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Thiophene‐Fused‐Heteroaromatic Diones as Promising NIR Reflectors for Radiative Cooling
Author(s) -
Chen Wangqiao,
Song Yujie,
Zhang Liying,
Liu Ming,
Hu Xiao,
Zhang Qichun
Publication year - 2018
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201801347
Subject(s) - thiophene , near infrared spectroscopy , materials science , radiant energy , coating , radiation , radiant intensity , radiative transfer , optoelectronics , photochemistry , chemical engineering , chemistry , nanotechnology , optics , organic chemistry , physics , engineering
Developing appropriate NIR‐reflective materials to combat near–infrared (NIR) heat radiation (700–2500 nm) from sunlight, avoiding energy accumulation and reduce energy consumption, is important and highly desirable. In this research, four thiophene‐fused‐heteroaromatic diones were used as basic reflectors to investigate the relationship between their intrinsic molecular structures and NIR‐reflective properties. The reflectance intensity can be readily tuned by adjusting the length of the appended aliphatic side chains, as well as the strength of the electron‐donating groups. A methoxy‐substituted thiophene‐fused‐heteroaromatic dione showed the best performance in reflecting NIR, and it was used as a coating for a model glass house. The comparison of the internal temperature difference relative to a control house was measured and the maximum temperature was 12 °C lower than that in the control house.