The effects of gamma-ray irradiation on organic materials of different conjugation lengths

Cheng Zhang; Edward W. Taylor

doi:10.1117/12.827288

9 September 2009 The effects of gamma-ray irradiation on organic materials of different conjugation lengths

Cheng Zhang, Edward W. Taylor

Proceedings Volume 7467, Nanophotonics and Macrophotonics for Space Environments III; 746707 (2009) https://doi.org/10.1117/12.827288
Event: SPIE Optical Engineering + Applications, 2009, San Diego, California, United States

Abstract

The radiation resistance of organic electro-optic and optoelectronic materials of different conjugation lengths for space applications is receiving increased attention. Earlier investigation reported that guest-host (G-H) poled polymer EO modulator devices composed of a phenyltetraene bridge-type chromophore in amorphous polycarbonate (CLD/APC) did not exhibit a decrease in EO response (i.e., an increase in modulation-switching voltage- V_π) following irradiation by low dose [10-160 krad(Si)] ⁶⁰Co gamma-rays. In this work, the post-irradiation responses of ⁶⁰Co gamma-rays on CLD1/APC thin films are examined by various chemical and spectroscopic methods including: a solubility test, thin-layer chromatography, proton nuclear magnetic resonance spectroscopy, UV-vis absorption, and infra-red absorption. The results indicate that CLD1 and APC did not decompose under gamma-ray irradiation at dose levels ranging from 66-274 krad(Si) and from 61-154 krad(Si), respectively which support the previously reported data. A comparison with an in situ proton irradiated DRI/PMMA material is also presented.

Citation Download Citation

Cheng Zhang and Edward W. Taylor "The effects of gamma-ray irradiation on organic materials of different conjugation lengths", Proc. SPIE 7467, Nanophotonics and Macrophotonics for Space Environments III, 746707 (9 September 2009); https://doi.org/10.1117/12.827288

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