work is to assess the use of constant-wavelength synchronous fluorescence spectroscopy (SFS) in comparison to conventional fluorescence spectroscopy (CFS) for the investigation of the supramolecular host-guest interaction of β-CD with propranolol (PPL) in aqueous solutions. Scanning for the optimal Δλ at which the SFS can be performed in the presence of β-CD was examined. The results obtained revealed three distinguishable shapes for PPL using SFS that can be represented by three different Δλ values, namely 10, 40, and 100 nm. However, the effect of the β-CD concentration on the fluorescence intensity of PPL was examined using CFS and SFS of PPL at a Δλ of 10 and 100 nm. The change in the fluorescence intensity was used to calculate the equilibrium constant (Keq) for the formation of the β-CD:PPL inclusion complex by applying the Benesi-Hildebrand method. Keq values of 108, 112, and 117 M(-1) were obtained using SFS with a Δλ of 10 and 100 nm, and CFS, respectively. Further, the SFS method was successfully employed to examine the iodide quenching effect on the fluorescence intensity of PPL, where the results obtained revealed a Stern-Volmer quenching constant of 42.8 M(-1), which is in good agreement with results obtained using CFS. All results obtained using the SFS method were compared with the results obtained using the CFS method.
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Affiliation(s)
- Abdulilah Dawoud Bani-Yaseen
- Department of Chemistry & Earth Sciences, College of Arts & Sciences, Qatar University, P.O. Box 2713, Doha, Qatar.
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618
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Trencanova MG, Jane E, Szocs V, Halaszova S, Jerigova M, Haizer L, Velic D. Fluorescence Dynamics of Monocyclodextrin- and Bis(thiol-cyclodextrin)-Coumarin C153 Complexes. Chemphyschem 2015; 16:2466-73. [DOI: 10.1002/cphc.201500119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2015] [Revised: 04/25/2015] [Indexed: 11/08/2022]
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619
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Lin Y, Zhou Q, Lin Y, Tang D, Niessner R, Knopp D. Enzymatic Hydrolysate-Induced Displacement Reaction with Multifunctional Silica Beads Doped with Horseradish Peroxidase–Thionine Conjugate for Ultrasensitive Electrochemical Immunoassay. Anal Chem 2015; 87:8531-40. [DOI: 10.1021/acs.analchem.5b02253] [Citation(s) in RCA: 89] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Youxiu Lin
- Key
Laboratory of Analysis and Detection for Food Safety (Ministry of
Education and Fujian Province), Institute of Nanomedicine and Nanobiosensing,
Department of Chemistry, Fuzhou University, Fuzhou 350108, People’s Republic of China
| | - Qian Zhou
- Key
Laboratory of Analysis and Detection for Food Safety (Ministry of
Education and Fujian Province), Institute of Nanomedicine and Nanobiosensing,
Department of Chemistry, Fuzhou University, Fuzhou 350108, People’s Republic of China
| | - Yuping Lin
- Key
Laboratory of Analysis and Detection for Food Safety (Ministry of
Education and Fujian Province), Institute of Nanomedicine and Nanobiosensing,
Department of Chemistry, Fuzhou University, Fuzhou 350108, People’s Republic of China
| | - Dianping Tang
- Key
Laboratory of Analysis and Detection for Food Safety (Ministry of
Education and Fujian Province), Institute of Nanomedicine and Nanobiosensing,
Department of Chemistry, Fuzhou University, Fuzhou 350108, People’s Republic of China
| | - Reinhard Niessner
- Chair
for Analytical Chemistry, Institute of Hydrochemistry, Technische Universität München, Marchioninistrasse 17, D-81377 München, Germany
| | - Dietmar Knopp
- Chair
for Analytical Chemistry, Institute of Hydrochemistry, Technische Universität München, Marchioninistrasse 17, D-81377 München, Germany
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620
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The Fluorescence Properties of Three Rhodamine Dye Analogues: Acridine Red, Pyronin Y and Pyronin B. J Fluoresc 2015; 25:1151-8. [DOI: 10.1007/s10895-015-1610-5] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2015] [Accepted: 06/30/2015] [Indexed: 11/30/2022]
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621
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Noriega R, Finley DT, Haberstroh J, Geissler PL, Francis MB, Ginsberg NS. Manipulating Excited-State Dynamics of Individual Light-Harvesting Chromophores through Restricted Motions in a Hydrated Nanoscale Protein Cavity. J Phys Chem B 2015; 119:6963-73. [PMID: 26035585 DOI: 10.1021/acs.jpcb.5b03784] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Manipulating the photophysical properties of light-absorbing units is a crucial element in the design of biomimetic light-harvesting systems. Using a highly tunable synthetic platform combined with transient absorption and time-resolved fluorescence measurements and molecular dynamics simulations, we interrogate isolated chromophores covalently linked to different positions in the interior of the hydrated nanoscale cavity of a supramolecular protein assembly. We find that, following photoexcitation, the time scales over which these chromophores are solvated, undergo conformational rearrangements, and return to the ground state are highly sensitive to their position within this cavity and are significantly slower than in a bulk aqueous solution. Molecular dynamics simulations reveal the hindered translations and rotations of water molecules within the protein cavity with spatial specificity. The results presented herein show that fully hydrated nanoscale protein cavities are a promising way to mimic the tight protein pockets found in natural light-harvesting complexes. We also show that the interplay between protein, solvent, and chromophores can be used to substantially tune the relaxation processes within artificial light-harvesting assemblies in order to significantly improve the yield of interchromophore energy transfer and extend the range of excitation transport. Our observations have implications for other important, similarly sized bioinspired materials, such as nanoreactors and biocompatible targeted delivery agents.
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Affiliation(s)
| | | | | | | | | | - Naomi S Ginsberg
- ∇Kavli Energy NanoSciences Institute, Berkeley, California 94720, United States
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622
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Effect of solvents and cyclodextrin complexation on acid–base and photophysical properties of dapoxyl dye. J Photochem Photobiol A Chem 2015. [DOI: 10.1016/j.jphotochem.2015.03.001] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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623
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Liao X, Guo L, Chang J, Liu S, Xie M, Chen G. Thermoresponsive AuNPs Stabilized by Pillararene-Containing Polymers. Macromol Rapid Commun 2015; 36:1492-7. [DOI: 10.1002/marc.201500167] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2015] [Revised: 05/03/2015] [Indexed: 11/12/2022]
Affiliation(s)
- Xiaojuan Liao
- School of Chemistry and Molecular Engineering; East China Normal University; Shanghai 200241 China
- State Key Laboratory of Molecular Engineering of Polymers; Department of Macromolecular Science; Fudan University; Shanghai 200433 China
| | - Lei Guo
- School of Chemistry and Molecular Engineering; East China Normal University; Shanghai 200241 China
| | - Junxia Chang
- School of Chemistry and Molecular Engineering; East China Normal University; Shanghai 200241 China
| | - Sha Liu
- School of Chemistry and Molecular Engineering; East China Normal University; Shanghai 200241 China
| | - Meiran Xie
- School of Chemistry and Molecular Engineering; East China Normal University; Shanghai 200241 China
| | - Guosong Chen
- State Key Laboratory of Molecular Engineering of Polymers; Department of Macromolecular Science; Fudan University; Shanghai 200433 China
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624
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Carvalho CP, Domínguez Z, Da Silva JP, Pischel U. A supramolecular keypad lock. Chem Commun (Camb) 2015; 51:2698-701. [PMID: 25574596 DOI: 10.1039/c4cc09336d] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
The reversible photoswitching between an anthracene derivative and its [4+4] dimer, using the template effect of the CB8 macrocycle, was demonstrated. This example of supramolecular chemistry in water was harnessed to demonstrate the operation of a keypad lock device that is driven by means of light and chemicals as inputs.
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Affiliation(s)
- Cátia Parente Carvalho
- CIQSO - Center for Research in Sustainable Chemistry and Department of Chemical Engineering, Physical Chemistry and Organic Chemistry, University of Huelva, Campus El Carmen s/n, E-21071 Huelva, Spain.
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625
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Xu L, Wang YX, Yang HB. Recent advances in the construction of fluorescent metallocycles and metallocages via coordination-driven self-assembly. Dalton Trans 2015; 44:867-90. [PMID: 25429665 DOI: 10.1039/c4dt02996h] [Citation(s) in RCA: 126] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
During the last few years, the construction of fluorescent metallocycles and metallocages has attracted considerable attention because of their wide applications in fluorescence detection of metal ions, anions, or small molecules, mimicking complicated natural photo-processes, and preparing photoelectric devices, etc. This perspective focuses on the recent advances in the construction of a variety of fluorescent metallocycles and metallocages via coordination-driven self-assembly. In addition, the fluorescence properties and the applications of these organometallic architectures have also been discussed.
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Affiliation(s)
- Lin Xu
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, Department of Chemistry, East China Normal University, 3663 N. Zhongshan Road, Shanghai, 200062, People's Republic of China.
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626
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Yousuf S, Alex R, Selvakumar PM, Enoch IVMV, Subramanian PS, Sun Y. Picking Out Logic Operations in a Naphthalene β-Diketone Derivative by Using Molecular Encapsulation, Controlled Protonation, and DNA Binding. ChemistryOpen 2015; 4:497-508. [PMID: 26478846 PMCID: PMC4603412 DOI: 10.1002/open.201500034] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2015] [Indexed: 12/02/2022] Open
Abstract
On–off switching and molecular logic in fluorescent molecules are associated with what chemical inputs can do to the structure and dynamics of these molecules. Herein, we report the structure of a naphthalene derivative, the fashion of its binding to β-cyclodextrin and DNA, and the operation of logic possible using protons, cyclodextrin, and DNA as chemical inputs. The compound crystallizes out in a keto-amine form, with intramolecular N−H⋅⋅⋅O bonding. It shows stepwise formation of 1:1 and 1:2 inclusion complexes with β-cyclodextrin. The aminopentenone substituents are encapsulated by β-cyclodextrin, leaving out the naphthalene rings free. The binding constant of the β-cyclodextrin complex is 512 m−1. The pKa value of the guest molecule is not greatly affected by the complexation. Dual input logic operations, based on various chemical inputs, lead to the possibility of several molecular logic gates, namely NOR, XOR, NAND, and Buffer. Such chemical inputs on the naphthalene derivative are examples of how variable signal outputs based on binding can be derived, which, in turn, are dependent on the size and shape of the molecule.
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Affiliation(s)
- Sameena Yousuf
- Department of Chemistry, Karunya University Coimbatore, 641114, Tamil Nadu, India
| | - Ritty Alex
- Department of Chemistry, Karunya University Coimbatore, 641114, Tamil Nadu, India
| | | | - Israel V M V Enoch
- Department of Chemistry, Karunya University Coimbatore, 641114, Tamil Nadu, India
| | - Palani Sivagnana Subramanian
- Department of Inorganic Materials and Catalysis, Central Salt and Marine Chemicals Research Institute Gujarat, 364021, India
| | - Yu Sun
- Faculty of Chemistry, Kaiserslautern University of Technology 67663, Kaiserslautern, Germany
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627
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Zakharova GV, Zhizhimov DA, Sazonov SK, Avakyan VG, Gromov SP, Görner H, Chibisov AK. Photoprocesses of alkyl meso-thiacarbocyanine dyes in the presence of cucurbit[7]uril. J Photochem Photobiol A Chem 2015. [DOI: 10.1016/j.jphotochem.2015.01.011] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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628
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Competitive recognition between 1:2 ternary complex of zwitterion and H3PO4 towards 3D cucurbit[8]uril frameworks. J INCL PHENOM MACRO 2015. [DOI: 10.1007/s10847-015-0479-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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629
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Cao M, Hu F, Han X, Zhang Y, Wu D, Liu SH, Yin J. Aggregation Control of Hemicyanine Fluorescent Dye by Using of Cucurbit[7]uril and Pillar[6]arene. CHINESE J CHEM 2015. [DOI: 10.1002/cjoc.201400881] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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630
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631
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Ni XL, Xue SF, Tao Z, Zhu QJ, Lindoy LF, Wei G. Advances in the lanthanide metallosupramolecular chemistry of the cucurbit[n]urils. Coord Chem Rev 2015. [DOI: 10.1016/j.ccr.2014.12.018] [Citation(s) in RCA: 82] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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632
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Bhowmick S, Chakraborty S, Das A, Rajamohanan PR, Das N. Pyrazine-Based Organometallic Complex: Synthesis, Characterization, and Supramolecular Chemistry. Inorg Chem 2015; 54:2543-50. [DOI: 10.1021/ic502581x] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Sourav Bhowmick
- Department of Chemistry, Indian Institute of Technology Patna, Patna 800 013, Bihar, India
| | - Sourav Chakraborty
- Department of Chemistry, Indian Institute of Technology Patna, Patna 800 013, Bihar, India
| | - Atanu Das
- Department of Chemistry, University of Texas at Austin, Austin, Texas 78712, United States
| | - P. R. Rajamohanan
- Central NMR Facility, CSIR National Chemical Laboratory, Dr. Homi Bhabha Road, Pune 411008, India
| | - Neeladri Das
- Department of Chemistry, Indian Institute of Technology Patna, Patna 800 013, Bihar, India
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633
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You L, Zha D, Anslyn EV. Recent Advances in Supramolecular Analytical Chemistry Using Optical Sensing. Chem Rev 2015; 115:7840-92. [PMID: 25719867 DOI: 10.1021/cr5005524] [Citation(s) in RCA: 624] [Impact Index Per Article: 69.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Lei You
- †State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, 35002, People's Republic of China
| | - Daijun Zha
- †State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, 35002, People's Republic of China
| | - Eric V Anslyn
- ‡Department of Chemistry, The University of Texas at Austin, Austin, Texas 78712, United States
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634
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Li Q, Zhang YQ, Zhu QJ, Xue SF, Tao Z, Xiao X. Coordination of Alkaline Earth Metal Ions in the Inverted Cucurbit[7]uril Supramolecular Assemblies Formed in the Presence of [ZnCl4]2−and [CdCl4]2−. Chem Asian J 2015; 10:1159-64. [DOI: 10.1002/asia.201500003] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2015] [Indexed: 01/16/2023]
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635
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Qu DH, Wang QC, Zhang QW, Ma X, Tian H. Photoresponsive Host–Guest Functional Systems. Chem Rev 2015; 115:7543-88. [DOI: 10.1021/cr5006342] [Citation(s) in RCA: 622] [Impact Index Per Article: 69.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Da-Hui Qu
- Key Laboratory for Advanced Materials & Institute of Fine Chemicals, East China University of Science & Technology, Meilong Road 130, Shanghai 200237, P. R. China
| | - Qiao-Chun Wang
- Key Laboratory for Advanced Materials & Institute of Fine Chemicals, East China University of Science & Technology, Meilong Road 130, Shanghai 200237, P. R. China
| | - Qi-Wei Zhang
- Key Laboratory for Advanced Materials & Institute of Fine Chemicals, East China University of Science & Technology, Meilong Road 130, Shanghai 200237, P. R. China
| | - Xiang Ma
- Key Laboratory for Advanced Materials & Institute of Fine Chemicals, East China University of Science & Technology, Meilong Road 130, Shanghai 200237, P. R. China
| | - He Tian
- Key Laboratory for Advanced Materials & Institute of Fine Chemicals, East China University of Science & Technology, Meilong Road 130, Shanghai 200237, P. R. China
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636
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Shinde MN, Dutta Choudhury S, Barooah N, Pal H, Bhasikuttan AC, Mohanty J. Metal-ion-mediated assemblies of thiazole orange with cucurbit[7]uril: a photophysical study. J Phys Chem B 2015; 119:3815-23. [PMID: 25658219 DOI: 10.1021/jp512802u] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The formation of molecular superstructures by metal-ion-mediated noncovalent self-assembly has been demonstrated using the macrocycle, cucurbit[7]uril (CB7), and the dye, thiazole orange (TO), as building blocks. Interestingly, the association of these molecular building blocks can be tuned by the chemical environment, leading to self-assembled structures of different stoichiometries, which is supported by absorption, fluorescence, (1)H NMR, and AFM measurements. Most importantly, the self-assembly process of the CB7/TO/metal ion system is observed to be remarkably different for alkali (Na(+)) and alkaline earth (Ca(2+)) metal ions. Fluorescence enhancement is observed in the presence of Ca(2+) ions, which is attributed to the formation of short dimeric structures composed of two 1:1 CB7-TO complexes. Solution turbidity is detected in the presence of Na(+) ions, which is proposed to be due to the formation of extended structures by the assembly of many 1:1 CB7-TO complexes.
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Affiliation(s)
- Meenakshi N Shinde
- Radiation & Photochemistry Division, Bhabha Atomic Research Centre , Mod. Lab., Mumbai 400085, Maharashtra, India
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637
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Liu H, Yang P, Wan D. The accessibility of a unimolecular micelle's core to environmental ions: Exploration with a xanthene dye. ACTA ACUST UNITED AC 2015. [DOI: 10.1002/polb.23671] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Honghai Liu
- Institute of Functional Polymers; School of Materials Science and Engineering; Tongji University; 4800 Cao-an Road Shanghai 201804 China
| | - Pengfei Yang
- Institute of Functional Polymers; School of Materials Science and Engineering; Tongji University; 4800 Cao-an Road Shanghai 201804 China
| | - Decheng Wan
- Institute of Functional Polymers; School of Materials Science and Engineering; Tongji University; 4800 Cao-an Road Shanghai 201804 China
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638
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Hou HT, Chen WJ, Zhang YQ, Zhu QJ, Xue SF, Tao Z. Coordination and supramolecular assemblies of meta-hexamethyl-substituted cucurbit[6]uril with alkali metal ions. Polyhedron 2015. [DOI: 10.1016/j.poly.2014.08.036] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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639
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Synthesis and evaluation of a new Rhodamine B and Di(2-picolyl)amine conjugate as a highly sensitive and selective chemosensor for Al3+ and its application in living-cell imaging. Bioorg Med Chem 2015; 23:694-702. [DOI: 10.1016/j.bmc.2014.12.070] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2014] [Revised: 12/29/2014] [Accepted: 12/30/2014] [Indexed: 12/20/2022]
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640
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Sayed M, Sundararajan M, Mohanty J, Bhasikuttan AC, Pal H. Photophysical and Quantum Chemical Studies on the Interactions of Oxazine-1 Dye with Cucurbituril Macrocycles. J Phys Chem B 2015; 119:3046-57. [DOI: 10.1021/jp509243j] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Mhejabeen Sayed
- Radiation & Photochemistry Division and ‡Theoretical Chemistry Section, Chemistry Group, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India
| | - Mahesh Sundararajan
- Radiation & Photochemistry Division and ‡Theoretical Chemistry Section, Chemistry Group, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India
| | - Jyotirmayee Mohanty
- Radiation & Photochemistry Division and ‡Theoretical Chemistry Section, Chemistry Group, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India
| | - Achikanath C. Bhasikuttan
- Radiation & Photochemistry Division and ‡Theoretical Chemistry Section, Chemistry Group, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India
| | - Haridas Pal
- Radiation & Photochemistry Division and ‡Theoretical Chemistry Section, Chemistry Group, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India
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641
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Wang G, Kang Y, Tang B, Zhang X. Tuning the surface activity of gemini amphiphile by the host-guest interaction of cucurbit[7]uril. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2015; 31:120-124. [PMID: 25489870 DOI: 10.1021/la504410q] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
This research is aimed to develop an effective supramolecular route for tuning the surface activity of the surfactant. To this end, cationic gemini amphiphiles and cucurbit[7]uril (CB[7]) were complexed in water, and each hydrophobic chain of the gemini amphiphiles was bound with a CB[7]. The steric hindrance of CB[7] prevented the two hydrophobic chains from getting closed to each other, leading a significant change of surface activity. Before supramolecular complexation, the surface activity of the gemini amphiphile is relatively high, which can generate the foams easily. However, the foam generated by gemini amphiphile can be destructed by adding CB[7], suggesting that the suface activity is lowed after the supramolecular complexation. The surface activity can recover after adding 1-adamantanamine hydrochloride, which has a stronger ability to bind CB[7]. Therefore, a controllable foaming and defoaming process can be realized. It is highly anticipated that supramolecular chemistry for tuning amphiphilicity of surfactants may find application in the fields that fast foaming and defoaming are needed.
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Affiliation(s)
- Guangtong Wang
- Key Lab of Organic Optoelectronics & Molecular Engineering, Department of Chemistry, Tsinghua University , Beijing 100084, China
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642
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Preparation and chromatographic performance evaluation of cucurbit[7]uril immobilized silica. J Chromatogr A 2015; 1376:64-73. [DOI: 10.1016/j.chroma.2014.12.002] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2014] [Revised: 12/02/2014] [Accepted: 12/02/2014] [Indexed: 11/20/2022]
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643
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Gupta VK, Singh RA. An investigation on single crystal growth, structural, thermal and optical properties of a series of organic D–π–A push–pull materials. RSC Adv 2015. [DOI: 10.1039/c5ra04907e] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
We present the large single crystal growth of a series of donor–π–acceptor (D–π–A) push–pull chromophores (1–4). The thermal, structural and optical properties of the synthesized chromophores were explored. These studies indicate the potential opto-electronic application of these push–pull chromophores.
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Affiliation(s)
- Vinod Kumar Gupta
- Department of Chemistry
- Centre of Advanced Study
- Faculty of Science
- Banaras Hindu University
- Varanasi-221 005
| | - Ram Adhar Singh
- Department of Chemistry
- Centre of Advanced Study
- Faculty of Science
- Banaras Hindu University
- Varanasi-221 005
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644
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Pal K, Mallick S, Koner AL. Complexation induced fluorescence and acid–base properties of dapoxyl dye with γ-cyclodextrin: a drug-binding application using displacement assays. Phys Chem Chem Phys 2015; 17:16015-22. [DOI: 10.1039/c5cp01696g] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The drug binding ability of γ-cyclodextrin in physiological conditions is evaluated experimentally and computationally via the dye displacement principle using dapoxyl dye.
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Affiliation(s)
- Kaushik Pal
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal
- Bhopal
- India
| | - Suman Mallick
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal
- Bhopal
- India
| | - Apurba L. Koner
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal
- Bhopal
- India
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645
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Murudkar S, Mora AK, Singh PK, Bandyopadhyay T, Nath S. An ultrafast molecular rotor based ternary complex in a nanocavity: a potential “turn on” fluorescence sensor for the hydrocarbon chain. Phys Chem Chem Phys 2015; 17:5691-703. [DOI: 10.1039/c4cp04636f] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Formation of a ternary complex by an ultrafast molecular rotor (UMR) with a macrocyclic cavitand has been investigated for the sensitive detection of the alkyl chain of a surfactant.
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Affiliation(s)
- Sushant Murudkar
- Radiation & Photochemistry Division
- Bhabha Atomic Research Centre
- Mumbai 400 085
- India
| | - Aruna K. Mora
- Radiation & Photochemistry Division
- Bhabha Atomic Research Centre
- Mumbai 400 085
- India
| | - Prabhat K. Singh
- Radiation & Photochemistry Division
- Bhabha Atomic Research Centre
- Mumbai 400 085
- India
| | - Tusar Bandyopadhyay
- Theoretical Chemistry Section
- Bhabha Atomic Research Centre
- Mumbai 400 085
- India
| | - Sukhendu Nath
- Radiation & Photochemistry Division
- Bhabha Atomic Research Centre
- Mumbai 400 085
- India
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646
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Assaf KI, Nau WM. Cucurbiturils: from synthesis to high-affinity binding and catalysis. Chem Soc Rev 2015; 44:394-418. [DOI: 10.1039/c4cs00273c] [Citation(s) in RCA: 922] [Impact Index Per Article: 102.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Major developments in the synthesis of cucurbiturils and applications related to their high-affinity binding and catalysis have recently taken place.
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647
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Zhao W, Wang C, Zhang Y, Xue S, Zhu Q, Tao Z. Supramolecular assembly of a methyl-substituted cucurbit[6]uril and its potential applications in selective sorption. NEW J CHEM 2015. [DOI: 10.1039/c5nj00255a] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Assembly of a methyl-substituted cucurbit[6]uril derived from 3α-methyl-glycoluril (HMeQ[6]) has been studied. We have demonstrated potential applications of this system based on the selective sorption of volatile alcohols in the polar channels, especially methanol.
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Affiliation(s)
- Wenxuan Zhao
- Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province
- Guizhou University
- Guiyang 550025
- China
| | - Chuanzeng Wang
- Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province
- Guizhou University
- Guiyang 550025
- China
| | - Yunqian Zhang
- Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province
- Guizhou University
- Guiyang 550025
- China
| | - Saifeng Xue
- Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province
- Guizhou University
- Guiyang 550025
- China
| | - Qianjiang Zhu
- Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province
- Guizhou University
- Guiyang 550025
- China
| | - Zhu Tao
- Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province
- Guizhou University
- Guiyang 550025
- China
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648
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Farcas A, Aubert PH, Mohanty J, Lazar AI, Cantin S, Nau WM. Molecular wire formation from poly[2,7-(9,9-dioctylfluorene)-alt-(5,5′-bithiophene/cucurbit[7]uril)] polyrotaxane copolymer. Eur Polym J 2015. [DOI: 10.1016/j.eurpolymj.2014.11.021] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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649
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Gavvala K, Satpathi S, Hazra P. pH responsive translocation of an anticancer drug between cyclodextrin and DNA. RSC Adv 2015. [DOI: 10.1039/c5ra19839a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
Herein, the pH triggered translocation of EPT in between γ-cyclodextrin and DNA is monitored using fluorescence switch of the drug.
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Affiliation(s)
- Krishna Gavvala
- Department of Chemistry
- Indian Institute of Science Education and Research (IISER)
- Pune 411008
- India
| | - Sagar Satpathi
- Department of Chemistry
- Indian Institute of Science Education and Research (IISER)
- Pune 411008
- India
| | - Partha Hazra
- Department of Chemistry
- Indian Institute of Science Education and Research (IISER)
- Pune 411008
- India
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650
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Barooah N, Mohanty J, Bhasikuttan AC. Cucurbit[8]uril-templated H and J dimers of bichromophoric coumarin dyes: origin of contrasting emission. Chem Commun (Camb) 2015; 51:13225-8. [DOI: 10.1039/c5cc05033b] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Supramolecular control of the novel dimer emission from bichromophoric coumarin dyes caught in the cucurbit[8]uril cavity; a facile approach to developing photo-responsive molecular assemblies.
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Affiliation(s)
- Nilotpal Barooah
- Radiation & Photochemistry Division
- Bhabha Atomic Research Centre
- Mumbai
- India
| | - Jyotirmayee Mohanty
- Radiation & Photochemistry Division
- Bhabha Atomic Research Centre
- Mumbai
- India
- Homi Bhabha National Institute
| | - Achikanath C. Bhasikuttan
- Radiation & Photochemistry Division
- Bhabha Atomic Research Centre
- Mumbai
- India
- Homi Bhabha National Institute
| |
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