Superhydrophobic surfaces are generally made by controlling the surface chemistry and surface roughness of various expensive materials, which are then applied by means of complex time-consuming processes. We describe a simple and inexpensive method for forming a superhydrophobic coating using polypropylene (a simple polymer) and a suitable selection of solvents and temperature to control the surface roughness. The resulting gel-like porous coating has a water contact angle of 160 degrees. The method can be applied to a variety of surfaces as long as the solvent mixture does not dissolve the underlying material.

His Ph.D. research involves the synthesis of dithienothiophene (DTT) and ethenedithiothiophene (EDTT) type compounds and their electrochemical polymerizations. His other research area includes controlled release of anticancer drugs in biodegradable polymers. Scheme 2. Thionation Mechanism of 3 and 4 Scheme 3. Formation of the Side Product 8 Scheme 4. Synthesis of 1,3,2-Dithiaphosphetane 2-Sulfides

Introduction 3419 2. Reactions of P 4 S 10 3421 2.1. Ketones 3421 2.2. Thionoesters, Dithioesters, Thionolactones, Dithiolactones, Thiolactones, and Dithiolethiones 3426 2.3. Amides and Lactams 3435 2.4. Imides 3448 2.5. Thiophenes 3451 2.6. Thiazolines, Thiazoles, and Thiazines 3454 2.7. Dithiazoles 3456 2.8. Thiadiazoles 3456 2.9. Imidazolines and Pyrimidines 3456 2.10. Alcohols 3458 2.11. PdO to PdS 3461 2.12. Reduction 3462 2.13. Nucleotides, Purines, and Pyrimidines 3463 2.14. Miscellaneous 3467 2.15. P 4 S 10 vs Lawesson's Reagent (LR) 3473 3. Conclusion 3473 4. Acknowledgments 3473 5. References 3473