Nanosponges for water purification

Author(s): Li D, Ma M

Abstract

 We synthesized a new class of organic nanoporous polymers using cyclodextrins as basic building blocks. These processible nanoporous polymers were named 'nanosponges' because they have nanometer-size pores (distribution 0.7–1.2 nm) and exhibit superior ability to absorb organic molecules in water. Cyclodextrin cavities provide a hydrophobic environment and hence generate a strong affinity to organic molecules at water-solid interfaces. Indeed, the formation constant (K) of polymeric cyclodextrins and organic guest molecules is more than eight orders of magnitude larger than molecular cyclodextrin systems in water, and yet the process is completely reversible in organic solvents such as ethanol. The significant potential of these results is that hazardous organic contaminants may be reduced to parts-per-trillion levels in water by these polymers, as measured by ion-trap mass spectroscopy and UV-visible spectroscopy.

Similar Articles

Connection between the vibrational dynamics and the cross-linking properties in cyclodextrins-based polymers

Author(s): Crupi V, Fontana A, Giarola M, Majolino D, Mariotto G, et al.

Cyclodextrin-based nanosponges as drug carriers

Author(s): Trotta F, Zanetti M, Cavalli R

Nanosponge formulations as oxygen delivery systems

Author(s): Cavalli R, Akhter AK, Bisazza A, Giustetto P, Trotta F, et al.

Cyclodextrin-based nanosponges: a propitious platform for enhancing drug delivery

Author(s): Chilajwar SV, Pednekar PP, Jadhav KR, Gupta GJ, Kadam VJ

Cyclodextrin-based nanogels for pharmaceutical and biomedical applications

Author(s): Moya-Ortega MD, Alvarez-Lorenzo C, Concheiro A, Loftsson T

Tamoxifen citrate loaded amphiphilic beta-cyclodextrin nanoparticles: in vitro characterization and cytotoxicity

Author(s): Memisoglu-Bilensoy E, Vural I, Bochot A, Renoir J M, Duchene D, Hincal A A

The application of nanosponges to cancer drug delivery

Author(s): Trotta F, Dianzani C, Caldera F, Mognetti B, Cavalli R

Phase-controlled supramolecularphoto chirogenesis in cyclodextrinnanosponges

Author(s): Liang W, Yang C, Zhou D, Haneoka H, Nishijima M, et al.

Regenerative medicine and stem cell based drug discovery

Author(s): Sakurada K, McDonald FM, Shimada F

Hydrogels in regenerative medicine

Author(s): Slaughter BV, Khurshid SS, Fisher OZ, Khademhosseini A, Peppas NA

Hydrogel-based drug delivery systems: comparison of drug diffusivity and release kinetics

Author(s): Brandl F, Kastner F, Gschwind RM, Blunk T, Tessmar J, et al.

Controlled drug delivery in tissue engineering

Author(s): Biondi M, Ungaro F, Quaglia F, Netti PA

Photoencapsulation of chondrocytes in poly(ethylene oxide)-based semi-interpenetrating networks

Author(s): Elisseeff J, McIntosh W, Anseth K, Riley S, Ragan P, et al.

Hydrogen-bond dynamics of water confined in cyclodextrinnanosponges hydrogel

Author(s): Crupi V, Fontana A, Majolino D, Mele A, Melone L, et al.

Collective nature of the boson peak and universal transboson dynamics of glasses

Author(s): Chumakov AI, Sergueev I, van Bürck U, Schirmacher W, Asthalter T, et al.

Designing materials for biology and medicine

Author(s): Langer R, Tirrell DA

Photodegradable hydrogels for dynamic tuning of physical and chemical properties

Author(s): Kloxin AM, Kasko AM, Salinas CN, Anseth KS

Anomalous diffusion of Ibuprofen in cyclodextrinnanosponge hydrogels: an HRMAS NMR study

Author(s): Ferro M, Castiglione F, Punta C, Melone L, Panzeri W2, et al.