{"title":"Drying Process of Ink Dot Analyzed by Using Digital Holographic Microscope","authors":"M. Yokota","doi":"10.4011/shikizai.95.297","DOIUrl":"https://doi.org/10.4011/shikizai.95.297","url":null,"abstract":"","PeriodicalId":17709,"journal":{"name":"Journal of the Japan Society of Colour Material","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81159959","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Spontaneous Formation of Monodisperse Structural Colored Particles Obtained by Rotational Stirring","authors":"Y. Takeoka","doi":"10.4011/shikizai.95.302","DOIUrl":"https://doi.org/10.4011/shikizai.95.302","url":null,"abstract":"","PeriodicalId":17709,"journal":{"name":"Journal of the Japan Society of Colour Material","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73831508","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Selective Inactivation of Microorganisms with Photocatalyst","authors":"Sho Usuki, K. Yamatoya, K. Nakata","doi":"10.4011/shikizai.95.262","DOIUrl":"https://doi.org/10.4011/shikizai.95.262","url":null,"abstract":"","PeriodicalId":17709,"journal":{"name":"Journal of the Japan Society of Colour Material","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75525014","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Development of the Photocatalytic Bioaerosol Elimination System Specialized in the Control of Aerosol Infection such as COVID-19","authors":"N. Negishi, Ryou Yamano, Taro Sato","doi":"10.4011/shikizai.95.256","DOIUrl":"https://doi.org/10.4011/shikizai.95.256","url":null,"abstract":"","PeriodicalId":17709,"journal":{"name":"Journal of the Japan Society of Colour Material","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73378905","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Nanohybrid Photocatalysts with Heteroepitaxial Junction for Solar Chemical Transformations","authors":"S. Naya, H. Tada","doi":"10.4011/shikizai.95.275","DOIUrl":"https://doi.org/10.4011/shikizai.95.275","url":null,"abstract":"","PeriodicalId":17709,"journal":{"name":"Journal of the Japan Society of Colour Material","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86913339","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Energy Conversion Using Photocatalysts Learning from Photosynthesis","authors":"Haruki Nagakawa, Morio Nagata","doi":"10.4011/shikizai.95.269","DOIUrl":"https://doi.org/10.4011/shikizai.95.269","url":null,"abstract":"","PeriodicalId":17709,"journal":{"name":"Journal of the Japan Society of Colour Material","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78906810","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"The Latest Technology for Large Format Inkjet Printers","authors":"Y. Nakazawa","doi":"10.4011/shikizai.95.287","DOIUrl":"https://doi.org/10.4011/shikizai.95.287","url":null,"abstract":"","PeriodicalId":17709,"journal":{"name":"Journal of the Japan Society of Colour Material","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84568074","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Yuri Nakazawa, K. Godo, Y. Yamaji, Takayuki Masazumi, Shinya Kume
{"title":"Development of New Standard LED for Total Luminous Flux Evaluation","authors":"Yuri Nakazawa, K. Godo, Y. Yamaji, Takayuki Masazumi, Shinya Kume","doi":"10.4011/shikizai.95.282","DOIUrl":"https://doi.org/10.4011/shikizai.95.282","url":null,"abstract":"","PeriodicalId":17709,"journal":{"name":"Journal of the Japan Society of Colour Material","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75224689","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Appearance and Rheology of Automotive Topcoats","authors":"K. Tachi","doi":"10.4011/shikizai.95.235","DOIUrl":"https://doi.org/10.4011/shikizai.95.235","url":null,"abstract":"","PeriodicalId":17709,"journal":{"name":"Journal of the Japan Society of Colour Material","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73755014","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Toshiyuki Uesaka, Fumihisa Komeya, Shoujirou Yoshida, T. Shimeno, S. Yagi, Takeshi Maeda
To gain insight into the improvement of photostability for blue fluorescent benzotriazole derivatives, we synthesized dyad molecules consisting of various derivatives and UV absorbers 2-(2-hydroxyphenyl)-2 H -benzotriazole components (2HPBTA) linked by an ester bond. The dyad molecules showed blue fluorescence, but their fluorescence quantum yields were lower than those of blue fluorescent benzotriazole derivatives without 2HPBTA. The quantum chemical calculations predicted that the excited state intramolecular proton transfer (ESIPT) is thermodynamically allowed for the dyad molecules and is a factor that inhibits radiative deactivation. The polymer films containing dyad molecules showed blue fluorescence, but their fluorescence intensities were decreased after continuous UV irradiation. This result suggested that the 2HPBTA components linked by an ester bond do not affect the photostability of the dyad molecules. On the other hand, the substituents on the benzene ring of blue fluorescent benzotriazole components significantly affected the fluorescence intensities of the dyad molecules.
为了深入了解蓝色荧光苯并三唑衍生物的光稳定性，我们合成了由各种衍生物和紫外线吸收剂组成的双分子2-(2-羟基苯基)-2 H -苯并三唑成分(2HPBTA)通过酯键连接。双偶分子呈现蓝色荧光，但其荧光量子产率低于不含2HPBTA的苯并三唑衍生物的蓝色荧光。量子化学计算预测，激发态分子内质子转移(ESIPT)是热力学允许的二元分子，是一个抑制辐射失活的因素。含有双分子的聚合物薄膜呈现蓝色荧光，但连续紫外照射后其荧光强度降低。这一结果表明，由酯键连接的2HPBTA组分不影响二元分子的光稳定性。另一方面，蓝色荧光苯并三唑组分苯环上的取代基显著影响双分子的荧光强度。
{"title":"Synthesis of Blue Fluorescent Benzotriazoles Incorporating 2-(2-Hydroxyphenyl)-2H-Benzotriazole Derivatives and their Optical Properties and Photostability","authors":"Toshiyuki Uesaka, Fumihisa Komeya, Shoujirou Yoshida, T. Shimeno, S. Yagi, Takeshi Maeda","doi":"10.4011/shikizai.95.220","DOIUrl":"https://doi.org/10.4011/shikizai.95.220","url":null,"abstract":"To gain insight into the improvement of photostability for blue fluorescent benzotriazole derivatives, we synthesized dyad molecules consisting of various derivatives and UV absorbers 2-(2-hydroxyphenyl)-2 H -benzotriazole components (2HPBTA) linked by an ester bond. The dyad molecules showed blue fluorescence, but their fluorescence quantum yields were lower than those of blue fluorescent benzotriazole derivatives without 2HPBTA. The quantum chemical calculations predicted that the excited state intramolecular proton transfer (ESIPT) is thermodynamically allowed for the dyad molecules and is a factor that inhibits radiative deactivation. The polymer films containing dyad molecules showed blue fluorescence, but their fluorescence intensities were decreased after continuous UV irradiation. This result suggested that the 2HPBTA components linked by an ester bond do not affect the photostability of the dyad molecules. On the other hand, the substituents on the benzene ring of blue fluorescent benzotriazole components significantly affected the fluorescence intensities of the dyad molecules.","PeriodicalId":17709,"journal":{"name":"Journal of the Japan Society of Colour Material","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82811856","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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