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公开(公告)号：US09845334B1
公开(公告)日：2017-12-19
申请号：US15289611
申请日：2016-10-10
发明人： Patrick L. Feng , Joseph S. Carlson
IPC分类号： G01T1/20 , C07F9/46 , C09K11/06 , C07F7/08 , C07C209/08 , C07C211/54 , G01T3/06
CPC分类号： C07F9/46 , C07C209/08 , C07C211/54 , C07F7/0805 , C07F7/081 , C07F7/0827 , C07F9/5325 , C09K11/06 , C09K2211/1011 , C09K2211/1014 , G01T1/20 , G01T1/2023 , G01T3/06
摘要： A new family of neutron/gamma discriminating scintillators is disclosed that comprises stable organic glasses that may be melt-cast into transparent monoliths. These materials have been shown to provide light yields greater than solution-grown trans-stilbene crystals and efficient PSD capabilities when combined with 0.01 to 0.05% by weight of the total composition of a wavelength-shifting fluorophore. Photoluminescence measurements reveal fluorescence quantum yields that are 2 to 5 times greater than conventional plastic or liquid scintillator matrices, which accounts for the superior light yield of these glasses. The unique combination of high scintillation light-yields, efficient neutron/gamma PSD, and straightforward scale-up via melt-casting distinguishes the developed organic glasses from existing scintillators.
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公开(公告)号：US20220403235A1
公开(公告)日：2022-12-22
申请号：US17881859
申请日：2022-08-05
摘要： A plastic scintillator includes a polymeric matrix comprising a primary fluorophore capable of forming an amorphous glass in its pure form. The primary fluorophore is also capable of generating luminescence in the presence of ionizing radiation and includes: a central species including silicon; a luminescent organic group bonded to the central species or to an optional organic linker group, the luminescent organic group including fluorene or an analog thereof; and the optional organic linker group, if present, is bonded to the central species and the luminescent organic group.
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公开(公告)号：US11479717B1
公开(公告)日：2022-10-25
申请号：US16198424
申请日：2018-11-21
摘要： A plastic scintillator includes a polymeric matrix comprising a primary fluorophore capable of forming an amorphous glass in its pure form. The primary fluorophore is also capable of generating luminescence in the presence of ionizing radiation and includes: a central species including silicon; a luminescent organic group bonded to the central species or to an optional organic linker group, the luminescent organic group including fluorene or an analog thereof; and the optional organic linker group, if present, is bonded to the central species and the luminescent organic group.
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公开(公告)号：US10538701B1
公开(公告)日：2020-01-21
申请号：US15898906
申请日：2018-02-19
IPC分类号： C09K11/07 , C09K11/58 , C09K11/60 , C09K11/54 , B33Y10/00 , C09B15/00 , C09B57/02 , C09B6/00 , C07D311/82 , C09B57/14
摘要： A fluorescent composition includes at least one of a fluorescent sensor compound and organic reporter molecules encapsulated in a microsphere structure. When encapsulated, the fluorescent sensor compound and the organic reporter molecules are distributed in a liquid organic matrix. When non-encapsulated, the remaining one of the fluorescent sensor compound and the organic reporter molecules reside in the matrix. In response to a force applied to the composition sufficient to break at least a portion of the microsphere structure, the fluorescent sensor compound and the organic reporter molecules are transformed into a non-reversible fluorescent state exhibiting a quantum yield greater than 0.2. The fluorescent state is objectively visually verifiable without physically contacting the composition.
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公开(公告)号：US10024983B1
公开(公告)日：2018-07-17
申请号：US15287555
申请日：2016-10-06
CPC分类号： G01T1/2033 , G01T1/203 , G01T1/204 , G01T1/2042
摘要： Exemplary embodiments of several new metal-loaded plastic scintillators are reported herein, comprising sterically and electronically isolated organotin additive complexes. Distance-dependent quenching relationships have been used as design criteria for the selection and synthesis of these organometallic additives, resulting in increased light yields and improved gamma-ray energy resolution values relative to previously reported PS/PVT examples. Fast scintillation decay properties have also been characterized in the prepared scintillators, rivaling the kinetics of stilbene-doped bibenzyl and BC-422Q-1% while providing higher light yields than these reference materials.
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公开(公告)号：US20210348054A1
公开(公告)日：2021-11-11
申请号：US17381412
申请日：2021-07-21
摘要： An article that includes a fluorescent composition having at least one of a fluorescent sensor compound and organic reporter molecules encapsulated in a microsphere structure. When encapsulated, the fluorescent sensor compound and the organic reporter molecules are distributed in a liquid organic matrix. When non-encapsulated, the remaining one of the fluorescent sensor compound and the organic reporter molecules reside in the matrix. In response to a force applied to the composition sufficient to break at least a portion of the microsphere structure, the fluorescent sensor compound and the organic reporter molecules are transformed into a non-reversible fluorescent state exhibiting a quantum yield greater than 0.2. The fluorescent state is objectively visually verifiable without physically contacting the composition.
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公开(公告)号：US11084978B2
公开(公告)日：2021-08-10
申请号：US16741843
申请日：2020-01-14
IPC分类号： C09K11/07 , C09K11/54 , C09K11/58 , C09K11/60 , C09D5/22 , B33Y80/00 , B33Y10/00 , C09B15/00 , C09B57/02 , C09B6/00 , C07D311/82 , C09B57/14
摘要： An article that includes a fluorescent composition having at least one of a fluorescent sensor compound and organic reporter molecules encapsulated in a microsphere structure. When encapsulated, the fluorescent sensor compound and the organic reporter molecules are distributed in a liquid organic matrix. When non-encapsulated, the remaining one of the fluorescent sensor compound and the organic reporter molecules reside in the matrix. In response to a force applied to the composition sufficient to break at least a portion of the microsphere structure, the fluorescent sensor compound and the organic reporter molecules are transformed into a non-reversible fluorescent state exhibiting a quantum yield greater than 0.2. The fluorescent state is objectively visually verifiable without physically contacting the composition.
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公开(公告)号：US10732304B1
公开(公告)日：2020-08-04
申请号：US15966953
申请日：2018-04-30
IPC分类号： C08L71/08 , C08F230/06 , C08F226/10 , C08F220/18 , G01T1/203
摘要： A plastic scintillator includes an anti-fog additive or comonomer. The plastic scintillator is formulated to resist the development of hydrothermally-induced aging defects (e.g. discoloration and “fogging”) while maintaining scintillation light output and other desirable physical properties.
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公开(公告)号：US10508233B1
公开(公告)日：2019-12-17
申请号：US15629954
申请日：2017-06-22
发明人： Patrick L. Feng , Joseph Carlson
摘要： A mixed compound glass scintillator includes a first compound and a second compound. The first compound has a Tg greater than 25° C., is organic, is capable of generating luminescence in the presence of ionizing radiation. The first compound includes a central species and a luminescent organic group bonded to the central species or to an optional organic linker group. The central species is selected from the group consisting of: carbon, silicon, and tin. The optional organic linker group, if present, is bonded to the central species and the luminescent organic group. The second compound also has a Tg greater than 25° C. The first and second compound are mixed and melted to form a glass material.
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