Photooxidation Properties of Photosensitizer/Direct Dye Patterned Polyester/Cotton Fabrics
Photooxidation Properties of Photosensitizer/Direct Dye Patterned Polyester/Cotton Fabrics
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光敏剂/直接染料印花涤棉织物的光氧化性能
DOI：
10.1007/s12221-018-8068-4
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发表时间：
2018-08-01
影响因子：
2.5
通讯作者：
Wang, Qingqing
中科院分区：
文献类型：
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作者：
Chen, Wangbingfei;Wang, Weiwei;Wang, Qingqing
为了开发基于光动力失活机制的抗感染纺织品，我们在这里介绍了亚甲基蓝染色聚酯织物（称为mb -聚酯）的设计、染色过程、表征、基材光氧化研究和抗菌效果。测定了染料吸收率和表观tk /S（吸收和散射系数）值与MB浓度% （o.w.f）的关系，并发现两者之间存在相关性。采用模型底物1,5-二羟基萘（1,5- dhn）的光氧化研究表明，mb -聚酯织物能够以光照时间依赖的方式产生单线态氧。对金黄色葡萄球菌（ATCC-29213）的抗菌效果进行了评估，我们的最佳结果是在30分钟的氙灯照射（3500 mW/cm2, 420-780 nm）后，菌落形成单位(CFU)/mL减少99.89% （~3 log单位）。在这些结果的基础上，我们随后设计了图案双染涤纶/棉织物，其中mbdye涤纶与直接染料-染色棉花交替图案，并表明它们在1,5- dhn光氧化反应中保持了对单线态氧（1O2）的敏化能力。综上所述，这些发现表明MB是一种合适的光敏剂（PS）。aureus用于低成本聚酯基抗菌纺织品的实际开发，并且可以潜在地用于生产具有光动力抗菌失活机制的各种形式图案纺织品。
Towards the goal of developing anti-infective textiles based on a photodynamic inactivation mechanism, here we present the design, dyeing procedure, characterization, substrate photooxidation studies, and antibacterial efficacy of methylene blue-dyed polyester fabrics, termed MB-polyester. Dye-uptake and apparentK/S(absorption and scattering coefficient) values as a function of MB concentration % (o.w.f) were determined, and were found to correlate. Photooxidation studies employing the model substrate 1,5-dihydroxynaphthalene (1,5-DHN) revealed that the MB-polyester fabrics were able to generate singlet oxygen in an illumination time-dependent manner. Antibacterial efficacy was evaluated againstStaphylococcus aureus(ATCC-29213), with our best results achieving a 99.89 % (~3 log units) reduction in Colony-Forming Units (CFU)/mL after only 30 min illumination (Xenon lamp, 3500 mW/cm2, 420–780 nm). On the basis of these results with MB-polyester, we subsequently designed patterned dual-dyed polyester/cotton fabrics, wherein an alternating pattern of MBdyed polyester was combined with direct dyes-dyed cotton, and showed that their ability to sensitize singlet oxygen (1O2) in the photooxidation reaction of 1,5-DHN was maintained. Taken together, these findings suggest that MB is a suitable photosensitizer (PS) againstS. aureusfor the practical development of low-cost polyester-based antimicrobial textiles, and can potentially be used in the production of diverse form-patterned textiles that possess a photodynamic antimicrobial inactivation mechanism.