Publications

Haya H Al Muhannadi
/ Categories: Publications

Surface-initiated polymerization of superhydrophobic polymethylene

Author(s): Tuberquia, JC (Tuberquia, Juan C.); Nizamidin, N (Nizamidin, Nabijan); Harl, RR (Harl, Robert R.); Albert, J (Albert, Jake); Hunter, J (Hunter, Jason); Rogers, BR (Rogers, Bridget R.); Jennings, GK (Jennings, G. Kane)

We report a new surface-initiated polymerization strategy that yields superhydrophobic polymethylene (PM) films from initially smooth substrates of gold and silicon. The films are prepared by assembling a vinyl-terminated self-assembled monolayer, followed by exposure of the surface to a 0.1 M solution of borane, and polymerizing from the borane sites upon exposure to a solution of diazomethane at -17 degrees C. Surface-initiated polymethylenation (SIPM) presents rapid growth in relation to other surface-initiated reactions, producing PM films thicker than 500 nm after 2 min of reaction and 3 mu m after 24 h of reaction. AFM and SEM images show the presence of micro- and nanoscale features that enable the entrapment of air when exposed to water. Consistent with this result, these films exhibit advancing water contact angles greater than 160 degrees, dramatically different than 103 degrees measured for smooth PM films, and hysteresis values ranging from 2 degrees to 40 degrees depending on the substrate and polymerization time. The superhydrophobic character of the films results in the entrapment of air at the polymer/solution interface to provide remarkable resistances greater than 10(10) Omega.cm(2) against the transport of aqueous redox probes and cause the film to behave as a "perfect" capacitor.

Author(s):  Tuberquia, JC (Tuberquia, Juan C.); Nizamidin, N (Nizamidin, Nabijan); Harl, RR (Harl, Robert R.); Albert, J (Albert, Jake); Hunter, J (Hunter, Jason); Rogers, BR (Rogers, Bridget R.); Jennings, GK (Jennings, G. Kane)
Source:  JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 132 (16): 5725-5734 APR 28 2010
Language:  English
Document Type:  Article
KeyWords Plus:  SELF-ASSEMBLED MONOLAYERS; TRANSFER RADICAL POLYMERIZATION; SUPER-HYDROPHOBIC SURFACES; GOLD SURFACES; POLY(HYDROXYETHYL METHACRYLATE); SILICON SURFACES; COPOLYMER FILMS; BORON COMPOUNDS; ROUGH SURFACES; SIDE-CHAINS
Addresses:  [Tuberquia, Juan C.; Nizamidin, Nabijan; Harl, Robert R.; Albert, Jake; Hunter, Jason; Rogers, Bridget R.; Jennings, G. Kane] Vanderbilt Univ, Dept Chem & Biomol Engn, Nashville, TN 37235 USA
Reprint Address:  Jennings, GK, Vanderbilt Univ, Dept Chem & Biomol Engn, 221 Kirkland Hall, Nashville, TN 37235 USA.
Funding Agency:  National Science Foundation - Vanderbilt University School of Engineering Summer Undergraduate Research Experience Program
Publisher:  AMER CHEMICAL SOC
Publisher Address:  1155 16TH ST, NW, WASHINGTON, DC 20036 USA
ISSN:  0002-7863
29-char Source Abbrev.:  J AM CHEM SOC
ISO Source Abbrev.:  J. Am. Chem. Soc.
Subject Category:  Chemistry, Multidisciplinary
ISI Document Delivery No.:  587KS
Previous Article Superpositions of Laguerre-Gaussian Beams in Strongly Nonlocal Left-handed Materials
Next Article On the systematic design and selection of optimal working fluids for Organic Rankine Cycles
Print
2571 Rate this article:
No rating

Theme picker

DeSIGN: Guided Practice for Sign Language

DeSIGN: Guided Practice for Sign Language

Children learn and practice their vocabulary through interaction with parents and friends as well as through formal instruction at school. However, for deaf children, sign language is the main...
Calcium channels determine how life begins, and ends
Calcium channels determine how life begins, and ends

Calcium channels determine how life begins, and ends

Ongoing work at Weill Cornell Medical College in Qatar (WCMC-Q) is investigating how intracellular calcium (Ca2+) signaling pathways are involved in the very beginning of life as they prepare the...
Taking gas-to-liquid technology to the next level
Taking gas-to-liquid technology to the next level

Taking gas-to-liquid technology to the next level

In the 1920s, two German scientists—Franz Fischer and Hans Tropsch—developed revolutionary chemical reactions that could transform gas into liquid. These reactions proved particularly...
Researchers build the case for wind and wave studies in Qatar
Researchers build the case for wind and wave studies in Qatar

Researchers build the case for wind and wave studies in Qatar

For the first time, fine detail about the wind and wave conditions around the coast of Qatar has been recorded. By arranging the most sophisticated equipment available on the edge of a 500-meter...
RSS

Theme picker