Preparation of persistently luminescent polyacrylic acid-based nanocomposite ink for secure encoding

材料科学 光致发光 扫描电子显微镜 纳米复合材料 吸光度 傅里叶变换红外光谱 可见光谱 化学工程 纳米技术 光电子学 光学 复合材料 物理 工程类
作者
Meera Moydeen Abdul Hameed,Badr M. Thamer
出处
期刊:Journal of Photochemistry and Photobiology A-chemistry [Elsevier]
卷期号:448: 115319-115319 被引量:3
标识
DOI:10.1016/j.jphotochem.2023.115319
摘要

Security encoding that use photochromism has been an appealing method for fabricating efficient authentication substrates. In order to overcome counterfeiting, a unique photochromic ink was created to be utilized as a stamped film, that persistently emits light under both ultraviolet rays and darkness. Nanoparticles of lanthanide-doped aluminate (NLDA) dispersed in a polymer binder was utilized to produce a smart composite ink. In order to develop a transparent film, NLDA must be evenly distributed throughout the polyacrylic acid ink solution. Cellulosic paper sheets were stamped with the fluorescent and color-tunable nanocomposite ink. As proved by CIE (Commission Internationale de ĺEclairage) Lab parameters, a transparent appearance was achieved by stamping a homogeneous ink layer onto paper surface. Using photoluminescence spectroscopy, the stamped surfaces exhibited an absorbance peak at 365 nm and a fluorescent band at 519 nm. The stamped pattern is invisible under daylight; however, a change in color was detected from colorless to green under UV rays. X-ray diffraction (XRD) and transmission electron microscopy (TEM) were employed to explore the structure of NLDA. Infrared spectroscopy (FTIR), energy-dispersive X-ray (EDS), scanning electron microscopy (SEM), and X-ray fluorescence (XRF) were all employed to determine the morphological features of the stamped papers. The imprinted paper sheets exhibited photochromism that could be switched back and forth between visible (colorless) and ultraviolet (green) lights without fatigue. Persistent greenish-yellow emission was detectable in the dark after exposure to smartphone light for a few seconds. Stamped sheets were analyzed for their mechanical properties, and the rheology of the photoluminescent ink was studied.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
大幅提高文件上传限制,最高150M (2024-4-1)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
xmy完成签到,获得积分10
2秒前
阳光的凝冬完成签到 ,获得积分10
8秒前
20秒前
吕岩完成签到,获得积分10
22秒前
croissante完成签到 ,获得积分10
22秒前
GuanYZ完成签到 ,获得积分10
25秒前
充电宝应助liuq采纳,获得10
30秒前
丘比特应助科研通管家采纳,获得10
37秒前
充电宝应助科研通管家采纳,获得10
37秒前
reflux应助科研通管家采纳,获得10
37秒前
wipmzxu应助科研通管家采纳,获得10
37秒前
39秒前
liuq发布了新的文献求助10
45秒前
fox完成签到 ,获得积分10
46秒前
连难胜完成签到 ,获得积分10
51秒前
wildeager完成签到,获得积分10
57秒前
Wency完成签到,获得积分10
1分钟前
感动白开水完成签到,获得积分10
1分钟前
huahua完成签到 ,获得积分10
1分钟前
Docsiwen完成签到 ,获得积分10
1分钟前
修士完成签到 ,获得积分10
1分钟前
Yt完成签到 ,获得积分10
1分钟前
江南烟雨如笙完成签到 ,获得积分10
1分钟前
生而追梦不止完成签到,获得积分10
1分钟前
俊逸的白梦完成签到 ,获得积分10
1分钟前
woshiwuziq完成签到 ,获得积分10
1分钟前
1分钟前
potassalt完成签到 ,获得积分10
1分钟前
mengmenglv完成签到 ,获得积分0
2分钟前
terminus完成签到,获得积分10
2分钟前
2分钟前
炸鸡完成签到 ,获得积分10
2分钟前
2分钟前
scot应助老常加油哦采纳,获得10
2分钟前
Yunsong完成签到,获得积分10
2分钟前
FashionBoy应助jimmy采纳,获得10
2分钟前
我就想看看文献完成签到 ,获得积分10
2分钟前
Haomee完成签到,获得积分10
2分钟前
卞卞完成签到,获得积分10
2分钟前
2分钟前
高分求助中
Un calendrier babylonien des travaux, des signes et des mois: Séries iqqur îpuš 1036
Sustainable Land Management: Strategies to Cope with the Marginalisation of Agriculture 1000
Corrosion and Oxygen Control 600
Python Programming for Linguistics and Digital Humanities: Applications for Text-Focused Fields 500
Heterocyclic Stilbene and Bibenzyl Derivatives in Liverworts: Distribution, Structures, Total Synthesis and Biological Activity 500
重庆市新能源汽车产业大数据招商指南(两链两图两池两库两平台两清单两报告) 400
Division and square root. Digit-recurrence algorithms and implementations 400
热门求助领域 (近24小时)
化学 材料科学 医学 生物 有机化学 工程类 生物化学 纳米技术 物理 内科学 计算机科学 化学工程 复合材料 遗传学 基因 物理化学 催化作用 电极 光电子学 量子力学
热门帖子
关注 科研通微信公众号,转发送积分 2546182
求助须知:如何正确求助?哪些是违规求助? 2175672
关于积分的说明 5600285
捐赠科研通 1896399
什么是DOI,文献DOI怎么找? 946273
版权声明 565379
科研通“疑难数据库(出版商)”最低求助积分说明 503557