2017
DOI: 10.1002/pat.4067
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Optical properties of conjugated polymer: review of its change mechanism for ionizing radiation sensor

Abstract: A review on the change mechanism of conjugated polymer upon radiation exposure is presented. The change mechanism is mainly focused on the polymer's optical properties instead of its electrical properties. This research explores the effect of ionizing radiation on the optical change of conjugated polymer. This study also reviewed the possibility of using conjugated polymer as a radiation sensor vis‐à‐vis radiation type and the optical response. From material point of view, topochemical reaction, conjugation le… Show more

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Cited by 18 publications
(11 citation statements)
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References 89 publications
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“…Conducting polymers deserve much emphasis due to their economic importance, electrical conductivity, optical properties, and good environmental stability . However, conducting polymers have poor solubility, thermal stability, and mechanical properties, which make their processing more difficult .…”
Section: Introductionmentioning
confidence: 99%
“…Conducting polymers deserve much emphasis due to their economic importance, electrical conductivity, optical properties, and good environmental stability . However, conducting polymers have poor solubility, thermal stability, and mechanical properties, which make their processing more difficult .…”
Section: Introductionmentioning
confidence: 99%
“…Consequently, the energy of the π-π* transition decreases with an increase in the degree of polymerization. An increase in the length of the chains moves the λ max of the polymer to longer wavelengths (bathochromic shift) (Isa et al, 2017;Samuel et al, 1994). A shift in the absorption peaks to the visible region was also reported for PHDA-PVB films (Soliman et al, 2018a).…”
Section: Color Change and Spectrophotometric Assessment Of Dpd-pva Filmsmentioning
confidence: 58%
“…In addition, radiation-sensitive compounds such as diacetylenes (DAs) are key materials for developing film dosimeters/sensors useful in a wide range of irradiation applications (Abdel-Fattah and Soliman, 2017;Chu et al, 1990;Devic, 2011;Patel, 1981;Soliman et al, 2013a;Soliman et al, 2018;Watanabe et al, 2006). In favorable cases, DAs polymerize topochemically in the crystalline state and undergo a color change when exposed to an ionizing radiation, thereby producing πconjugated 1D structures, the polydiacetylenes (PDAs) (Scheme 1) (Baughman, 1972;Isa et al, 2017;Krishnan et al, 2019;Matsuzawa et al, 2001;Ogawa, 1995;Sarkar et al, 1999;Wegner, 1972Wegner, , 1971Weston et al, 2020). Gafchromic films are constructed from microcrystals of a DA dispersed in gelatin and coated onto polyester sheets (Chu et al, 1990;William L. McLaughlin et al, 1996;Saylor et al, 1988;Watanabe et al, 2006).…”
Section: Introductionmentioning
confidence: 99%
“…The degree of anisotropy, conjugation length and topochemical reaction are three specic chemical aspects inuencing the optical property. 92 Topochemical reactions are triggered by exposure to UV radiation, gamma radiation and X-ray radiation, by thermal annealing. Solvent types also induce topochemical reactions.…”
Section: Electroluminescence Electrochromic and Photochromic Effects Of Conjugated Polymersmentioning
confidence: 99%