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Near-Field Scattering Enhancement of Perylene Based Aggregates for Random Lasing
Zhen-zhen Zhang1, Lei-cheng Yin1, Xiao-long Xu1, Jiang-ying Xia2, Kang Xie2, Gang Zou1, Xiao-juan Zhang3, Zhi-jia Hu*2,3,4, Qi-jin Zhang*1
1.CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, Department of Chemistry, Anhui Key Laboratory of Optoelectronic Science and Technology, University of Science and Technology of China, Hefei 230026, China;2.School of Instrument Science and Opto-electronic Engineering, Hefei University of Technology, Hefei 230009, China;3.Aston Institute of Photonic Technologies, Aston University, Birmingham B47ET, UK;4.State Key Laboratory of Environment-friendly Energy Materials, Southwest University of Science and Technology, Mianyang 621000, China
Abstract:
Strong near-field scattering enhancement (NFSE) of polyhedral oligomeric silsesquioxanes (POSS) nanoparticles (NPs) aggregates is found through physical simulation. An aggregation of N,N′-di-[3-(isobutyl polyhedral oligomeric silsesquioxanes) propyl] perylene diimide (DPP) which possesses POSS as scatteres experimentally performs strong NFSE, which con-firms the physical simulation results. Moreover, coherent random laser is triggered from the DPP aggregates in carbon disulfide. It is the NFSE of POSS NPs connected to both ends of DPP through covalent bonds and the NFSE of their aggregation thanks to DPP's aggregation that is responsible for the coherent random laser. So, this work develops a method to improve weak scattering of system through construction of molecules, and opens a road to a variety of novel interdisciplinary investigations, involving molecular designing for disordered photonics.
Key words:  Isolated particles, Aggregates, DPP, Near-field scattering enhancement, Random Laser
FundProject:
苝聚集体随机激光的近场散射增强
张珍珍1, 殷雷铖1, 徐小龙1, 夏江营2, 谢 康2, 邹 纲1, 张晓军3, 胡志家*2,3,4, 张其锦*1
1.中国科学技术大学高分子科学与工程系,中国科学技术大学化学系,中国科学院软物质重点实验室,安徽省光电子科学与技术重点实验室,合肥 230026;2.合肥工业大学光电子工程和仪器科学学院,合肥 230009;3.阿斯顿大学,阿斯顿光子科技研究所,伯明翰 B47ET;4.西南科技大学环境友好材料国家重点实验室,绵阳 621000
摘要:
本文通过物理模拟发现苝聚集体纳米粒子有很强的近场散射. 苝聚集体由异丁基取代聚倍半硅氧烷(POSS)苝(DPP)构成,其理论模拟得到的近场散射增强被实验证实. 同时,由聚集体的二硫化碳溶液激发出相干随机激光. 近场增强源自于通过化学键连接的POSS基团,相干随机激光源自于苝发射团. 本文通过分子设计发展出一种新的随机激光体系,为后续一系列交叉研究打开了大门,相关交叉研究主要涵盖无序光子学的分子设计等领域.
关键词:  单一粒子,聚集体,DPP,近场散射增强,随机激光
DOI:10.1063/1674-0068/cjcp1807167
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