High‐Performance Low‐Emissivity Paints Enabled by N‐Doped Poly(benzodifurandione) (n‐PBDF) for Energy‐Efficient Buildings
[2];
[2];
[2];
[3]
- School of Mechanical Engineering and Birck Nanotechnology Center Purdue University West Lafayette IN 47907 USA, James Tarpo Jr. and Magaret Tarpo Department of Chemistry Purdue University West Lafayette IN 47907 USA
- James Tarpo Jr. and Magaret Tarpo Department of Chemistry Purdue University West Lafayette IN 47907 USA
- School of Mechanical Engineering and Birck Nanotechnology Center Purdue University West Lafayette IN 47907 USA
- Material Science Engineering King Abdullah University of Science and Technology (KAUST) Thuwal 23955–6900 Saudi Arabia
Abstract Low‐emissivity (low‐e) paints reduce radiative heat exchange between buildings and the environment, stabilizing indoor climates and lowering air conditioning demand. However, low‐cost, durable, and colored low‐e paints have yet to be demonstrated. Here, an approach is proposed using n‐doped poly(benzodifurandione) (n‐PBDF), a transparent organic conducting polymer, coated over colored commercial paints. This achieves a low thermal emissivity of 0.19 in the mid‐infrared spectrum, attributed to the efficient charge transport of delocalized π‐electrons in n‐PBDF structure. The reduction in thermal emissivity aids in regulating building temperatures by minimizing heat transfer between buildings and their surroundings across diverse climate zones and seasons. The n‐PBDF coating preserves the underlying paint's color due to its high visible transparency, meeting aesthetic requirements. It also shows strong stability in accelerated indoor weathering tests, ensuring long‐term performance. Simulations estimate annual HVAC energy savings of over 10,800 kWh in San Francisco and 5,500 kWh in Chicago for the typical mid‐rise apartments. The paint's versatility, scalability, and durability make it suitable for buildings, vehicles, and greenhouses, aiding urban heat island mitigation.
- Sponsoring Organization:
- USDOE
- Grant/Contract Number:
- SC0023411
- OSTI ID:
- 2564301
- Journal Information:
- Advanced Functional Materials, Journal Name: Advanced Functional Materials; ISSN 1616-301X
- Publisher:
- Wiley Blackwell (John Wiley & Sons)Copyright Statement
- Country of Publication:
- Germany
- Language:
- English
Similar Records
Controlled Dedoping and Redoping of N‐Doped Poly(benzodifurandione) (n‐PBDF)
Dimensionality-Dependent Electronic Properties of the Highly Conducting n-Type Polymer, Poly(benzodifurandione)