CN112852409B - 一种基于aie分子的潜指纹显现浸泡剂及其制备方法与应用 - Google Patents
一种基于aie分子的潜指纹显现浸泡剂及其制备方法与应用 Download PDFInfo
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Abstract
本发明公开了一种基于AIE分子的潜指纹显现浸泡剂及其制备方法与应用,本发明所述潜指纹显现浸泡剂包含AIE分子、表面活性剂和去离子水,将AIE分子和表面活性剂按照一定比例,均匀分散在一定重量的去离子水中,得到基于AIE分子的潜指纹显现浸泡剂。将潜指纹显现浸泡剂滴涂在客体表面或将客体浸泡到指纹显现浸泡剂中,利用疏水‑疏水作用和静电吸附原理进行显现,在紫外灯下可以清晰的看到指纹纹路。与现有的指纹显现剂相比,基于AIE分子的潜指纹显现浸泡剂显示出优异的指纹显像效果。本发明中的潜指纹显现浸泡剂,原料易得、制备工艺简单、使用操作方便、显现快速、适用范围广,具有较大的实际应用价值,可用于现场指纹检测。
Description
技术领域
本发明属于指纹鉴定技术领域,具体涉及一种基于AIE分子的潜指纹显现浸泡剂及其制备方法与应用。
背景技术
指纹因其具有人各不同、终身不变且分布规律等特点,被广泛应用于法医刑侦领域中人体的识别和日常生活中安全检验与访问控制等。潜指纹是指手指或手掌接触物体表面而遗留的肉眼不可见的印记,常被作为侦破案件的基础,为寻找、发现和确定犯罪嫌疑人提供有力证据。目前用于基于荧光性物质的潜指纹显现的技术与方法主要有化学染色法和粉末显像法。
专利CN111320647A公开了一种硅烷桥联发光材料及其制备方法、应用和显色剂,将含有共轭发光基团的氯代物经锂化,再与氯硅烷或三氟甲磺酰硅烷反应制得硅烷桥联发光材。该硅烷桥联发光材料和乙腈,可应用于潜指纹显示领域,实现易于操作,快速且高分辨率的潜指纹可视化成像。
专利CN111333072A公开了一种荧光硅量子点及其制备方法与应用,利用还原剂和硅源化合物通过Zn离子作用在水相中合成水溶性硅量子点,该荧光硅量子点粉末指纹显现清晰,有良好的应用效果,在不同的基板表面(玻璃、铝箔纸、称量纸、木头)有良好的指纹显现性能。
但是这些方法在使用过程中,都存在着一些问题,如化学染色法在使用中常会引入大量的有机试剂,具有较强的生物毒性,直接威胁使用者的身体健康。粉末显像法对人体伤害较大,存在粉尘污染的问题,刷显过程对潜指纹有一定的破坏性。综上所述,如何在保证指纹还原精度的前提下,获得制备工艺简单、使用操作方便且生物毒性较小的潜指纹显现剂成为了当前潜指纹显现研究中亟待解决的问题。
发明内容
为了解决上述现有潜指纹显现技术中存在的问题,本发明提供了一种基于AIE分子的潜指纹显现浸泡剂及其制备方法与应用。
聚集诱导发光(AIE)分子作为一种新型的荧光分子,可以在聚集态下产生很强的荧光,如果将其通过一定的作用力附着在潜指纹纹路表面,形成聚集态,在一定波长的光线照射下,就可产生强度很高的肉眼可见的光,能够大幅提高潜指纹显现的灵敏度。借助表面性剂的增溶作用,可以避免大量使用有机试剂引起的生物毒性。基于上述原理,本发明提出了一种基于AIE分子的潜指纹显现浸泡剂及其制备方法与应用。本发明中的潜指纹显现浸泡剂,具有原料易得、制备工艺简单、使用操作方便、显现快速、适用范围广等特点,在潜指纹的显现技术领域具有极好的应用价值。
本发明采取的详细技术方案如下:
一种基于AIE分子的潜指纹显现浸泡剂,其包含:AIE分子、表面活性剂和去离子水。
优选的,所述AIE分子包含如下结构中的的至少一种:
上述结构式中,R1,R2,R3,R4,R5,R6各自独立地选自氢、卤素、羰基、酰胺基、磷氧基、取代或未取代的C3-C30氮杂芳基、取代或未取代的C6-C30含氰基芳基、取代或未取代的C3-C30含氰基杂芳基、取代或未取代的C6-C30含氟芳基、取代或未取代的C3-C30含氟杂芳基、取代或未取代的C1-C20烷基、取代或未取代的C1-C20烷氧基、取代或未取代的C2-C20烯基、取代或未取代的C6-C30芳基、取代或未取代的C3-C30杂芳基中的任意一种。
更优选的,所述AIE分子选自(TPE)或1,1-二甲基-2,5-二(4-苄基甲醛)-3,4-二苯基硅杂环戊二烯(DMTPS-ALD)等TPE衍生物中的至少一种。具体地,上述各AIE化合物的结构如下:
优选的,所述表面活性剂选自阳离子表面活性剂(如,十六烷基三甲基溴化铵、十四烷基三甲基溴化铵、十二烷基三甲基溴化铵等),或阴离子表面活性剂,(如,十二烷基磺酸钠、十四烷基磺酸钠、十二烷基苯磺酸钠等)的至少一种。
优选的,所述AIE分子、表面活性剂和水的重量比为(1-15):1:(1000-5000)。
本发明所述一种基于AIE分子的潜指纹显现浸泡剂制备方法,包括以下步骤:将表面活性剂先加入到水中,溶解后再加入AIE分子,并均匀分散。
优选的,所述分散利用超声和/或震荡和/或磁力搅拌的方式,使AIE分子和表面活性剂均匀分散到去离子水中。
本发明所述一种基于AIE分子的潜指纹显现浸泡剂的应用,用于潜指纹显现图像,包括以下步骤:
(1)吸取所述潜指纹显现浸泡剂,滴涂在潜指纹所在客体表面或将客体浸泡到指纹显现浸泡剂中,待1-5分钟后,取出客体,用水冲洗客体表面多余潜指纹显现浸泡剂;
(2)最后以光源对潜指纹所在表面进行照射,即可得到具有高分辨率的潜指纹显现图像。
优选的,所述客体为半渗透性和非渗透性材料,其中半渗透性材料包括纸板、泡沫、木板,非渗透性材料包括玻璃、金属、塑料、陶瓷。
优选的,所述光源包括:紫外灯,波长范围为250-400nm。
与现有技术相比,本发明的优点和效果在于:
与现有技术相比,本发明潜指纹显现浸泡剂不仅具备原料易得、制备工艺简单、使用操作方便等优点,而且生物毒性小、显现快速、适用范围广,最突出的优点是潜指纹显现精度高。本发明实现了一种基于AIE分子的潜指纹显现浸泡剂及其制备方法与应用,不仅对指纹显现技术的发展有着巨大的推动作用,而且具有极大的实际应用价值。
附图说明
图1为本发明实施例1产品基于AIE分子的潜指纹显现浸泡剂用于玻璃上的潜指纹成像图。
图2为本发明实施例1产品基于AIE分子的潜指纹显现浸泡剂用于陶瓷上的潜指纹成像图。
图3为本发明实施例1产品基于AIE分子的潜指纹显现浸泡剂用于不锈钢上的潜指纹成像图。
图4为本发明实施例1产品基于AIE分子的潜指纹显现浸泡剂用于纸板上的潜指纹成像图。
图5为本发明实施例1产品基于AIE分子的潜指纹显现浸泡剂用于木门上的潜指纹成像图。
图6为本发明实施例1产品基于AIE分子的潜指纹显现浸泡剂用于泡沫上的潜指纹成像图。
图7为本发明实施例1产品基于AIE分子的潜指纹显现浸泡剂用于塑料上的潜指纹成像图。
具体实施方式
以下通过具体实施方式的描述对本发明作进一步说明,但这并非是对本发明的限制,本领域技术人员根据本发明的基本思想,可以做出各种修改或改进,但是只要不脱离本发明的基本思想,均在本发明的范围之内。
本发明实施例潜指纹显现浸泡剂,原料组成包括AIE分子、表面活性剂和去离子水。
其中,表面活性剂作为潜指纹显现浸泡剂的主要成分,主要作用是改善AIE分子在水溶液中的团聚显像,使AIE分子均匀的分散在水溶液中。
在一优选实施方式中,表面活性剂选自十六烷基三甲基溴化铵、十四烷基三甲基溴化铵、十二烷基三甲基溴化铵、十二烷基磺酸钠、十四烷基磺酸钠、十二烷基苯磺酸钠的至少一种。
在一优选实施方式中,AIE分子选自TPE或DMTPS-ALD等TPE衍生物中的至少一种。TPE在紫外光照射下发出蓝色荧光,DMTPS-ALD在紫外光下呈现强烈绿色荧光,辨识度和灵敏度更高,更优先为DMTPS-ALD。
进一步的,本发明用于潜指纹显现的基于AIE分子的浸泡剂,其制备步骤可具体参考如下:
首先,将AIE分子、表面活性剂和水按照重量比为(1-15):1:(1000-5000)混合。
接着,采用超声和/或震荡和/或磁力搅拌的方式,使得AIE分子能够均匀分散于体系中,得到基于AIE分子的潜指纹显现浸泡剂。
上述制备方法工艺简单、原料易得、生产成本低,得到的潜指纹显现浸泡剂分散稳定性好。
本发明进一步提供了利用本发明基于AIE分子的潜指纹显现浸泡剂显现潜指纹的方法,本发明方法步骤具体参考如下:
用吸管吸取潜指纹显现浸泡剂,将其滴涂在潜指纹所在表面位置,或将客体浸泡到指纹显现浸泡剂中。待1-5分钟后,用清水冲掉潜指纹区域未吸附的浸泡剂。
最后以紫外灯对潜指纹所在表面进行照射,即可得到具有高分辨率的潜指纹显现图像。
本发明优选的TPE和DMTPS-ALD,可以选用365nm的紫外光源进行照射,以得到高分辨的潜指纹显现图像。
以下结合具体实施例对本发明做进一步的说明。
实施例1
一种基于AIE分子的潜指纹显现浸泡剂的制备方法如下:
(1)分别称取10mg DMTPS-ALD,1mg十二烷基磺酸钠,5g去离子水。
(2)将称好的十二烷基磺酸钠加入到去离子水中,然后再超声、震荡条件下,使十二烷基磺酸钠溶于水中,得到十二烷基磺酸钠溶液。
(3)向步骤(2)制得的十二烷基磺酸钠溶液中加入称好的DMTPS-ALD。再次超声,震荡,使DMTPS-ALD均匀分散,得到基于AIE分子的潜指纹显现浸泡剂。
实施例2
一种基于AIE分子的潜指纹显现浸泡剂的制备方法如下:
基于AIE分子的潜指纹显现浸泡剂的制备方法,大体上与实施例1相同,不同之处在于,各原料的组成和重量比分别为10mg DMTPS-ALD,3.5mg十二烷基苯磺酸钠,8g去离子水。
实施例3
一种基于AIE分子的潜指纹显现浸泡剂的制备方法如下:
基于AIE分子的潜指纹显现浸泡剂的制备方法,大体上与实施例1相同,不同之处在于,各原料的组成和重量比分别为20mg DMTPS-ALD,3.5mg十六烷基三甲基溴化铵,10g去离子水。
实施例4
一种基于AIE分子的潜指纹显现浸泡剂的制备方法如下:
基于AIE分子的潜指纹显现浸泡剂的制备方法,大体上与实施例1相同,不同之处在于,各原料的组成和重量比分别为50mg TPE,3mg十二烷基磺酸钠,8g去离子水。
实施例5
一种基于AIE分子的潜指纹显现浸泡剂对玻璃上的潜指纹显现
对实施例1中制得的基于AIE分子的潜指纹显现浸泡剂在玻璃上潜指纹显现效果检测,用吸管吸取一定体积的浸泡剂,滴涂在具有潜指纹的玻璃上,浸泡剂吸取体积以液体完全覆盖玻璃上潜指纹所在区域为宜。
待1分钟后,用清水冲洗潜指纹区域中未被吸附的浸泡剂,用365nm紫外光源照射潜指纹所在区域,得到清晰的玻璃上潜指纹显现图像,如图1所示。
实施例6
一种基于AIE分子的潜指纹显现浸泡剂对陶瓷上的潜指纹显现
按照实施5的潜指纹显现效果测试方法,将实施例1中制得的潜指纹显现浸泡剂施加在陶瓷上潜指纹的显现中,显现结果如图2所示。
实施例7
一种基于AIE分子的潜指纹显现浸泡剂对不锈钢上的潜指纹显现
按照实施5的潜指纹显现效果测试方法,将实施例1中制得的潜指纹显现浸泡剂施加在不锈钢上潜指纹的显现中,显现结果如图3所示。
实施例8
一种基于AIE分子的潜指纹显现浸泡剂对纸板上的潜指纹显现
按照实施5的潜指纹显现效果测试方法,将实施例1中制得的潜指纹显现浸泡剂施加在纸板上潜指纹的显现中,显现结果如图4所示。
实施例9
一种基于AIE分子的潜指纹显现浸泡剂对木门上的潜指纹显现
按照实施5的潜指纹显现效果测试方法,将实施例1中制得的潜指纹显现浸泡剂施加在木门上潜指纹的显现中,显现结果如图5所示。
实施例10
一种基于AIE分子的潜指纹显现浸泡剂对泡沫上的潜指纹显现
按照实施5的潜指纹显现效果测试方法,将实施例1中制得的潜指纹显现浸泡剂施加在泡沫上潜指纹的显现中,显现结果如图6所示。
实施例11
一种基于AIE分子的潜指纹显现浸泡剂对塑料上的潜指纹显现
按照实施5的潜指纹显现效果测试方法,将实施例1中制得的潜指纹显现浸泡剂施加在塑料上潜指纹的显现中,显现结果如图7所示。
如图1-7所示,指纹图像清晰可见,可观察到指纹细节信息。可见本发明的潜指纹显现浸泡剂在半渗透性和非渗透性材料表面的潜指纹显示中均可展现出高效精度高的潜指纹成像效果。
以上所述,仅为本发明的较佳实施例而已,并非对本发明做任何形式上的限定。凡本领域的技术人员利用本发明的技术方案对上述实施例作出的任何等同的变动、修饰或演变等,均仍属于本发明技术方案的范围内。
Claims (10)
1.一种基于AIE分子的潜指纹显现浸泡剂,其特征在于,包括AIE分子,表面活性剂和去离子水;所述AIE分子、表面活性剂和去离子水的重量比为(1-15):1:(1000-5000);
所述AIE分子包含如下结构中的至少一种,
上述结构式中,R1,R2,R3,R4,R5,R6各自独立地选自氢、卤素、羰基、酰胺基、磷氧基、未取代的C6-C30含氰基芳基、未取代的C3-C30含氰基杂芳基、未取代的C6-C30含氟芳基、未取代的C3-C30含氟杂芳基、未取代的C1-C20烷基、未取代的C1-C20烷氧基、未取代的C2-C20烯基、未取代的C6-C30芳基、未取代的C3-C30杂芳基中的任意一种;
所述表面活性剂为阳离子表面活性剂和阴离子表面活性剂中的至少一种。
2.根据权利要求1所述的基于AIE分子的潜指纹显现浸泡剂,其特征在于,所述未取代的C3-C30杂芳基为未取代的C3-C30氮杂芳基。
3.根据权利要求1所述的基于AIE分子的潜指纹显现浸泡剂,其特征在于,所述阳离子表面活性剂为十六烷基三甲基溴化铵、十四烷基三甲基溴化铵或十二烷基三甲基溴化铵;所述阴离子表面活性剂为十二烷基磺酸钠、十四烷基磺酸钠或十二烷基苯磺酸钠。
4.权利要求1-3任一项所述的基于AIE分子的潜指纹显现浸泡剂的制备方法,其特征在于,包括以下步骤:
将表面活性剂先加入到水中,溶解后再加入AIE分子,并均匀分散。
5.根据权利要求4所述的基于AIE分子的潜指纹显现浸泡剂的制备方法,其特征在于,所述分散利用超声或震荡或磁力搅拌的方式。
6.权利要求1-3任一项所述的基于AIE分子的潜指纹显现浸泡剂的应用,其特征在于,用于潜指纹显现图像,包括以下步骤:
(1)吸取潜指纹显现浸泡剂,将其滴涂在潜指纹所在客体表面位置,或将客体浸泡到指纹显现浸泡剂中;待1-5分钟后,用清水冲掉潜指纹区域未吸附的浸泡剂;
(2)最后以光源对潜指纹所在表面进行照射,即可得到具有高分辨率的潜指纹显现图像。
7.根据权利要求6所述的基于AIE分子的潜指纹显现浸泡剂的应用,其特征在于,所述光源为紫外光源。
8. 根据权利要求7所述的基于AIE分子的潜指纹显现浸泡剂的应用,其特征在于,所述紫外光源的波长范围为250-400 nm。
9.根据权利要求6所述的基于AIE分子的潜指纹显现浸泡剂的应用,其特征在于,所述客体选自半渗透性材料、非渗透性材料。
10.根据权利要求9所述的基于AIE分子的潜指纹显现浸泡剂的应用,其特征在于,所述半渗透性材料选自纸板、泡沫、木板,非渗透性材料选自玻璃、金属、塑料、陶瓷。
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