NEIL BRANDA

SWITCH Materials Inc

4D LABS at Simon Fraser UniversityBritish ColumbiaCanada

HYBRID PHOTO- & ELECTROCHROMIC MATERIALSFOR ENERGY CONSERVATION

“Those who control materials control technology.”

Eiji Kobayashi – Panasonic

…using light and photoactivated materials

light

• the optoelectronic property of the isomers are unique

• can be tailored by changing ‘R’ groups

Adv. Mater. 2008, 20, 1998.

Adv. Mater. 2008, 20, 1998.

Angew. Chem. 2004, 43, 2812.Adv. Funct. Mater. 2007, 17, 786.

J. Am. Chem. Soc. 2009, 131, 15966.

Angew. Chem. 2004, 43, 2812.Adv. Funct. Mater. 2007, 17, 786.

J. Am. Chem. Soc. 2009, 131, 15966.

Inorg. Chem. 2005, 44, 5960Inorg. Chem. 2005, 44, 5960

J. Am. Chem. Soc. 2001, 123, 7447.J. Am. Chem. Soc. 2005, 127, 7272

J. Am. Chem. Soc. 2001, 123, 7447.J. Am. Chem. Soc. 2005, 127, 7272

Chem. Commun. 2002, 2274.J. Am. Chem. Soc. 2003, 125, 3404.

Chem. Commun. 2002, 2274.J. Am. Chem. Soc. 2003, 125, 3404.

Angew. Chem. Int. Ed. 2007, 46, 8017.

Angew. Chem. Int. Ed. 2007, 46, 8017.

Angew. Chem. 2005, 44, 2019.

Angew. Chem. 2005, 44, 2019.

Org. Lett. 2005, 7, 2969.Angew. Chem. Int. Ed.

2006, 45, 6820.

Org. Lett. 2005, 7, 2969.Angew. Chem. Int. Ed.

2006, 45, 6820.

Angew. Chem. 2001, 40, 1752Angew. Chem. 2001, 40, 1752

Adv. Mater. Opt. Electr.2001, 10, 245.

Adv. Mater. Opt. Electr.2001, 10, 245.

Adv. Mater. 2004, 16, 123.Eur J. Org. Chem, 2005, 1233.

Adv. Mater. 2004, 16, 123.Eur J. Org. Chem, 2005, 1233.

Org. Lett. 2003, 5, 1183Org. Lett. 2003, 5, 1183

Chem. Commun. 2003, 954.Chem. Commun. 2003, 954.

Adv. Mater. 2005, 17, 2134.Adv. Mater. 2005, 17, 2134.

J. Am. Chem. Soc. 2001, 123, 1784.

J. Am. Chem. Soc. 2001, 123, 1784.

Warford & Carlingunpublished

Warford & Carlingunpublished

Chem. Commun. 2011, 47,

10954.

Chem. Commun. 2011, 47,

10954.

Adv. Mater. 2001, 13, 347.

Adv. Mater. 2001, 13, 347.

Angew. Chem. Int. Ed.

2012, 51, 2741.

Angew. Chem. Int. Ed.

2012, 51, 2741.

Angew. Chem. Int. Ed. 2008, 47, 7644.

Angew. Chem. Int. Ed. 2008, 47, 7644.

Org. Lett. 2000, 2, 2749.Macromolecules 2003, 36, 298.

Org. Lett. 2000, 2, 2749.Macromolecules 2003, 36, 298.

Adv. Mater. 2003, 15, 745.Adv. Mater. 2003, 15, 745.

Angew. Chem. Int. Ed. 2008, 120, 5112.

Angew. Chem. Int. Ed. 2008, 120, 5112.

J. Photochem. Photobiol.

2008, 200, 74.

J. Photochem. Photobiol.

2008, 200, 74.

Angew. Chemie. Int. Ed.2012, on line

Angew. Chemie. Int. Ed.2012, on line

Erno & AsadiradOrg. Bio. Chem.2012, 10, 2787.

Erno & AsadiradOrg. Bio. Chem.2012, 10, 2787.

J. Am. Chem. Soc.2009, 131, 10838.

J. Am. Chem. Soc.2009, 131, 10838.

Inorg. Chem. 2011, 50, 4956.J. Am. Chem. Soc. 2009, 131, 15966.Inorg. Chem. 2009, 48, 19.

Inorg. Chem. 2011, 50, 4956.J. Am. Chem. Soc. 2009, 131, 15966.Inorg. Chem. 2009, 48, 19.

Adv. Mater. 2008, 20, 1998.

Adv. Mater. 2008, 20, 1998.

Angew. Chem. 2004, 43, 2812.Adv. Funct. Mater. 2007, 17, 786.

J. Am. Chem. Soc. 2009, 131, 15966.

Angew. Chem. 2004, 43, 2812.Adv. Funct. Mater. 2007, 17, 786.

J. Am. Chem. Soc. 2009, 131, 15966.

J. Photochem. Photobiol.

2008, 200, 74.

J. Photochem. Photobiol.

2008, 200, 74.

Inorg. Chem. 2005, 44, 5960Inorg. Chem. 2005, 44, 5960

J. Am. Chem. Soc. 2001, 123, 7447.J. Am. Chem. Soc. 2005, 127, 7272

J. Am. Chem. Soc. 2001, 123, 7447.J. Am. Chem. Soc. 2005, 127, 7272

Chem. Commun. 2002, 2274.J. Am. Chem. Soc. 2003, 125, 3404.

Chem. Commun. 2002, 2274.J. Am. Chem. Soc. 2003, 125, 3404.

Angew. Chem. Int. Ed. 2007, 46, 8017.

Angew. Chem. Int. Ed. 2007, 46, 8017.

Angew. Chem. Int. Ed. 2008, 47, 7644.

Angew. Chem. Int. Ed. 2008, 47, 7644.

Angew. Chem. 2005, 44, 2019.

Angew. Chem. 2005, 44, 2019.

Angew. Chem. Int. Ed. 2008, 120, 5112.

Angew. Chem. Int. Ed. 2008, 120, 5112.

Org. Lett. 2005, 7, 2969.Angew. Chem. Int. Ed.

2006, 45, 6820.

Org. Lett. 2005, 7, 2969.Angew. Chem. Int. Ed.

2006, 45, 6820.

Angew. Chem. 2001, 40, 1752Angew. Chem. 2001, 40, 1752

Adv. Mater. 2003, 15, 745.Adv. Mater. 2003, 15, 745.

Org. Lett. 2000, 2, 2749.Macromolecules 2003, 36, 298.

Org. Lett. 2000, 2, 2749.Macromolecules 2003, 36, 298.

Adv. Mater. Opt. Electr.2001, 10, 245.

Adv. Mater. Opt. Electr.2001, 10, 245.

Adv. Mater. 2004, 16, 123.Eur J. Org. Chem, 2005, 1233.

Adv. Mater. 2004, 16, 123.Eur J. Org. Chem, 2005, 1233.

Org. Lett. 2003, 5, 1183Org. Lett. 2003, 5, 1183

Chem. Commun. 2003, 954.Chem. Commun. 2003, 954.

Adv. Mater. 2005, 17, 2134.Adv. Mater. 2005, 17, 2134.

J. Am. Chem. Soc. 2001, 123, 1784.

J. Am. Chem. Soc. 2001, 123, 1784.

J. Am. Chem. Soc.2009, 131, 10838.

J. Am. Chem. Soc.2009, 131, 10838.

Warford & Carlingunpublished

Warford & Carlingunpublished

Adv. Mater. 2001, 13, 347.

Adv. Mater. 2001, 13, 347.

Erno & AsadiradOrg. Bio. Chem.2012, 10, 2787.

Erno & AsadiradOrg. Bio. Chem.2012, 10, 2787.

Inorg. Chem. 2011, 50, 4956.J. Am. Chem. Soc. 2009, 131, 15966.Inorg. Chem. 2009, 48, 19.

Inorg. Chem. 2011, 50, 4956.J. Am. Chem. Soc. 2009, 131, 15966.Inorg. Chem. 2009, 48, 19.

Chem. Commun. 2011, 47,

10954.

Chem. Commun. 2011, 47,

10954.

Angew. Chemie. Int. Ed.2012, on line

Angew. Chemie. Int. Ed.2012, on line

Angew. Chem. Int. Ed.

2012, 51, 2741.

Angew. Chem. Int. Ed.

2012, 51, 2741.

light state dark state

light

7

8

light state dark state

sunlight

electricity

clearedactivated

• variable transmission windows reduce penetration of light

buildings consume 68% of all electricity in the US30% of building’s energy is lost through inneficient windows

architectural

solar heat through glazing increases AC use

decreases fuel economy up to 30%

reduces the battery range ofElectric Vehicles

automotive

substrate

transparentelectrode (ITO)

transparentelectrode (ITO)

hybrid layer

• gel electrolyte film encapsulated between glass sheets

Thank you