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The short wave near-infrared fluorescence properties of two p-azaquinodimethane (p-AQM)-based conjugated polymers

Journal of Innovative Optical Health Sciences 2020年第5期3卷 96-104页

作者： Yaowei Zhu Yawei Miao Tingting Xue Youchang Liu Chunying Zheng Jiping Ma Weiqiang Tan Shuguang Wen Chuantao Gu School of Environmental and Municipal Engineering qingdao University of Technology qingdao 266580 P.R.China CAS Key Laboratory of Biobased Materials qingdao institute of Bioenergy and Bioprocess Technology Chinese Academy of Sciences qingdao 266101 P.R.China China United Test e Evaluation(qingdao)Co. Ltd.Qingdao 266011P.R.China qingdao institute of textile fibre supervision and inspection Qingdao 266061P.R.China

The absorption,scattering,and autofluorescence of biological tissues in short-wave infrared re-gion(SWIR,900-1700 nm)are relatively low,so SWIR fluorescence usually has deeper pene-tration into living tissues,and can show a higher signal-to-noise ratio when used for imaging in ***,there are few types of organic SWIR fluorescent materials *** this work,p-azaquinodimethane(p-AQM)with a quinoid structure is used as the acceptor unit,and car-bazole or fluorene with sp3 hybridization are used as the donor units,two conjugated polymers were *** quinone structure is conducive to the redshift of absorption and fluores-cence spectra,and the sp3 hybridization structure is conducive to weakening the aggregation quenching of polymer *** and PCz exhibited absorption peaks of 492 nm and 508 nm,*** emission peaks of the two polymers are 920 nm and 950 nm,respec-tively,both in the short-wave near infrared *** quantum yield(QY)of PF and PCz is 0.4%and 0.3%,respectively.

关键词： Short-wave infrared region fluorescence p-azaquinodimethane conjugated polymers

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Influencing Factors of Fabric-Skin Adhesion Based on Gray Correlation Analysis Method

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Journal of Donghua University(English Edition) 2016年第4期33卷 644-648页

作者：纪峰谢剑飞张琳婕李娜张瑞云杨欣卉 Key Laboratory of textile Science & Technology Ministry of Education Shanghai 201620 China College of textiles Donghua University Shanghai 201620 China Guangzhou fibre Product Testing and Research institute Guangzhou 511440 China

Fabric-skin adhesion was objectively described by the indices of the maximum adhesion force F_(max) , the maximum separation distance L_(max) ,and adhesion work W as well as the adhesion force-separation distance curve. Firstly,gray correlation analysis method was adopted to investigate the correlation levels between adhesion indices,and secondly the relative importance of fabric structural parameters to fabric-skin adhesion,as well as the correlation levels between skin adhesion, water absorption, and wicking properties of the fabric. The results prove that W exhibits clear correlations with both F_(max) and L_(max) , yet the relevance between F_(max) and L_(max) is weak. Fabric adhesion indices are most associated with fabric mass and least with fabric thickness,whereas fabric wicking and water absorption present closest correlation with fabric thickness. Therefore, it is concluded that the relevance between fabric wicking, water absorption, and skin-adhesion properties are rather comprehensive than straight.

关键词： wet fabric-skin adhesion water absorption fabric wicking gray correlation analysis correlated factor

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