Near-infrared reflective properties of perylene derivatives

Kaur, Balwinder; Quazi, Nurul H.; Ivanov, I.N.; Bhattacharya, S. N.

doi:10.1016/j.dyepig.2011.06.011

Cited by 68 publications

(61 citation statements)

References 16 publications

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“…For example, the relative reflectance values range from 38 to 108 at 10240 cm -1 (980 nm) and 20 to 65 at 6000 cm -1 (1665 nm). As noted previously, [15] the PDI-C 6 OH pigment is black in appearance but exhibits significantly greater reflectance than carbon black at 10,000 cm -1 . N,N'-Bis(2,6-diisopropylphenyl)-1,6,7,12-tetraphenoxyperylene-3,4:9,10-tetracarboxdiimide (LG) is a well-known NIR pigment, that is also based on a PDI core.…”

Section: Resultsmentioning

confidence: 65%

“…Derivatives of perylene-3,4:9,10-tetracarboxylic diimide (PDI) with N-hexanol (PDI-C 6 OH), N-ethylmorpholine (PDI-C 2 morph), and N-para-phenol (PDI-C 6 H 4 OH) substituents have been found to exhibit interesting near-infrared characteristics [15]. Plots of the relative NIR reflectance of these PDI derivatives in polypropylene films are depicted in Nevertheless, it is clear from these plots that addition of the perylene derivatives to the PP matrix leads to a significant increase in relative reflectance of the films i.e.…”

Section: Resultsmentioning

confidence: 99%

“…All PDI derivatives in this study were prepared as reported previously [15]. All pigments were dispersed in polypropylene (PP) using a 9000 Rheocord HAAKE mixer.…”

Section: Experimental Nir Reflectance Measurementsmentioning

confidence: 99%

“…In comparison, our recent experimental study [15], of a series of perylene derivatives dispersed in polypropylene revealed interesting properties in the NIR region including significant variation in the levels of NIR-reflectance. The purpose of this study is to combine experimental NIR measurements with detailed theoretical characterisation, to account for the observed trends in reflectance for this series of molecules.…”

Section: A C C E P T E D Accepted Manuscriptmentioning

confidence: 99%

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Interpreting the near-infrared reflectance of a series of perylene pigments

2013

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This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. and combination modes of fundamental IR vibrations appear to be more important in explaining the observed variations in NIR reflectance/absorbance. Aromatic groups lead to a small number of intense NIR bands, while alkyl groups generally lead to a greater number of less intense NIR bands. However, neighbouring group effects and/or a molecular dipole moment can substantially alter the intensity of these bands.

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Section: Resultsmentioning

confidence: 65%

Section: Resultsmentioning

confidence: 99%

“…All PDI derivatives in this study were prepared as reported previously [15]. All pigments were dispersed in polypropylene (PP) using a 9000 Rheocord HAAKE mixer.…”

Section: Experimental Nir Reflectance Measurementsmentioning

confidence: 99%

Section: A C C E P T E D Accepted Manuscriptmentioning

confidence: 99%

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Interpreting the near-infrared reflectance of a series of perylene pigments

2013

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“…Pigments are colour compounds that are responsible to give colour to objects as they selectively absorb the visible light and reflect the remainder corresponding to its colour. Apart from the visible region, pigments also interact with other wavelengths of light in the electromagnetic spectrum [1][2][3] . Roughly 5% of the Sunlight that reaches the Earth's surface is in the form of ultraviolet (UV) (wavelength between 300 and 400nm) (see Figure 1) which is the main responsible by the photo degradation of organic materials including organic coatings.…”

Section: Introductionmentioning

confidence: 99%

Development of paints with infrared radiation reflective properties

et al. 2015

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SbstractLarge buildings situated in hot regions of the Globe need to be agreeable to their residents. Air conditioning is extensively used to make these buildings comfortable, with consequent energy consumption. Absorption of solar visible and infrared radiations are responsible for heating objects on the surface of the Earth, including houses and buildings. To avoid excessive energy consumption, it is possible to use coatings formulated with special pigments that are able to reflect the radiation in the near-infrared, NIR, spectrum. To evaluate this phenomenon an experimental study about the reflectivity of paints containing infrared-reflective pigments has been made. By irradiating with an IR source and by measuring the surface temperatures of the samples we evaluated: color according to ASTM D 2244-14, UV/VIS/NIR reflectance according to ASTM E 903-12 and thermal performance. Additionally, the spectral reflectance and the IR emittance were measured and the solar reflectance of the samples were calculated. The results showed that plates coated with paints containing IR-reflecting pigments displayed lower air temperature on the opposite side as compared to conventional coatings, indicating that they can be effective to reflect NIR and decrease the temperature of buildings when used in roofs and walls.

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Thiophene‐Fused‐Heteroaromatic Diones as Promising NIR Reflectors for Radiative Cooling

et al. 2018

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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.

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Near-infrared reflective properties of perylene derivatives

Cited by 68 publications

References 16 publications

Interpreting the near-infrared reflectance of a series of perylene pigments

Interpreting the near-infrared reflectance of a series of perylene pigments

Development of paints with infrared radiation reflective properties

Thiophene‐Fused‐Heteroaromatic Diones as Promising NIR Reflectors for Radiative Cooling

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