1
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Mobili R, Preda G, Dondi D, Monzani E, Vadivel D, Massera C, Pasini D, Amendola V. Triptycene-based diiron(II) mesocates: spin-crossover in solution. Chem Commun (Camb) 2024; 60:5522-5525. [PMID: 38695185 DOI: 10.1039/d4cc00812j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/22/2024]
Abstract
Triptycene-based diiron(II) and dizinc(II) mesocates were obtained using a novel rigid ligand with two pyridylbenzimidazole chelating units fused into the triptycene scaffold. Studies on the diiron(II) assembly in solution showed that the complex undergoes thermal-induced one-step spin-crossover with T1/2 at 243 K (Evans method).
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Affiliation(s)
- Riccardo Mobili
- Department of Chemistry, University of Pavia, viale Torquato Taramelli 12, 27100 Pavia, Italy. valeria.amendola@unipv
- Sorbonne Université, CNRS, Institut Parisien de Chimie Moléculaire, 4 Place Jussieu, Paris, France.
| | - Giovanni Preda
- Department of Chemistry, University of Pavia, viale Torquato Taramelli 12, 27100 Pavia, Italy. valeria.amendola@unipv
| | - Daniele Dondi
- Department of Chemistry, University of Pavia, viale Torquato Taramelli 12, 27100 Pavia, Italy. valeria.amendola@unipv
| | - Enrico Monzani
- Department of Chemistry, University of Pavia, viale Torquato Taramelli 12, 27100 Pavia, Italy. valeria.amendola@unipv
| | - Dhanalakshmi Vadivel
- Department of Chemistry, University of Pavia, viale Torquato Taramelli 12, 27100 Pavia, Italy. valeria.amendola@unipv
| | - Chiara Massera
- Department of Chemistry, Life Science and Environmental Sustainability University of Parma, Parco Area delle Scienze 17/A, 43124, Parma, Italy
| | - Dario Pasini
- Department of Chemistry, University of Pavia, viale Torquato Taramelli 12, 27100 Pavia, Italy. valeria.amendola@unipv
| | - Valeria Amendola
- Department of Chemistry, University of Pavia, viale Torquato Taramelli 12, 27100 Pavia, Italy. valeria.amendola@unipv
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2
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Hassan A, Mollah MMR, Jayashree R, Jain A, Das S, Das N. Ultrafast Removal of Thorium and Uranium from Radioactive Waste and Groundwater Using Highly Efficient and Radiation-Resistant Functionalized Triptycene-Based Porous Organic Polymers. ACS APPLIED MATERIALS & INTERFACES 2024. [PMID: 38687684 DOI: 10.1021/acsami.4c01397] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/02/2024]
Abstract
Thorium (Th) and uranium (U) are important strategic resources in nuclear energy-based heavy industries such as energy and defense sectors that also generate significant radioactive waste in the process. The management of nuclear waste is therefore of paramount importance. Contamination of groundwater/surface water by Th/U is increasing at an alarming rate in certain geographical locations. This necessitates the development of strategic adsorbent materials with improved performance for capturing Th/U species from radioactive waste and groundwater. This report describes the design of a unique, robust, and radiation-resistant porous organic polymer (POP: TP-POP-SO3NH4), which demonstrates ultrafast removal of Th(IV) (<30 s)/U(VI) (<60 s) species present in simulated radioactive wastewater/groundwater samples. Thermal, chemical, and radiation stabilities of these POPs were studied in detail. The synthesized ammoniated POP revealed exceptional capture efficiency for trace-level Th (<4 ppb) and U (<3 ppb) metal ions through the cation-exchange mechanism. TP-POP-SO3NH4 shows a significant sorption capacity [Th (787 mg/g) and U (854 mg/g)] with an exceptionally high distribution coefficient (Kd) of 107 mL/g for Th. This work also demonstrates a facile protocol to convert a nonperforming POP, by simple chemical modifications, into a superfast adsorbent for efficient uptake/removal of U/Th.
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Affiliation(s)
- Atikur Hassan
- Department of Chemistry, Indian Institute of Technology Patna, Patna, Bihar 801106, India
| | - Md Mofizur Rahman Mollah
- Materials Chemistry and Metal Fuel Cycle Group, Indira Gandhi Centre for Atomic Research, Kalpakkam, Tamil Nadu 603102, India
| | - Ravikumar Jayashree
- Materials Chemistry and Metal Fuel Cycle Group, Indira Gandhi Centre for Atomic Research, Kalpakkam, Tamil Nadu 603102, India
| | - Ashish Jain
- Materials Chemistry and Metal Fuel Cycle Group, Indira Gandhi Centre for Atomic Research, Kalpakkam, Tamil Nadu 603102, India
| | - Soumen Das
- Materials Chemistry and Metal Fuel Cycle Group, Indira Gandhi Centre for Atomic Research, Kalpakkam, Tamil Nadu 603102, India
| | - Neeladri Das
- Department of Chemistry, Indian Institute of Technology Patna, Patna, Bihar 801106, India
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3
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Preda G, Mobili R, Ravelli D, Amendola V, Pasini D. Homoconjugation and Tautomeric Isomerism in Triptycene-Fused Pyridylbenzimidazoles. J Org Chem 2024; 89:5690-5698. [PMID: 38567891 DOI: 10.1021/acs.joc.4c00221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/20/2024]
Abstract
The facile, metal-free synthesis and characterization of three new series of triptycene-fused pyridylbenzimidazoles are reported; such compounds possess an imidazole moiety fused within the benzene rings of the trypticene and a pyridine ring installed at position 2 of the imidazole rings. The position of the nitrogen atom of the pyridyl moiety linked to position 2 of the fused benzimidazole scaffold is systematically changed from the ortho to para position. The number of substituted blades bearing the pyridyl-substituted fused benzimidazole scaffolds has been increased from one to three. Such a library of compounds allowed us to evaluate the enhancement of two main effects: tautomeric isomerism and homoconjugation. The characteristic dynamic equilibrium between different isomers induced by prototropic tautomerization was examined by 1H nuclear magnetic resonance spectroscopy. By comparison of the photophysical properties of the new compounds with those of classical planar pyridylbenzimidazoles, the presence of the homoconjugation effect between the different triptycene blades was demonstrated. Fine details of the electronic structure of the new derivatives were unraveled by a computational analysis. The novel compounds can be employed for the construction of intriguing self-assembled supramolecular architectures.
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Affiliation(s)
- Giovanni Preda
- Department of Chemistry and INSTM Research Unit, University of Pavia, Via Taramelli 12, 27100 Pavia, Italy
| | - Riccardo Mobili
- Department of Chemistry and INSTM Research Unit, University of Pavia, Via Taramelli 12, 27100 Pavia, Italy
| | - Davide Ravelli
- Department of Chemistry and INSTM Research Unit, University of Pavia, Via Taramelli 12, 27100 Pavia, Italy
| | - Valeria Amendola
- Department of Chemistry and INSTM Research Unit, University of Pavia, Via Taramelli 12, 27100 Pavia, Italy
| | - Dario Pasini
- Department of Chemistry and INSTM Research Unit, University of Pavia, Via Taramelli 12, 27100 Pavia, Italy
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4
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Hassan A, Baghel AS, Kumar A, Das N. Palladium(II)-immobilized Triptycene based Hypercrosslinked Polymers: An Efficient, Green, and Reusable Heterogenous Catalyst for Suzuki-Miyaura Cross-coupling Reaction. Chem Asian J 2024; 19:e202300778. [PMID: 37950487 DOI: 10.1002/asia.202300778] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2023] [Revised: 11/06/2023] [Accepted: 11/10/2023] [Indexed: 11/12/2023]
Abstract
The Suzuki-Miyaura cross-coupling (SMCC) involves the coupling of organohalides and organoboron molecules in the presence of Pd(II)-based catalysts. Often SMCC reactions employ homogenous catalysts. However, such homogenous SMCC reactions are associated with certain limitations which has motivated design of effective and sustainable Pd(II)-based heterogeneous catalytic systems. Herein, we report a systematic development of a Pd(II)-immobilized and triptycene based ionic hyper crosslinked polymer (Pd@TP-iHCP) and explored its application as a heterogeneous catalyst for SMCC reaction. Pd@TP-iHCP has ample N-heterocyclic carbene (NHC) pendants that anchor Pd(II) centres on the polymeric matrix. Pd@TP-iHCP was characterized satisfactorily using FT-IR, 13 C CP-MAS NMR, BET surface area analysis, SEM, EDX and HRTEM. The performance of Pd@TP-iHCP as a heterogeneous catalyst for SMCC reactions was explored using various combinations of aryl boronic acids and aryl halides. Experimental results show that Pd@TP-iHCP is associated with a moderately high surface area. It is an efficient catalyst for SMCC (in aqueous media) with a modest loading of 0.8 mol % Pd(II)-catalyst since high yields of the expected products were obtained in shorter time intervals. Pd@TP-iHCP also features excellent stability and catalyst recyclability since it could be re-used for several cycles without any significant decrease in catalytic efficiency.
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Affiliation(s)
- Atikur Hassan
- Department of Chemistry, Indian Institute of Technology Patna, Patna, 801106, Bihar, India
| | - Akanksha Singh Baghel
- Department of Chemistry, Indian Institute of Technology Patna, Patna, 801106, Bihar, India
| | - Amit Kumar
- Department of Chemistry, Indian Institute of Technology Patna, Patna, 801106, Bihar, India
| | - Neeladri Das
- Department of Chemistry, Indian Institute of Technology Patna, Patna, 801106, Bihar, India
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5
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Rottschäfer D, Pachkovska A, Xie X, Oberdorf K, Reith S, Stoy A, Lichtenberg C. Fusing Triphenylbismuth and PnPh 3 (Pn = P-Bi): Synthesis, Isolation, and Characterization of 9-Bisma-10-Pnictatriptycenes. Inorg Chem 2023; 62:18228-18238. [PMID: 37867302 DOI: 10.1021/acs.inorgchem.3c02802] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2023]
Abstract
The first series of 9-bisma-10-pnictatriptycenes Bi(C6H4)3Pn (2-Pn, Pn = P-Bi; see graphic) has been synthesized in a two-step procedure via suitable tris(2-bromophenyl)pnictanes 1-Pn and characterized in solution as well as in the solid state. DFT calculations suggest preferential interactions between 2-Pn and soft Lewis acids via the lighter pnictogen donor atom. Experimental studies demonstrate that even the weakest Lewis base in the series of 2-Pn, namely the dibismatriptycene 2-Bi, interacts with Lewis acidic [BiMe2(SbF6)] in solution. Analytical techniques include (VT-)NMR spectroscopy, DOSY NMR spectroscopy, high-resolution mass spectrometry, single-crystal X-ray diffraction analyses, and DFT calculations.
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Affiliation(s)
- Dennis Rottschäfer
- Fachbereich Chemie, Philipps-Universität Marburg, Hans-Meerwein-Str. 4, D-35043 Marburg, Germany
| | - Anna Pachkovska
- Fachbereich Chemie, Philipps-Universität Marburg, Hans-Meerwein-Str. 4, D-35043 Marburg, Germany
| | - Xiulan Xie
- Fachbereich Chemie, Philipps-Universität Marburg, Hans-Meerwein-Str. 4, D-35043 Marburg, Germany
| | - Kai Oberdorf
- Fachbereich Chemie, Philipps-Universität Marburg, Hans-Meerwein-Str. 4, D-35043 Marburg, Germany
| | - Sascha Reith
- Fachbereich Chemie, Philipps-Universität Marburg, Hans-Meerwein-Str. 4, D-35043 Marburg, Germany
| | - Andreas Stoy
- Fachbereich Chemie, Philipps-Universität Marburg, Hans-Meerwein-Str. 4, D-35043 Marburg, Germany
| | - Crispin Lichtenberg
- Fachbereich Chemie, Philipps-Universität Marburg, Hans-Meerwein-Str. 4, D-35043 Marburg, Germany
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6
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Preda G, Aricò A, Botta C, Ravelli D, Merli D, Mattiello S, Beverina L, Pasini D. Activation of Solid-State Emission and Photostability through Molecular Confinement: The Case of Triptycene-Fused Quinacridone Dyes. Org Lett 2023; 25:6490-6494. [PMID: 37638412 PMCID: PMC10496147 DOI: 10.1021/acs.orglett.3c02093] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2023] [Indexed: 08/29/2023]
Abstract
We report the facile, metal-free convergent synthesis and the characterization of novel quinacridone dyes in which two triptycene units end-cap and sterically confine the quinacridone chromophore. A precise comparison of the confined dyes with their known homologues reveals that the reduction of π-π interactions in triptycene-fused quinacridone dyes compared to classical quinacridone results not only in an increase of solubility and processability but also in an enhancement of fluorescence quantum yield and photostability in the solid state.
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Affiliation(s)
- Giovanni Preda
- Department
of Chemistry and INSTM, University of Pavia
Via Taramelli 12, 27100 Pavia PV, Italy
| | - Andrea Aricò
- Department
of Chemistry and INSTM, University of Pavia
Via Taramelli 12, 27100 Pavia PV, Italy
| | - Chiara Botta
- SCITEC−CNR,
Consiglio Nazionale delle Ricerche, Istituto
di Scienze e Tecnologie Chimiche ‘G. Natta’, Via A. Corti 12, 20133 Milano, Italy
| | - Davide Ravelli
- Department
of Chemistry and INSTM, University of Pavia
Via Taramelli 12, 27100 Pavia PV, Italy
| | - Daniele Merli
- Department
of Chemistry and INSTM, University of Pavia
Via Taramelli 12, 27100 Pavia PV, Italy
| | - Sara Mattiello
- Dipartimento
di Scienza dei Materiali, Università
degli Studi Milano-Bicocca and INSTM, Via R. Cozzi 55, 20125, Milano, Italy
| | - Luca Beverina
- Dipartimento
di Scienza dei Materiali, Università
degli Studi Milano-Bicocca and INSTM, Via R. Cozzi 55, 20125, Milano, Italy
| | - Dario Pasini
- Department
of Chemistry and INSTM, University of Pavia
Via Taramelli 12, 27100 Pavia PV, Italy
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7
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Liu N, Ma H, Sun R, Zhang QP, Tan B, Zhang C. Porous Triptycene Network Based on Tröger's Base for CO 2 Capture and Iodine Enrichment. ACS APPLIED MATERIALS & INTERFACES 2023. [PMID: 37313999 DOI: 10.1021/acsami.3c06700] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
A three-dimensional rigid "six-connected" porous triptycene network based on Tröger's base (TB-PTN) was synthesized by using triptycenes as connectors and Tröger's base as linkers. With characteristics of a high surface area of 1528 m2 g-1, nitrogen-enriched groups, and superior thermal stability, TB-PTN displays a high CO2 uptake of 22.3 wt % (273 K, 1 bar) and excellent iodine vapor adsorption (240 wt %).
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Affiliation(s)
- Ningning Liu
- College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Hui Ma
- College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Ruixue Sun
- School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Qing-Pu Zhang
- College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Bien Tan
- School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Chun Zhang
- College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China
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8
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Ngo QP, Yuan W, Wu YCM, Swager TM. Emulsion Assembly of Graphene Oxide/Polymer Composite Membranes. ACS APPLIED MATERIALS & INTERFACES 2023; 15:21384-21393. [PMID: 37071537 DOI: 10.1021/acsami.3c02636] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
Graphene oxide/polymer composite water filtration membranes were developed via coalescence of graphene oxide (GO) stabilized Pickering emulsions around a porosity-generating polymer. Triptycene poly(ether ether sulfone)-CH2NH2:HCl polymer interacts with the GO at the water-oil interface, resulting in stable Pickering emulsions. When they are deposited and dried on polytetrafluoroethylene substrate, the emulsions fuse to form a continuous GO/polymer composite membrane. X-ray diffraction and scanning electron microscopy demonstrate that the intersheet spacing and thickness of the membranes increased with increasing polymer concentration, confirming the polymer as the spacer between the GO sheets. The water filtration capability of the composite membranes was tested by removing Rose Bengal from water, mimicking separations of weak black liquor waste. The composite membrane achieved 65% rejection and 2500 g m-2 h-1 bar-1. With high polymer and GO loading, composite membranes give superior rejection and permeance performance when compared with a GO membrane. This methodology for fabrication membranes via GO/polymer Pickering emulsions produces membranes with a homogeneous morphology and robust chemical separation strength.
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Affiliation(s)
- Quynh P Ngo
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
- Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Weize Yuan
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - You-Chi Mason Wu
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Timothy M Swager
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
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9
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Hassan A, Saritha C, Rajana VK, Mandal D, Das N. Rationally Designed Ionic Covalent Organic Networks (iCONs) with Efficient Antimicrobial Activities. ACS Macro Lett 2023; 12:376-381. [PMID: 36848661 DOI: 10.1021/acsmacrolett.2c00686] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/01/2023]
Abstract
Two unique ionic covalent organic networks (iCONs) incorporated with guanidinium motifs were obtained and characterized by various techniques. Upon 8 h of treatment with iCON-HCCP (250 μg/mL), >97% killing of Staphylococcus aureus, Candida albicans, and Candida glabrata strains was observed. Antimicrobial efficacies against bacteria and fungi were also evident from FE-SEM studies. High antifungal efficacies also correlated well with >60% reduction of ergosterol content, high lipid peroxidation, and membrane damage leading to necrosis.
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Affiliation(s)
- Atikur Hassan
- Department of Chemistry, Indian Institute of Technology Patna, Patna, 801106 Bihar, India
| | - Cevella Saritha
- Department of Biotechnology, National Institute of Pharmaceutical Education and Research Hajipur, 844102 Bihar, India
| | - Vinod K Rajana
- Department of Biotechnology, National Institute of Pharmaceutical Education and Research Hajipur, 844102 Bihar, India
| | - Debabrata Mandal
- Department of Biotechnology, National Institute of Pharmaceutical Education and Research Hajipur, 844102 Bihar, India
| | - Neeladri Das
- Department of Chemistry, Indian Institute of Technology Patna, Patna, 801106 Bihar, India
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10
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Ma H, Yang BB, Wang Z, Wu K, Zhang C. A three dimensional graphdiyne-like porous triptycene network for gas adsorption and separation. RSC Adv 2022; 12:28299-28305. [PMID: 36320518 PMCID: PMC9531253 DOI: 10.1039/d2ra04031j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Accepted: 09/27/2022] [Indexed: 11/05/2022] Open
Abstract
Graphdiyne, an emerging carbon allotrope, has attracted many researchers devoted to the study of its synthesis and application. The utilization of graphdiyne in gas adsorption and separation has been predicted by computer simulation with many examples. In this work, the triangular basic unit of graphdiyne was introduced into a triptycene-based porous organic polymer to obtain a three dimensional graphdiyne-like porous triptycene network named G-PTN. With high surface area and a microporous structure, G-PTN exhibited convincing application potential for the storage of gas molecules, especially for the selective adsorption of acetylene over ethylene. Computational simulation proved the importance of the triptycene units and three dimensional structure to the selectivity, as well as the potential of graphdiyne units as selective binding sites, suggesting that through judicious design, new three-dimensional porous graphdiyne could be acquired with better gas adsorption and separation performance.
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Affiliation(s)
- Hui Ma
- College of Life Science and Technology, National Engineering Research Center for Nanomedicine, Huazhong University of Science and TechnologyWuhan430074China
| | - Bin-Bin Yang
- College of Life Science and Technology, National Engineering Research Center for Nanomedicine, Huazhong University of Science and TechnologyWuhan430074China
| | - Zhen Wang
- College of Life Science and Technology, National Engineering Research Center for Nanomedicine, Huazhong University of Science and TechnologyWuhan430074China
| | - Kai Wu
- Technology R&D Center, Hubei Tobacco (Group) Co., LtdWuhan430070China
| | - Chun Zhang
- College of Life Science and Technology, National Engineering Research Center for Nanomedicine, Huazhong University of Science and TechnologyWuhan430074China
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11
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Zhai C, Isaacs L. New Synthetic Route to Water‐Soluble Prism[5]arene Hosts and Their Molecular Recognition Properties**. Chemistry 2022; 28:e202201743. [DOI: 10.1002/chem.202201743] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2022] [Indexed: 11/10/2022]
Affiliation(s)
- Canjia Zhai
- Department of Chemistry and Biochemistry University of Maryland College Park 20742 Maryland USA
| | - Lyle Isaacs
- Department of Chemistry and Biochemistry University of Maryland College Park 20742 Maryland USA
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12
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Xiong G, Gao S, Zhang Q, Ren B, You L, Ding F, He Y, Sun Y. High porosity cyclotriphosphazene-based hyper-crosslinked polymers as efficient cationic dye MB adsorbents. POLYMER 2022. [DOI: 10.1016/j.polymer.2022.124787] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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13
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Du XS, Han Y, Chen CF. Triple-stranded triptycene-based metallo-supramolecular helicate displaying efficient encapsulation of bulky guest molecules. Chem Commun (Camb) 2022; 58:1326-1329. [PMID: 34985088 DOI: 10.1039/d1cc05974b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Triple-stranded metallo-supramolecular helicates were readily constructed by achieving a coordination of the gallium(iii) cation by ligands based on 2,7- and 2,6-disubstituted triptycenes. The significance of these building blocks in the construction of helicates with the capability for guest encapsulation was also revealed.
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Affiliation(s)
- Xu-Sheng Du
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China. .,University of Chinese Academy of Sciences, Beijing 100049, China
| | - Ying Han
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China.
| | - Chuan-Feng Chen
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China. .,University of Chinese Academy of Sciences, Beijing 100049, China
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