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Near-field Scattering Enhancement of Perylene Based Aggregates for Random Lasing
Z.Z.Zhang
University of Science and Technology of China
摘要:
Strong near-field scattering enhancement Near-field (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 confirms the physical simulation results. Moreover, coherent random laser (RL) is triggered from the DPP aggregates in carbon disulfide (CS2). 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 RL. 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.
关键词:  Isolated particles, Aggregates, DPP, Near-field scattering enhancement, Random Laser
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Near-field Scattering Enhancement of Perylene Based Aggregates for Random Lasing
Zhangzhenzhen
University of Science and Technology of China
Abstract:
Strong near-field scattering enhancement Near-field (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 confirms the physical simulation results. Moreover, coherent random laser (RL) is triggered from the DPP aggregates in carbon disulfide (CS2). 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 RL. 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