The present invention relates to design and applications of a class of water-soluble small molecules represented by formula 1. The said molecules, in their dilute aqueous solutions, exhibit
lower critical solution temperature (LCST) phase transitions near
room temperature, inducing a temperature triggered switching of
opacity. Further, the present invention discloses a scalable smart window, akin to a radiative
energy management system that can be incorporated into the
built environment for imparting energy efficiency. The window fabrication is facile wherein the
aqueous solution is sandwiched between two transparent glass panes to enable modulation of light and
heat transmission. The dynamic window of present invention represents with multifarious applications in developing scalable, smart
energy management systems for indoor building environments is envisioned to be a major contribution towards cost effective
smart glass technologies.