Synlett 2016; 27(14): 2145-2149
DOI: 10.1055/s-0035-1561479
cluster
© Georg Thieme Verlag Stuttgart · New York

Controlled Self-Assembly inside C-Shaped Polyaromatic Strips

Mona Sharafi
Department of Chemistry, University of Vermont, Burlington, VT 05405, USA   Email: severin.schneebeli@uvm.edu   Email: jianing.li@uvm.edu
,
Zackariah J. Weinert
Department of Chemistry, University of Vermont, Burlington, VT 05405, USA   Email: severin.schneebeli@uvm.edu   Email: jianing.li@uvm.edu
,
Ian M. Cohen
Department of Chemistry, University of Vermont, Burlington, VT 05405, USA   Email: severin.schneebeli@uvm.edu   Email: jianing.li@uvm.edu
,
Chenyi Liao
Department of Chemistry, University of Vermont, Burlington, VT 05405, USA   Email: severin.schneebeli@uvm.edu   Email: jianing.li@uvm.edu
,
Monika Ivancic
Department of Chemistry, University of Vermont, Burlington, VT 05405, USA   Email: severin.schneebeli@uvm.edu   Email: jianing.li@uvm.edu
,
Jianing Li*
Department of Chemistry, University of Vermont, Burlington, VT 05405, USA   Email: severin.schneebeli@uvm.edu   Email: jianing.li@uvm.edu
,
Severin T. Schneebeli*
Department of Chemistry, University of Vermont, Burlington, VT 05405, USA   Email: severin.schneebeli@uvm.edu   Email: jianing.li@uvm.edu
› Author Affiliations
Further Information

Publication History

Received: 18 April 2016

Accepted: 21 May 2016

Publication Date:
28 June 2016 (online)


Abstract

Chirality-assisted synthesis (CAS) embodies a powerful strategy for the creation of chiral molecules with well-defined shapes and large cavities. In this communication, we show that C-shaped molecular receptors created with this approach bind to stacks of amphipathic perylenediimide (PDI) dyes. Evidence from 1H NMR titrations, DOSY-NMR studies, and all-atom molecular dynamics simulations indicates that – in the preferred supramolecular binding mode – such polyaromatic strips specifically recognize stacked PDI dimers in solution. These results represent a key step toward the controlled self-assembly of dye molecules inside chiral cavities of shape-persistent, polyaromatic strips.

Supporting Information

 
  • References and Notes

    • 1a Yao Z, Zhang M, Wu H, Yang L, Li R, Wang P. J. Am. Chem. Soc. 2015; 137: 3799
    • 1b Würthner F, Saha-Möller CR, Fimmel B, Ogi S, Leowanawat P, Schmidt D. Chem. Rev. 2016; 116: 962
    • 2a Chiu T.-L, Xu W.-F, Lin C.-F, Lee J.-H, Chao C.-C, Leung M.-K. Appl. Phys. Lett. 2009; 94: 013307
    • 2b Li G, Zhao Y, Li J, Cao J, Zhu J, Sun XW, Zhang Q. J. Org. Chem. 2015; 80: 196
    • 2c Qu J, Zhang J, Grimsdale AC, Müllen K, Jaiser F, Yang X, Neher D. Macromolecules 2004; 37: 8297
    • 2d Schols S, Verlaak S, Rolin C, Cheyns D, Genoe J, Heremans P. Adv. Funct. Mater. 2008; 18: 136
    • 3a Chellappan KV, Kandappa SK, Rajaram S, Narayan KS. J. Phys. Chem. Lett. 2015; 6: 224
    • 3b Segura JL, Juárez R, Ramos M, Seoane C. Chem. Soc. Rev. 2015; 44: 6850
    • 4a Wang W, Shaller AD, Li AD. J. Am. Chem. Soc. 2008; 130: 8271
    • 4b Langhals H, Hofer A, Bernhard S, Siegel JS, Mayer P. J. Org. Chem. 2011; 76: 990
    • 4c Kistler KA, Pochas CM, Yamagata H, Matsika S, Spano FC. J. Phys. Chem. B 2012; 116: 77
    • 4d Kumar J, Nakashima T, Kawai T. J. Phys. Chem. Lett. 2015; 6: 3445
    • 4e Kumar J, Tsumatori H, Yuasa J, Kawai T, Nakashima T. Angew. Chem. Int. Ed. 2015; 54: 5943
    • 4f Roche C, Sun HJ, Leowanawat P, Araoka F, Partridge BE, Peterca M, Wilson DA, Prendergast ME, Heiney PA, Graf R, Spiess HW, Zeng X, Ungar G, Percec V. Nat. Chem. 2016; 8: 80
  • 5 Liu X, Weinert ZJ, Sharafi M, Liao C, Li J, Schneebeli ST. Angew. Chem. Int. Ed. 2015; 54: 12772
  • 6 Computer models were constructed in vacuum with the software packages MacroModel (see: MacroModel, version 10.4, Schrödinger, LLC, New York, NY, 2014) and Maestro (see: Maestro, version 9.8, Schrödinger, LLC, New York, NY, 2014), using default parameters implemented in the OPLS2005 force field.
    • 7a Würthner F, Thalacker C, Diele S, Tschierske C. Chem. Eur. J. 2001; 7: 2245
    • 7b Kaiser TE, Wang H, Stepanenko V, Würthner F. Angew. Chem. Int. Ed. 2007; 46: 5541
    • 7c Shao C, Grune M, Stolte M, Würthner F. Chem. Eur. J. 2012; 18: 13665
    • 8a Williams ME, Murray RW. Chem. Mater. 1998; 10: 3603
    • 8b Samudrala R, Zhang X, Wadkins RM, Mattern DL. Bioorg. Med. Chem. 2007; 15: 186
    • 8c Wang L, Sun C, Li S, Jia N, Li J, Qu F, Goh K, Chen Y. Polymer 2016; 82: 172
  • 9 Perylene-3,4,9,10-tetracarboxylic dianhydride (5, 0.05 g, 0.127 mmol), methoxypolyethylene glycol amine (6, M n = 1000 Da, 0.254 g, 0.254 mmol), and zinc acetate (0.0236 g, 0.127 mmol) were mixed with imidazole (2.0 g, 29.4 mmol) under a nitrogen atmosphere. The reaction mixture was heated for 24 h at 100–110 °C. After cooling to room temperature, 1 N HCl (15 mL) was added to protonate all of the imidazole, followed by stirring at room temperature for 1 h. The resulting solution was extracted with CH2Cl2 four times, and the organic layer was dried over anhydrous MgSO4, followed by evaporation of the solvent under reduced pressure. The crude product was purified by flash chromatography over silica gel (eluent: 1:9 v/v MeOH–CH2Cl2) to afford the dye 7 (75%) as a red solid. Characterization Data for 7 1H NMR (500 MHz, CDCl3): δ = 8.71 (d, J = 8.0 Hz, 4 H), 8.67 (d, J = 8.0 Hz, 4 H), 4.47 (t, J = 6.1 Hz, 4 H), 3.86 (t, J = 6.1 Hz, 4 H), 3.52–3.76 (m, 152 H), 3.38 (s, 6 H). 13C NMR (125 MHz, CDCl3): δ = 163.46, 134.70, 131.53, 129.46, 126.48, 123.33, 123.25, 72.07, 70.76, 70.75, 70.70 (br, multiple glycol peaks overlapping), 70.65, 68.02, 59.17, 39.43. ESI-HRMS: m/z calcd for [C106H182N4O44]2+: 1107.6064 [M + 2NH4]2+; found: 1107.6013.
    • 10a Gershberg J, Fennel F, Rehm TH, Lochbrunner S, Würthner F. Chem. Sci. 2016; 7: 1729
    • 10b Zeng L, Liu T, He C, Shi D, Zhang F, Duan C. J. Am. Chem. Soc. 2016; 138: 3958
    • 11a From the DOSY-1H NMR spectrum (Figure 4) of 7, the average diffusion constant for the protons attached to 7 was found to lie close to 1.5·10–10 m2 s–1. By applying the Stokes-Einstein equation11b this diffusion constant translates into a hydrodynamic radius of ca. 2.9 nm, assuming11c a viscosity of 0.5·10–2 Poise for the CD3CN–D2O (4:1 v/v) solvent mixture employed. This measured hydrodynamic radius is consistent with the predominant association of 7 into a dimeric, supramolecular complex 7@7.
    • 11b Gershberg J, Fennel F, Rehm TH, Lochbrunner S, Würthner F. Chem. Sci. 2016; 7: 1729
    • 11c Cunningham GP, Vidulich GA, Kay RL. J. Chem. Eng. Data 1967; 12: 336
  • 12 Foroutan-Nejad C. Theor. Chem. Acc. 2015; 134: 1
  • 13 Nalluri SK, Voskuhl J, Bultema JB, Boekema EJ, Ravoo BJ. Angew. Chem. Int. Ed. 2011; 50: 9747
    • 14a In the DOSY-1H NMR spectrum recorded for the mixture of 4 and 7, the resonance e of 4 was not resolved, since the signal overlaps with the resonance of proton y on the dye 7. Note that such difficulties in resolving the diffusion constants of nearby DOSY-NMR signals often arise due to the nature of the inverse Laplace transform.
    • 14b Claridge TD In High-Resolution NMR Techniques in Organic Chemistry. Elsevier; Oxford: 2009. 2nd ed. 328