PAINTABLE PHOTOWETTING COATINGS

摘要

Technologies are generally described for photo-wettable paint coatings. In some examples, a coating may include a charge photo-ejector, a charge transporter; and/or a charge storage material. The charge photo-ejector may absorb light and eject a charge. The charge may be received by the charge transporter and transported to the charge storage material, which may store charge at an air-paint interface. Alternating exposure to light and dark conditions, such as daytime and nighttime, may cycle surface energy states of the photo-wettable paint coating. The photo-wettable paint coating may cycle between a charged, wettable, relatively lower surface energy state when lighted and a relatively hydrophobic, higher surface energy state when in a charge-dissipated and/or unlighted state. Cycling between different states may promote self-cleaning of the photo-wettable paint coatings of contaminants, further in combination with water provided by rain, dew, washing, spraying, or the like.

主权项

1. A liquid paint configured to form a photo-wettable painted coating, the liquid paint comprising:
a charge photo-ejector material; a charge transporter material; a charge storage material; and a carrier liquid configured to form the liquid paint including the charge photo-ejector material, the charge transporter material, and the charge storage material, wherein:
the charge storage material is characterized by a first surface energy differential with respect to the carrier liquid such that the charge storage material self-segregates at a first average depth from an air-liquid interface of the liquid paint to leave at least a portion of the charge storage material located at the air-liquid interface;the liquid paint is configured to one or more of: dry and cure to form a painted coating having an air-coating interface that includes the at least a portion of the self-segregated charge storage material; andin the painted coating, the charge photo-ejector material is configured to absorb light and photo-eject a charge into the charge transporter material, the charge transporter material is configured to transport the charge from the charge photo-ejector material to the charge storage material, and the charge storage material is configured to store at least a portion of the charge at the air-coating interface to provide the photo-wettable painted coating.