Abstract
The fabrication of temperature responsive photonic polymers remains a challenge. Here, we report the fabrication of humidity-gated temperature-responsive infrared reflective photonic coatings using an easy-to-process bar-coating technique. At high humidity the hydroscopic cholesteric liquid crystalline polymer is able to absorb water vapour from the air causing swelling of the photonic coating. By increasing the temperature, water is desorbed from the coating, resulting in a reversible 420 nm shift of the photonic reflection band. In particular, it is shown that temperature-responsive single-layered broadband IR reflective coatings, prepared by creation of a pitch gradient of the cholesteric liquid crystals, might be suitable for smart window applications in high relative humidity environments such as greenhouses.
| Original language | English |
|---|---|
| Pages (from-to) | 6113-6119 |
| Number of pages | 7 |
| Journal | Journal of Materials Chemistry A |
| Volume | 7 |
| Issue number | 11 |
| DOIs | |
| Publication status | Published - 21 Mar 2019 |
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Humidity-gated, temperature-responsive photonic infrared reflective broadband coatings. / van Heeswijk, Ellen P.A.; Kloos, Joey J.H.; Grossiord, Nadia (Corresponding author); Schenning, Albertus P.H.J. (Corresponding author).
In: Journal of Materials Chemistry A, Vol. 7, No. 11, 21.03.2019, p. 6113-6119.Research output: Contribution to journal › Article › Academic › peer-review
TY - JOUR
T1 - Humidity-gated, temperature-responsive photonic infrared reflective broadband coatings
AU - van Heeswijk, Ellen P.A.
AU - Kloos, Joey J.H.
AU - Grossiord, Nadia
AU - Schenning, Albertus P.H.J.
PY - 2019/3/21
Y1 - 2019/3/21
N2 - The fabrication of temperature responsive photonic polymers remains a challenge. Here, we report the fabrication of humidity-gated temperature-responsive infrared reflective photonic coatings using an easy-to-process bar-coating technique. At high humidity the hydroscopic cholesteric liquid crystalline polymer is able to absorb water vapour from the air causing swelling of the photonic coating. By increasing the temperature, water is desorbed from the coating, resulting in a reversible 420 nm shift of the photonic reflection band. In particular, it is shown that temperature-responsive single-layered broadband IR reflective coatings, prepared by creation of a pitch gradient of the cholesteric liquid crystals, might be suitable for smart window applications in high relative humidity environments such as greenhouses.
AB - The fabrication of temperature responsive photonic polymers remains a challenge. Here, we report the fabrication of humidity-gated temperature-responsive infrared reflective photonic coatings using an easy-to-process bar-coating technique. At high humidity the hydroscopic cholesteric liquid crystalline polymer is able to absorb water vapour from the air causing swelling of the photonic coating. By increasing the temperature, water is desorbed from the coating, resulting in a reversible 420 nm shift of the photonic reflection band. In particular, it is shown that temperature-responsive single-layered broadband IR reflective coatings, prepared by creation of a pitch gradient of the cholesteric liquid crystals, might be suitable for smart window applications in high relative humidity environments such as greenhouses.
UR - http://www.scopus.com/inward/record.url?scp=85062819413&partnerID=8YFLogxK
U2 - 10.1039/c9ta00993k
DO - 10.1039/c9ta00993k
M3 - Article
AN - SCOPUS:85062819413
VL - 7
SP - 6113
EP - 6119
JO - Journal of Materials Chemistry A
JF - Journal of Materials Chemistry A
SN - 2050-7488
IS - 11
ER -