1
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Karmakar P, Finnegan TJ, Rostam DC, Taneja S, Uçar S, Hansen AL, Moore CE, Hadad CM, Pratumyot K, Parquette JR, Badjić JD. Molecular bowls for inclusion complexation of toxic anticancer drug methotrexate. Chem Sci 2024; 15:10155-10163. [PMID: 38966368 PMCID: PMC11220613 DOI: 10.1039/d3sc05627a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2023] [Accepted: 05/13/2024] [Indexed: 07/06/2024] Open
Abstract
We describe the preparation and study of novel cavitands, molecular bowls 16+ and 26+, as good binders of the anticancer drug methotrexate (MTX). Molecular bowls are comprised of a curved tribenzotriquinacene (TBTQ) core conjugated to three macrocyclic pyridinium units at the top. The cavitands are easily accessible via two synthetic steps from hexabromo-tribenzotriquinacene in 25% yield. As amphiphilic molecules, bowls 16+ and 26+ self-associate in water by the nucleation-to-aggregation pathway (NMR). The bowls are preorganized, having a semi-rigid framework comprising a fixed bottom with a wobbling pyridinium rim (VT NMR and MD). Further studies, both experimental (NMR) and computational (DFT and MCMM), suggested that a folded MTX occupies the cavity of bowls wherein it forms π-π, C-H-π, and ion pairing intermolecular contacts but also undergoes desolvation to give stable binary complexes (μM) in water. Moreover, a computational protocol is introduced to identify docking pose(s) of MTX inside molecular bowls from NMR shielding data. Both molecular bowls have shown in vitro biocompatibility with liver and kidney cell lines (MTS assay). As bowl 26+ is the strongest binder of MTX reported to date, we envision it as an excellent candidate for further studies on the way toward developing an antidote capable of removing MTX from overdosed cancer patients.
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Affiliation(s)
- Pratik Karmakar
- Department of Chemistry and Biochemistry, The Ohio State University 100 West 18th Avenue Columbus Ohio 43210 USA
- Supramolecular Chemistry Research Unit, Department of Chemistry, Faculty of Science, King Mongkut's University of Technology Thonburi 126 Pracha Uthit Road, Bang Mod, Thung Khru Bangkok 10140 Thailand
| | - Tyler J Finnegan
- Department of Chemistry and Biochemistry, The Ohio State University 100 West 18th Avenue Columbus Ohio 43210 USA
| | - Darian C Rostam
- Department of Chemistry and Biochemistry, The Ohio State University 100 West 18th Avenue Columbus Ohio 43210 USA
| | - Sagarika Taneja
- Department of Chemistry and Biochemistry, The Ohio State University 100 West 18th Avenue Columbus Ohio 43210 USA
| | - Sefa Uçar
- Department of Chemistry and Biochemistry, The Ohio State University 100 West 18th Avenue Columbus Ohio 43210 USA
- Atatürk University, Faculty of Science, Department of Chemistry Erzurum 25240 Turkey
| | - Alexandar L Hansen
- Campus Chemical Instrumentation Center, The Ohio State University 100 West 18th Avenue Columbus Ohio 43210 USA
| | - Curtis E Moore
- Department of Chemistry and Biochemistry, The Ohio State University 100 West 18th Avenue Columbus Ohio 43210 USA
| | - Christopher M Hadad
- Department of Chemistry and Biochemistry, The Ohio State University 100 West 18th Avenue Columbus Ohio 43210 USA
| | - Kornkanya Pratumyot
- Supramolecular Chemistry Research Unit, Department of Chemistry, Faculty of Science, King Mongkut's University of Technology Thonburi 126 Pracha Uthit Road, Bang Mod, Thung Khru Bangkok 10140 Thailand
| | - Jon R Parquette
- Department of Chemistry and Biochemistry, The Ohio State University 100 West 18th Avenue Columbus Ohio 43210 USA
| | - Jovica D Badjić
- Department of Chemistry and Biochemistry, The Ohio State University 100 West 18th Avenue Columbus Ohio 43210 USA
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2
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Finnegan TJ, Mortensen C, Badjić JD. Molecular baskets form inclusion complexes with phenethylamine drugs in water. Chem Commun (Camb) 2024. [PMID: 38273731 DOI: 10.1039/d3cc05485c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2024]
Abstract
Molecular basket 16- comprising a nonpolar cavity and an anionic nest of six carboxylates at its rim was found to form inclusion complexes with (1R, 2S)-ephedrine, (1R, 2R)-pseudoephedrine, and (1S, 2R)-tranylcypromine. Experimental results (NMR) and theory (MM/DFT) suggest the basket encapsulates phenethylamines in unique and predictable fashion.
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Affiliation(s)
- Tyler J Finnegan
- The Ohio State University, Department of Chemistry & Biochemistry, 100 W 18th Avenue, Columbus, OH 43210, USA.
| | - Christopher Mortensen
- The Ohio State University, Department of Chemistry & Biochemistry, 100 W 18th Avenue, Columbus, OH 43210, USA.
| | - Jovica D Badjić
- The Ohio State University, Department of Chemistry & Biochemistry, 100 W 18th Avenue, Columbus, OH 43210, USA.
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3
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Nowag J, Brauser M, Steuernagel L, Wende RC, Schreiner PR, Thiele CM. Quantifying Intermolecular Interactions in Asymmetric Peptide Organocatalysis as a Key toward Understanding Selectivity. J Am Chem Soc 2024; 146:170-180. [PMID: 38117177 DOI: 10.1021/jacs.3c06378] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2023]
Abstract
The kinetic resolution of trans-cyclohexane-1,2-diol with a lipophilic oligopeptide catalyst shows extraordinary selectivities. To improve our understanding of the factors governing selectivity, we quantified the Gibbs free energies of interactions of the peptide with both enantiomers of trans-cyclohexane-1,2-diol using nuclear magnetic resonance (NMR) spectroscopy. For this, we use advanced methods such as transverse relaxation (R2), diffusion measurements, saturation transfer difference (STD), and chemical shift (δ) analysis of peptide-diol mixtures upon varying their composition (NMR titrations). The methods employed give comparable and consistent results. The molecular recognition by the catalyst is approximately 3 kJ mol-1 in favor of the preferentially acetylated (R,R)-enantiomer in the temperature range studied. Interestingly, the difference of 3 kJ mol-1 is also confirmed by results from reaction monitoring of the acylation step under catalytic conditions, indicating that this finding is true regardless of whether the investigation is performed on the acetylated species or on the free catalyst. To arrive at these conclusions, the self-association of both the catalyst and the substrate in toluene was found to play an important role and thus needs to be taken into account in reaction screening.
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Affiliation(s)
- Jens Nowag
- Clemens-Schöpf-Institut für Organische Chemie und Biochemie, Technische Universität Darmstadt, Peter-Grünberg-Straße 16, D-64287 Darmstadt, Germany
| | - Matthias Brauser
- Clemens-Schöpf-Institut für Organische Chemie und Biochemie, Technische Universität Darmstadt, Peter-Grünberg-Straße 16, D-64287 Darmstadt, Germany
| | - Lisa Steuernagel
- Clemens-Schöpf-Institut für Organische Chemie und Biochemie, Technische Universität Darmstadt, Peter-Grünberg-Straße 16, D-64287 Darmstadt, Germany
| | - Raffael C Wende
- Institute of Organic Chemistry, Justus Liebig University, Heinrich-Buff-Ring 17, D-35392 Giessen, Germany
| | - Peter R Schreiner
- Institute of Organic Chemistry, Justus Liebig University, Heinrich-Buff-Ring 17, D-35392 Giessen, Germany
| | - Christina M Thiele
- Clemens-Schöpf-Institut für Organische Chemie und Biochemie, Technische Universität Darmstadt, Peter-Grünberg-Straße 16, D-64287 Darmstadt, Germany
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4
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Salvadori K, Onali A, Mathez G, Eigner V, Dendisová M, Matějka P, Mullerová M, Brancale A, Cuřínová P. An Insight into Anion Extraction by Amphiphiles: Hydrophobic Microenvironments as a Requirement for the Extractant Selectivity. ACS OMEGA 2023; 8:44221-44228. [PMID: 38027376 PMCID: PMC10666219 DOI: 10.1021/acsomega.3c06767] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Revised: 10/13/2023] [Accepted: 10/18/2023] [Indexed: 12/01/2023]
Abstract
Coupling of electron-deficient urea units with aliphatic chains gives rise to amphiphilic compounds that bind to phosphate and benzoate anions in the hydrogen bonding competitive solvent (DMSO) with KAss = 6 580 M-1 and KAss = 4 100 M-1, respectively. The anchoring of these receptor moieties to the dendritic support does not result in a loss of anion binding and enables new applications. Due to the formation of a microenvironment in the dendrimer, the high selectivity of the prepared compound toward benzoate is maintained even in the presence of aqueous media during extraction experiments. In the presence of binding sites at 5 mM concentration, the amount of benzoate corresponding to the full binding site occupancy is transferred into the chloroform phase from its 10 mM aqueous solution. A thorough investigation of the extraction behavior of the dendrimer reported here, supported by a series of molecular dynamics simulations, provides new insight into the fundamental principles of extraction of inorganic anions by amphiphiles.
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Affiliation(s)
- Karolína Salvadori
- Department
of Physical Chemistry, University of Chemistry
and Technology Prague, Technická 5, Prague 6 16628, Czech Republic
- Department
of Bioorganic Chemistry and Biomaterials, Institute of Chemical Process Fundamentals of the CAS, v.v.i., Rozvojová 135, Prague 6 16502, Czech Republic
| | - Alessia Onali
- Department
of Organic Chemistry, University of Chemistry
and Technology Prague, Technická 5, Prague 6 16628, Czech Republic
| | - Gregory Mathez
- Department
of Organic Chemistry, University of Chemistry
and Technology Prague, Technická 5, Prague 6 16628, Czech Republic
| | - Václav Eigner
- Department
of Solid-State Chemistry, University of
Chemistry and Technology Prague, Technická 5, Prague 6 16628, Czech Republic
| | - Marcela Dendisová
- Department
of Physical Chemistry, University of Chemistry
and Technology Prague, Technická 5, Prague 6 16628, Czech Republic
| | - Pavel Matějka
- Department
of Physical Chemistry, University of Chemistry
and Technology Prague, Technická 5, Prague 6 16628, Czech Republic
| | - Monika Mullerová
- Department
of Bioorganic Chemistry and Biomaterials, Institute of Chemical Process Fundamentals of the CAS, v.v.i., Rozvojová 135, Prague 6 16502, Czech Republic
| | - Andrea Brancale
- Department
of Organic Chemistry, University of Chemistry
and Technology Prague, Technická 5, Prague 6 16628, Czech Republic
| | - Petra Cuřínová
- Department
of Organic Chemistry, University of Chemistry
and Technology Prague, Technická 5, Prague 6 16628, Czech Republic
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5
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Lohrman J, Pramanik S, Kaur S, Telikepalli H, Day VW, Bowman-James K. Hydrophilic and hydrophobic carboxamide pincers as anion hosts. Org Biomol Chem 2021; 19:8516-8520. [PMID: 34553743 DOI: 10.1039/d1ob01605a] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Hydrophobic and hydrophilic, monotopic and ditopic carboxamide pincer hosts containing ethyl, hexyl, 2-hydroxyethyl and 2-hydroxyethyl ethyl ether pendant arms were synthesized. Solubility trends indicated that solubilities in water or hydrocarbon solvents varied depending on the nature of the pendant arms. Binding constants for hydrophilic pincers were larger in general than their hydrophobic analogs. Significant synergistic binding effects for the ditopic hosts were not observed.
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Affiliation(s)
- Jessica Lohrman
- Department of Chemistry, University of Kansas, 1567 Irving Hill Road, Lawrence, Kansas 66045, USA.
| | - Subhamay Pramanik
- Department of Chemistry, University of Kansas, 1567 Irving Hill Road, Lawrence, Kansas 66045, USA.
| | - Sandeep Kaur
- Department of Chemistry, University of Kansas, 1567 Irving Hill Road, Lawrence, Kansas 66045, USA.
| | - Hanumaiah Telikepalli
- Department of Chemistry, University of Kansas, 1567 Irving Hill Road, Lawrence, Kansas 66045, USA.
| | - Victor W Day
- Department of Chemistry, University of Kansas, 1567 Irving Hill Road, Lawrence, Kansas 66045, USA.
| | - Kristin Bowman-James
- Department of Chemistry, University of Kansas, 1567 Irving Hill Road, Lawrence, Kansas 66045, USA.
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6
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Tian Y, Wang C, Wang G, Xu L, Wang H. Ag-Induced metallogel based on cyclooctatetrathiophene: structural characterization and stimuli-responsive properties. SOFT MATTER 2021; 17:341-345. [PMID: 33415325 DOI: 10.1039/d0sm01957g] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Based on saddle-shaped cyclooctathiophene (COTh) as a building block, ligands 2 and 3 were synthesized bearing 3- or 4-substituted pyridyl groups as coordination groups, which showed strong gelation abilities with AgBF4 in several solvents at room temperature. This Ag+-induced metallogel exhibited outstanding stimuli-responsive properties upon addition of halogen ions, acetonitrile or H2O.
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Affiliation(s)
- Yu Tian
- Engineering Research Center for Nanomaterials, Henan University, Kaifeng, 475004, China.
| | - Chenglong Wang
- Engineering Research Center for Nanomaterials, Henan University, Kaifeng, 475004, China.
| | - Guangxia Wang
- Engineering Research Center for Nanomaterials, Henan University, Kaifeng, 475004, China.
| | - Li Xu
- College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, China
| | - Hua Wang
- Engineering Research Center for Nanomaterials, Henan University, Kaifeng, 475004, China.
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7
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Wang D, Chen A, Morris J, Wang G. Stimuli-responsive gelators from carbamoyl sugar derivatives and their responses to metal ions and tetrabutylammonium salts. RSC Adv 2020; 10:40068-40083. [PMID: 35520864 PMCID: PMC9057480 DOI: 10.1039/d0ra07587f] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2020] [Accepted: 10/07/2020] [Indexed: 12/22/2022] Open
Abstract
Carbohydrate-based low molecular weight gelators (LMWGs) are interesting compounds with a variety of applications. In this research, a library of nineteen carbamate derivatives of N-acetyl-d-glucosamine were synthesized and characterized, and several derivatives were found to be effective LMWGs. They formed gels in pump oils as well as mixtures of water with ethanol or water with DMSO. The structures of the carbamoyl chains played an important role in the gelation properties, short chain aliphatic derivatives and phenyl carbamates formed gels in more solvents than certain aromatic and dimeric carbamates. The phenyl carbamate gelator was also selected for the encapsulation of naproxen sodium, and the drug slowly diffused from the gel to the aqueous phase as indicated by UV-vis spectroscopy. In addition, we also found that the p-methoxyl benzyl carbamate derivative showed interesting stimuli-responsive gelation properties in the presence of metal salts and tetrabutylammonium salts. The gels were characterized using optical microscopy, scanning electron microscopy, rheology and other methods. The self-assembling mechanisms of the gelators were studied using 1H NMR spectroscopy. The preparation, characterization, and molecular assembling properties of these compounds are reported. The results obtained from this study are useful for the design of other LMWGs and the sugar derivatives can be explored for different biological applications. The formation of spontaneous ionic gels can be applicable for a plethora of applications including catalysis and environmental remediation.
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Affiliation(s)
- Dan Wang
- Department of Chemistry and Biochemistry, Old Dominion University 4541 Hampton Boulevard Norfolk VA 23529-0126 USA +1 757 683 4628 +1 757 683 3781
| | - Anji Chen
- Department of Chemistry and Biochemistry, Old Dominion University 4541 Hampton Boulevard Norfolk VA 23529-0126 USA +1 757 683 4628 +1 757 683 3781
| | - Joedian Morris
- Department of Chemistry and Biochemistry, Old Dominion University 4541 Hampton Boulevard Norfolk VA 23529-0126 USA +1 757 683 4628 +1 757 683 3781
| | - Guijun Wang
- Department of Chemistry and Biochemistry, Old Dominion University 4541 Hampton Boulevard Norfolk VA 23529-0126 USA +1 757 683 4628 +1 757 683 3781
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8
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Gamble Jarvi A, Casto J, Saxena S. Buffer effects on site directed Cu 2+-labeling using the double histidine motif. JOURNAL OF MAGNETIC RESONANCE (SAN DIEGO, CALIF. : 1997) 2020; 320:106848. [PMID: 33164758 DOI: 10.1016/j.jmr.2020.106848] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2020] [Revised: 09/25/2020] [Accepted: 10/07/2020] [Indexed: 05/09/2023]
Abstract
The double histidine, or dHis, motif has emerged as a powerful spin labeling tool to determine the conformations and dynamics, subunit orientation, native metal binding site location, and other physical characteristics of proteins by Cu2+-based electron paramagnetic resonance. Here, we investigate the efficacy of this technique in five common buffer systems, and show that buffer choice can impact the loading of Cu2+-NTA into dHis sites, and more generally, the sensitivity of the overall technique. We also present a standardized and optimized examination of labeling of the dHis motif with Cu2+-NTA for EPR based distance measurements. We provide optimal loading procedures, using representative EPR and UV/Vis data for each step in the process. From this data, we find that maximal dHis loading can be achieved in under 30 min with low temperature sample incubation. Using only these optimal procedures, we see up to a 28% increase in fully labeled proteins compared to previously published results in N-ethylmorpholine. Using both this optimized procedure as well as a more optimal buffer, we can achieve up to 80% fully loaded proteins, which corresponds to a 64% increase compared to the prior data. These results provide insight and deeper understanding of the dHis Cu2+-NTA system, the variables that impact its efficacy, and present a method by which these issues may be mitigated for the most efficient labeling.
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Affiliation(s)
- Austin Gamble Jarvi
- Department of Chemistry, University of Pittsburgh, Pittsburgh, PA 15260, USA
| | - Joshua Casto
- Department of Chemistry, University of Pittsburgh, Pittsburgh, PA 15260, USA
| | - Sunil Saxena
- Department of Chemistry, University of Pittsburgh, Pittsburgh, PA 15260, USA.
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9
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Abstract
Synthetic K+-binding macrocycles have potential as therapeutic agents for diseases associated with KcsA K+ channel dysfunction. We recently discovered that artificial self-assembled n-alkyl-benzoureido-15-crown-5-ether form selective ion-channels for K+ cations, which are highly preferred to Na+ cations. Here, we describe an impressive selective activation of the K+ transport via electrogenic macrocycles, stimulated by the addition of the carbonyl cyanide-4-(trifluoromethoxy) phenylhydrazone (FCCP) proton carrier. The transport performances show that both the position of branching or the size of appended alkyl arms favor high transport activity and selectivity SK+/Na+ up to 48.8, one of the best values reported up to now. Our study demonstrates that high K+/Na+ selectivity obtained with natural KcsA K+ channels is achievable using simpler artificial macrocycles displaying constitutional functions.
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10
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Biswas P, Ganguly S, Dastidar P. Stimuli-Responsive Metallogels for Synthesizing Ag Nanoparticles and Sensing Hazardous Gases. Chem Asian J 2018; 13:1941-1949. [PMID: 29863308 DOI: 10.1002/asia.201800743] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2018] [Revised: 05/31/2018] [Indexed: 02/28/2024]
Abstract
A newly synthesized bis-pyridyl ligand having a diphenyl ether backbone (LP6) displayed the ability to form crystalline coordination polymers (CP1-CP6) which were fully characterized by single crystal X-ray diffraction. Most of the resulting polymers were lattice-occluded crystalline solids-a structural characteristic reminiscent to gels. The reactants of the coordination polymers produced metallogels in DMSO/water confirming the validity of the design principles with which the coordination polymers were synthesized. Some of the metallogels displayed material properties like in situ synthesis of Ag nanoparticles and stimuli-responsive gel-sol transition including sensing hazardous gases like ammonia and hydrogen sulfide.
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Affiliation(s)
- Protap Biswas
- Department of Organic Chemistry, Indian Association for the Cultivation of Science (IACS), 2A and 2B, Raja S. C. Mullick Road Jadavpur, Kolkata, 700032, West Bengal, India
| | - Sumi Ganguly
- Department of Organic Chemistry, Indian Association for the Cultivation of Science (IACS), 2A and 2B, Raja S. C. Mullick Road Jadavpur, Kolkata, 700032, West Bengal, India
| | - Parthasarathi Dastidar
- Department of Organic Chemistry, Indian Association for the Cultivation of Science (IACS), 2A and 2B, Raja S. C. Mullick Road Jadavpur, Kolkata, 700032, West Bengal, India
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11
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Ciancaleoni G. Cooperativity between hydrogen- and halogen bonds: the case of selenourea. Phys Chem Chem Phys 2018. [DOI: 10.1039/c8cp00353j] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
A combined experimental/theoretical investigation on the cooperativity between hydrogen- and halogen bonds is presented. In this study, it is shown that selenourea can interact at the same time with a benzoate anion and a polarized iodine, with the two interactions influencing and enhancing each other.
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Affiliation(s)
- Gianluca Ciancaleoni
- Università degli Studi di Pisa
- Dipartimento di Chimica e Chimica Industriale
- 13-56124 Pisa
- Italy
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12
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Kaur N, Kaur G, Fegade UA, Singh A, Sahoo SK, Kuwar AS, Singh N. Anion sensing with chemosensors having multiple NH recognition units. Trends Analyt Chem 2017. [DOI: 10.1016/j.trac.2017.08.003] [Citation(s) in RCA: 62] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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13
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Characterization of Halogen Bonded Adducts in Solution by Advanced NMR Techniques. MAGNETOCHEMISTRY 2017. [DOI: 10.3390/magnetochemistry3040030] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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14
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Dąbrowa K, Jurczak J. Tetra-(meta-butylcarbamoyl)azobenzene: A Rationally Designed Photoswitch with Binding Affinity for Oxoanions in a Long-Lived Z-State. Org Lett 2017; 19:1378-1381. [PMID: 28240890 DOI: 10.1021/acs.orglett.7b00267] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
A new photoswitchable anion receptor 1 based on a tetra-meta-substituted azobenzene skeleton has been readily synthesized in two steps. Titration studies (1H NMR) and theoretical predictions (DFT/M06-2X/6-31G(d)/DMSO-SM8) revealed that nonplanar Z-1 is a better host for anions than E-1, which results from the greater ability of four amide NH protons in the Z-state to cooperatively bind oxoanions, in particular tetrahedral H2PO4- and H2AsO4-. Furthermore, the thermal decay of Z-1 (τ1/2 = 11 days) is not accelerated by anion binding.
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Affiliation(s)
- Kajetan Dąbrowa
- Institute of Organic Chemistry, Polish Academy of Sciences , Kasprzaka 44/52, 01-224 Warsaw, Poland
| | - Janusz Jurczak
- Institute of Organic Chemistry, Polish Academy of Sciences , Kasprzaka 44/52, 01-224 Warsaw, Poland
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15
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Sun J, Sun J, Mi W, Xue P, Zhao J, Zhai L, Lu R. Carbazole modified salicylaldimines and their difluoroboron complexes: effect of the tert-butyl and trifluoromethyl terminal groups on organogelation and piezofluorochromism. NEW J CHEM 2017. [DOI: 10.1039/c6nj03063g] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Luminescent nanofibers were generated from nontraditional π-gelators based on salicylaldimines and their difluoroboron complex bearing tert-butyl carbazole and trifluoromethylbenzene.
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Affiliation(s)
- Jiabao Sun
- State Key Laboratory of Supramolecular Structure and Materials
- College of Chemistry
- Jilin University
- Changchun
- P. R. China
| | - Jingbo Sun
- State Key Laboratory of Supramolecular Structure and Materials
- College of Chemistry
- Jilin University
- Changchun
- P. R. China
| | - Wenhua Mi
- State Key Laboratory of Supramolecular Structure and Materials
- College of Chemistry
- Jilin University
- Changchun
- P. R. China
| | - Pengchong Xue
- State Key Laboratory of Supramolecular Structure and Materials
- College of Chemistry
- Jilin University
- Changchun
- P. R. China
| | - Jinyu Zhao
- State Key Laboratory of Supramolecular Structure and Materials
- College of Chemistry
- Jilin University
- Changchun
- P. R. China
| | - Lu Zhai
- State Key Laboratory of Supramolecular Structure and Materials
- College of Chemistry
- Jilin University
- Changchun
- P. R. China
| | - Ran Lu
- State Key Laboratory of Supramolecular Structure and Materials
- College of Chemistry
- Jilin University
- Changchun
- P. R. China
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16
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von Krbek LKS, Schalley CA, Thordarson P. Assessing cooperativity in supramolecular systems. Chem Soc Rev 2017; 46:2622-2637. [DOI: 10.1039/c7cs00063d] [Citation(s) in RCA: 162] [Impact Index Per Article: 23.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
In this tutorial review, different aspects of cooperativity in supramolecular chemistry and their thermodynamic analysis are discussed.
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Affiliation(s)
| | | | - Pall Thordarson
- School of Chemistry
- The Australian Centre for Nanomedicine and the ARC Centre of Excellence in Convergent Bio-Nano Science and Technology
- University of New South Wales
- Australia
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17
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Lohrman J, Telikepalli H, Johnson TS, Jackson TA, Day VW, Bowman-James K. Pyrazinetetracarboxamide: A Duplex Ligand for Palladium(II). Inorg Chem 2016; 55:5098-100. [DOI: 10.1021/acs.inorgchem.6b00594] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jessica Lohrman
- Department of Chemistry, University of Kansas, 1251 Wescoe Hall Drive, Lawrence, Kansas 66045, United States
| | - Hanumaiah Telikepalli
- Department of Chemistry, University of Kansas, 1251 Wescoe Hall Drive, Lawrence, Kansas 66045, United States
| | - Thomas S. Johnson
- Department of Chemistry, University of Kansas, 1251 Wescoe Hall Drive, Lawrence, Kansas 66045, United States
| | - Timothy A. Jackson
- Department of Chemistry, University of Kansas, 1251 Wescoe Hall Drive, Lawrence, Kansas 66045, United States
| | - Victor W. Day
- Department of Chemistry, University of Kansas, 1251 Wescoe Hall Drive, Lawrence, Kansas 66045, United States
| | - Kristin Bowman-James
- Department of Chemistry, University of Kansas, 1251 Wescoe Hall Drive, Lawrence, Kansas 66045, United States
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18
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Martin AD, Wojciechowski JP, Bhadbhade MM, Thordarson P. A Capped Dipeptide Which Simultaneously Exhibits Gelation and Crystallization Behavior. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:2245-50. [PMID: 26890360 DOI: 10.1021/acs.langmuir.5b03963] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Short peptides capped at their N-terminus are often highly efficient gelators, yet notoriously difficult to crystallize. This is due to strong unidirectional interactions within fibers, resulting in structure propagation only along one direction. Here, we synthesize the N-capped dipeptide, benzimidazole-diphenylalanine, which forms both hydrogels and single crystals. Even more remarkably, we show using atomic force microscopy the coexistence of these two distinct phases. We then use powder X-ray diffraction to investigate whether the single crystal structure can be extrapolated to the molecular arrangement within the hydrogel. The results suggest parallel β-sheet arrangement as the dominant structural motif, challenging existing models for gelation of short peptides, and providing new directions for the future rational design of short peptide gelators.
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Affiliation(s)
- Adam D Martin
- School of Chemistry, ‡The Australian Centre for Nanomedicine and the ARC Centre of Excellence for Convergent Bio-Nano Science and Technology, and §Mark Wainwright Analytical Centre, The University of New South Wales , Sydney, 2052 NSW, Australia
| | - Jonathan P Wojciechowski
- School of Chemistry, ‡The Australian Centre for Nanomedicine and the ARC Centre of Excellence for Convergent Bio-Nano Science and Technology, and §Mark Wainwright Analytical Centre, The University of New South Wales , Sydney, 2052 NSW, Australia
| | - Mohan M Bhadbhade
- School of Chemistry, ‡The Australian Centre for Nanomedicine and the ARC Centre of Excellence for Convergent Bio-Nano Science and Technology, and §Mark Wainwright Analytical Centre, The University of New South Wales , Sydney, 2052 NSW, Australia
| | - Pall Thordarson
- School of Chemistry, ‡The Australian Centre for Nanomedicine and the ARC Centre of Excellence for Convergent Bio-Nano Science and Technology, and §Mark Wainwright Analytical Centre, The University of New South Wales , Sydney, 2052 NSW, Australia
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19
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Datta PP, Kiesewetter MK. Controlled Organocatalytic Ring-Opening Polymerization of ε-Thionocaprolactone. Macromolecules 2016; 49:774-780. [PMID: 27182087 PMCID: PMC4862612 DOI: 10.1021/acs.macromol.6b00136] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
For the first time, the controlled ring-opening polymerization (ROP) of ε-thionocaprolactone (tnCL) is conducted. The organocatalytic ROP of tnCL occurs without carbonyl scrambling, leading to homopoly(ε-thionocaprolactone) (PtnCL). The ROP by base catalysts alone is proposed to proceed via a nucleophilic mechanism, while the addition of an H-bond donating thiourea (TU) is shown to provide excellent reaction control. The increased reaction control provided by the TU occurs in the virtual absence of binding between tnCL and TU, and a mechanistic account for this observation is discussed. The monomer ring strain is measured and found to be similar to δ-valerolactone (VL). Copolymers with VL are synthesized, and the resulting analysis of the copolymer materials properties provides the only known physical characterizations of poly(thio(no)ester-co-ester)s.
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Affiliation(s)
- Partha P Datta
- Department of Chemistry, University of Rhode Island, Kingston, Rhode Island 02881, United States
| | - Matthew K Kiesewetter
- Department of Chemistry, University of Rhode Island, Kingston, Rhode Island 02881, United States
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20
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Liu Y, Wang Y, Jin L, Chen T, Yin B. MPTTF-containing tripeptide-based organogels: receptor for 2,4,6-trinitrophenol and multiple stimuli-responsive properties. SOFT MATTER 2016; 12:934-945. [PMID: 26563974 DOI: 10.1039/c5sm02462e] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
A series of monopyrrolotetrathiafulvalene-tripeptide conjugates have been synthesized and investigated as new low-molecular mass organogelators. It was found that most of these compounds could immobilize low-polarity solvents readily and the gelation behaviors of these gelators showed a dependence on the amino acid residues. These organogels were thoroughly studied using various techniques including atomic force microscopy (AFM), field-emission scanning electron microscopy (FE-SEM), circular dichroism (CD) spectroscopy, Fourier-transform infrared (FT-IR) spectroscopy, (1)H NMR spectroscopy, UV-Vis absorption spectroscopy and X-ray diffraction (XRD). The results showed that the cooperative interplay of hydrogen bonding, π-π stacking and SS interactions were the main driving force for the formation of the gels. Of all the organogels, the aromatic solvent gels, such as toluene gel, exhibited multiple-stimulus responsiveness towards heating, shaking, chemical redox activity and the presence of anions, thus leading to reversible sol-gel phase transitions. Most interestingly, gelation in the presence of 2,4,6-trinitrophenol (TNP) in organic solvents could be observed visually with a concomitant color change through donor-acceptor interactions. The strength of the charge-transfer interaction between gelators and TNP was proportional to the incubation time and increasing critical gelation concentration (CGC). The gels could function as efficient absorbents for potential application in removal of crystal violet and rhodamine B dyes from water.
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Affiliation(s)
- Yucun Liu
- Key Laboratory of Natural Resources of Changbai Mountain & Functional Molecules, Yanbian University, Ministry of Education, Yanji, Jilin 133002, P. R. China.
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21
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Liu Y, Dai Y, Yin B. Gel properties of T-shaped tetrathiafulvalene–pyridazine conjugates and F4TCNQ-induced morphological transformation. NEW J CHEM 2016. [DOI: 10.1039/c5nj02322j] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
T-shaped organic π-conjugates and their F4TCNQ charge-transfer (CT) complexes are developed as LMOGs. The morphological changes of the organogels occur obviously due to the CT interaction.
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Affiliation(s)
- Yucun Liu
- Key Laboratory of Natural Resources of Changbai Mountain & Functional Molecules
- Yanbian University, Ministry of Education
- Yanji
- P. R. China
| | - Yanfeng Dai
- Key Laboratory of Natural Resources of Changbai Mountain & Functional Molecules
- Yanbian University, Ministry of Education
- Yanji
- P. R. China
| | - Bingzhu Yin
- Key Laboratory of Natural Resources of Changbai Mountain & Functional Molecules
- Yanbian University, Ministry of Education
- Yanji
- P. R. China
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22
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Ghosh A, Das P, Kaushik R, Damodaran KK, Jose DA. Anion responsive and morphology tunable tripodal gelators. RSC Adv 2016. [DOI: 10.1039/c6ra16345a] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
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23
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Kazakov OI, Kiesewetter MK. Cocatalyst Binding Effects in Organocatalytic Ring-Opening Polymerization of l-Lactide. Macromolecules 2015. [DOI: 10.1021/acs.macromol.5b01140] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Oleg I. Kazakov
- Department of Chemistry, University of Rhode Island, Kingston, Rhode Island 02881, United States
| | - Matthew K. Kiesewetter
- Department of Chemistry, University of Rhode Island, Kingston, Rhode Island 02881, United States
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24
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Liu CW, Su M, Li XL, Xue T, Liu N, Yin J, Zhu YY, Wu ZQ. Multi-stimuli-responsive chiral organogels based on peptide derivatives. SOFT MATTER 2015; 11:5727-5737. [PMID: 26083487 DOI: 10.1039/c5sm00115c] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
A series of chiral aryl amide compounds bearing peptide pendants have been investigated as low molecular weight gelators. A mechanistic study reveals that complementary hydrogen bonding from peptide pendants is the main driving force for the formation of organogels. This new class of organogels can exhibit multi-stimuli-responsive behavior upon applying (1) thermal, (2) pH, (3) enantiomeric purity, and (4) fluoride anion stimuli. Enantiomeric purity as a new external stimulus displays sensitive stimuli-responsiveness; only 0.02 equiv. of the enantiomer can completely disassemble the gel aggregate. They will serve as excellent smart materials with potential applications in chiral sensors, recognition, and separation.
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Affiliation(s)
- Chang-Wei Liu
- School of Chemistry and Chemical Engineering, Key Laboratory of Advanced Functional Materials and Devices, Hefei University of Technology, Hefei, Anhui Province, China.
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25
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Wu J, Kwon B, Liu W, Anslyn EV, Wang P, Kim JS. Chromogenic/Fluorogenic Ensemble Chemosensing Systems. Chem Rev 2015; 115:7893-943. [DOI: 10.1021/cr500553d] [Citation(s) in RCA: 293] [Impact Index Per Article: 32.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Jiasheng Wu
- Key
Laboratory of Photochemical Conversion and Optoelectronic Materials
and CityU-CAS Joint Laboratory of Functional Materials and Devices,
Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Bomi Kwon
- Department
of Chemistry, Korea University, Seoul 136-701, Korea
| | - Weimin Liu
- Key
Laboratory of Photochemical Conversion and Optoelectronic Materials
and CityU-CAS Joint Laboratory of Functional Materials and Devices,
Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Eric V. Anslyn
- Department
of Chemistry, The University of Texas at Austin, 105 E. 24th,
Street-Stop A5300, Austin, Texas 78712-1224, United States
| | - Pengfei Wang
- Key
Laboratory of Photochemical Conversion and Optoelectronic Materials
and CityU-CAS Joint Laboratory of Functional Materials and Devices,
Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Jong Seung Kim
- Department
of Chemistry, Korea University, Seoul 136-701, Korea
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26
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Miao W, Yang D, Liu M. Multiple-Stimulus-Responsive Supramolecular Gels and Regulation of Chiral Twists: The Effect of Spacer Length. Chemistry 2015; 21:7562-70. [DOI: 10.1002/chem.201500097] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2015] [Revised: 02/10/2015] [Indexed: 01/07/2023]
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27
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Piątek P, Zdanowski S, Romański J. Cooperative ion pair recognition by multitopic l-ornithine based salt receptors. NEW J CHEM 2015. [DOI: 10.1039/c4nj01865f] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
The development of l-ornithine based multitopic receptors allowed us to obtain an effective and selective salt receptor.
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Affiliation(s)
- Piotr Piątek
- Department of Chemistry
- University of Warsaw
- 02-093 Warsaw
- Poland
| | | | - Jan Romański
- Department of Chemistry
- University of Warsaw
- 02-093 Warsaw
- Poland
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28
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Jamieson SA, Tong KWK, Hamilton WA, He L, James M, Thordarson P. Small angle neutron scattering (SANS) studies on the structural evolution of pyromellitamide self-assembled gels. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2014; 30:13987-13993. [PMID: 25361640 DOI: 10.1021/la502546n] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The kinetics of aggregation of two pyromellitamide gelators, tetrabutyl- (C4) and tetrahexyl-pyromellitamide (C6), in deuterated cyclohexane has been investigated by small angle neutron scattering (SANS) for up to 6 days. The purpose of this study was to improve our understanding of how self-assembled gels are formed. Short-term (< 3 h) time scales revealed multiple phases with the data for the tetrabutylpyromellitamide C4, indicating one-dimensional stacking and aggregation corresponding to a multifiber braided cluster arrangement that is about 35 Å in diameter. The corresponding tetrahexylpyromellitamide C6 data suggest that the C6 also forms one-dimensional stacks but that these aggregate to a thicker multifiber braided cluster that has a diameter of about 62 Å. Over a longer period of time, the radius, persistence length, and contour length all continue to increase in 6 days after cooling. These data suggest that structural changes in self-assembled gels occur over a period exceeding several days and that fairly subtle changes in the structure (e.g., tail-length) can influence the packing of molecules in self-assembled gels on the single-to-few fiber bundle stage.
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Affiliation(s)
- Scott A Jamieson
- School of Chemistry and the Australian Centre for Nanomedicine, The University of New South Wales , Sydney, NSW 2052 Australia
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29
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Miao W, Qin L, Yang D, Jin X, Liu M. Multiple-Stimulus-Responsive Supramolecular Gels of Two Components and Dual Chiroptical Switches. Chemistry 2014; 21:1064-72. [DOI: 10.1002/chem.201405406] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2014] [Indexed: 12/24/2022]
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30
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Lin Q, Zhu X, Fu YP, Zhang YM, Fang R, Yang LZ, Wei TB. Rationally designed anion-responsive-organogels: sensing F⁻ via reversible color changes in gel-gel states with specific selectivity. SOFT MATTER 2014; 10:5715-23. [PMID: 24985608 DOI: 10.1039/c4sm00841c] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
Through the rational introduction of the multi self-assembly driving forces and F(-) sensing sites into a gelator molecule, low-molecular-weight organogelators L1 and L2 were designed and synthesized. L1 and L2 showed excellent gelation ability in DMF and DMSO. They could form stable organogels (OGL1 and OGL2) in DMF and DMSO with very low critical gelation concentrations. OGL1 and OGL2 could act as anion-responsive organogels (AROGs). Unlike most of the reported AROGs showing gel-sol phase transition according to the anions' stimulation, OGL1 could colorimetrically sense F(-) under gel-gel states. Upon addition of F(-), OGL1 showed dramatic color changes, while the color could be recovered by adding H(+). Moreover, OGL1 showed specific selectivity for F(-), other common anions and cations could not lead to any similar response. What deserves to be mentioned is that the report on specific sensing of anions under gel-gel states is very scarce. The gel-gel state recognition can endow the organogel OGL1 with the merits of facile and efficient properties for rapid detection of F(-). Therefore, OGL1 could act as a F(-) responsive smart material.
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Affiliation(s)
- Qi Lin
- Key Laboratory of Eco-Environment-Related Polymer Materials, Ministry of Education of China, Key Laboratory of Polymer Materials of Gansu Province, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, Gansu 730070, P. R. China.
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31
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Rajasekar M, Mohan Das T. Synthesis, characterization and gelation studies of a novel class of rhodamine based N-glycosylamines. RSC Adv 2014. [DOI: 10.1039/c4ra03198a] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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32
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Howe ENW, Bhadbhade M, Thordarson P. Cooperativity and Complexity in the Binding of Anions and Cations to a Tetratopic Ion-Pair Host. J Am Chem Soc 2014; 136:7505-16. [DOI: 10.1021/ja503383e] [Citation(s) in RCA: 91] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Ethan N. W. Howe
- School
of Chemistry, The University of New South Wales, Sydney, NSW 2052, Australia
| | - Mohan Bhadbhade
- Mark
Wainwright Analytical Centre, The University of New South Wales, Sydney, NSW 2052, Australia
| | - Pall Thordarson
- School
of Chemistry, The University of New South Wales, Sydney, NSW 2052, Australia
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33
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Wei SC, Pan M, Li K, Wang S, Zhang J, Su CY. A multistimuli-responsive photochromic metal-organic gel. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2014; 26:2072-2077. [PMID: 24339174 DOI: 10.1002/adma.201304404] [Citation(s) in RCA: 97] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/02/2013] [Revised: 11/04/2013] [Indexed: 06/03/2023]
Abstract
A photochromic metal-organic gel with thermo-, photo-, and anion-responsive behavior is obtained. Unusually, heating of the Al-ligand solution leads to gel formation and cooling to room temperature reverses the process to reform the solution. The gel is sensitive to weakly coordinating anions. Additionally, reversible photochromic transformations take place both in the solution and gel states, accompanied by reversibly switched luminescence.
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Affiliation(s)
- Shi-Chao Wei
- MOE Laboratory of Bioinorganic and Synthetic Chemistry, State Key Laboratory of Optoelectronic Materials and Technologies, Lehn Institute of Functional Materials, School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou, 510275, China
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34
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James SJ, Perrin A, Jones CD, Yufit DS, Steed JW. Highly interlocked anion-bridged supramolecular networks from interrupted imidazole–urea gels. Chem Commun (Camb) 2014; 50:12851-4. [DOI: 10.1039/c4cc05789a] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Hydrogels from a combination of imidazole and urea hydrogen bonding interactions are turned off by metal complexation and anion binding.
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Affiliation(s)
| | - Andrea Perrin
- Department of Chemistry
- Durham University
- Durham DH1 3LE, UK
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35
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Huang CB, Chen LJ, Huang J, Xu L. A novel pyrene-containing fluorescent organogel derived from a quinoline-based fluorescent porbe: synthesis, sensing properties, and its aggregation behavior. RSC Adv 2014. [DOI: 10.1039/c4ra02373k] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
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36
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Datta S, Samanta SK, Bhattacharya S. Induction of Supramolecular Chirality in the Self-Assemblies of Lipophilic Pyrimidine Derivatives by Choice of the Amino Acid-Based Chiral Spacer. Chemistry 2013; 19:11364-73. [DOI: 10.1002/chem.201300605] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2013] [Indexed: 11/11/2022]
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37
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Yepuri NR, Jamieson SA, Darwish TA, Rawal A, Hook JM, Thordarson P, Holden PJ, James M. Synthesis of per-deuterated alkyl amines for the preparation of deuterated organic pyromellitamide gelators. Tetrahedron Lett 2013. [DOI: 10.1016/j.tetlet.2013.03.031] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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38
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Miao W, Zhang L, Wang X, Cao H, Jin Q, Liu M. A Dual-Functional Metallogel of Amphiphilic Copper(II) Quinolinol: Redox Responsiveness and Enantioselectivity. Chemistry 2013; 19:3029-36. [DOI: 10.1002/chem.201203401] [Citation(s) in RCA: 63] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2012] [Revised: 11/26/2012] [Indexed: 11/12/2022]
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39
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Lowe AJ, Long BM, Pfeffer FM. Examples of Regioselective Anion Recognition among a Family of Two-, Three-, and Four-“Armed” Bis-, Tris-, and Tetrakis(thioureido) [n]Polynorbornane hosts. J Org Chem 2012; 77:8507-17. [DOI: 10.1021/jo301450b] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Adam J. Lowe
- Research Centre for Chemistry
and Biotechnology, School of Life
and Environmental Sciences, Deakin University, Waurn Ponds 3217,
Australia
| | - Benjamin M. Long
- Research Centre for Chemistry
and Biotechnology, School of Life
and Environmental Sciences, Deakin University, Waurn Ponds 3217,
Australia
| | - Frederick M. Pfeffer
- Research Centre for Chemistry
and Biotechnology, School of Life
and Environmental Sciences, Deakin University, Waurn Ponds 3217,
Australia
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40
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Roy S, Javid N, Frederix PWJM, Lamprou DA, Urquhart AJ, Hunt NT, Halling PJ, Ulijn RV. Dramatic Specific-Ion Effect in Supramolecular Hydrogels. Chemistry 2012; 18:11723-31. [DOI: 10.1002/chem.201201217] [Citation(s) in RCA: 93] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2012] [Indexed: 11/06/2022]
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41
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Lowe AJ, Pfeffer FM, Thordarson P. Determining binding constants from 1H NMR titration data using global and local methods: a case study using [n]polynorbornane-based anion hosts. Supramol Chem 2012. [DOI: 10.1080/10610278.2012.688972] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Adam J. Lowe
- a School of Life and Environmental Sciences, Centre for Biotechnology, Chemistry and Systems Biology, Deakin University , Waurn Ponds , 3217 , Australia
| | - Frederick M. Pfeffer
- a School of Life and Environmental Sciences, Centre for Biotechnology, Chemistry and Systems Biology, Deakin University , Waurn Ponds , 3217 , Australia
| | - Pall Thordarson
- b School of Chemistry, University of New South Wales , Sydney , NSW , 2052 , Australia
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42
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43
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Zhang Y, Jiang S. Fluoride-responsive gelator and colorimetric sensor based on simple and easy-to-prepare cyano-substituted amide. Org Biomol Chem 2012; 10:6973-9. [DOI: 10.1039/c2ob26016f] [Citation(s) in RCA: 66] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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44
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45
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Hao J, Hiratani K, Kameta N, Oba T. Synthesis of tripodands with multiple hydroxyl and amide groups exhibiting fluorescent anion sensing. Supramol Chem 2011. [DOI: 10.1080/10610278.2010.531139] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Jie Hao
- a Department of Applied Chemistry , Utsunomiya University , 7-1-2 Youtou, Utsunomiya, 321-8585, Japan
| | - Kazuhisa Hiratani
- a Department of Applied Chemistry , Utsunomiya University , 7-1-2 Youtou, Utsunomiya, 321-8585, Japan
| | - Naohiro Kameta
- b National Institute of Advanced Industrial Science and Technology , Tsukuba Central 5, 1-1-1 Higashi, Tsukuba, 305-8565, Japan
| | - Toru Oba
- a Department of Applied Chemistry , Utsunomiya University , 7-1-2 Youtou, Utsunomiya, 321-8585, Japan
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46
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Shen JS, Xu B. In situ encapsulating silver nanocrystals into hydrogels. A “green” signaling platform for thiol-containing amino acids or small peptides. Chem Commun (Camb) 2011; 47:2577-9. [DOI: 10.1039/c0cc04208k] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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47
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Dehn S, Tong KWK, Clady RGC, Owen DM, Gaus K, Schmidt TW, Braet F, Thordarson P. The structure and luminescence properties of europium(iii) triflate doped self-assembled pyromellitamide gels. NEW J CHEM 2011. [DOI: 10.1039/c1nj20085b] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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48
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Structure–property relationship of a class of efficient organogelators and their multistimuli responsiveness. Tetrahedron 2011. [DOI: 10.1016/j.tet.2010.11.027] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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49
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Xu D, Liu X, Lu R, Xue P, Zhang X, Zhou H, Jia J. New dendritic gelator bearing carbazole in each branching unit: selected response to fluoride ion in gel phase. Org Biomol Chem 2011; 9:1523-8. [DOI: 10.1039/c0ob00786b] [Citation(s) in RCA: 69] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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50
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Kim JA, Jeong YH, Jang WD. Versatile Supramolecular Gelling Agents: Unusual Stabilization of Physical Gels by Lithium Ions. Chemistry 2010; 16:13955-9. [DOI: 10.1002/chem.201002185] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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