Narang Kavita, Garain Swadhin, Iyer Parameswar Krishnan
Department of Chemistry, Indian Institute of Technology, Guwahati, 781039, India.
Department of Chemistry, Govt. Sukhram Nage College Nagri Dhamtari, Chhattishgarh, 493778, India.
Chem Asian J. 2025 Jul;20(14):e202500489. doi: 10.1002/asia.202500489. Epub 2025 Apr 28.
This article investigates the role of heavy halogen atom introduction and alkyl chain modification in organic room temperature phosphorescence (RTP) materials. The study compares the effects of heavy halogen atom introduction on RTP and the influence of alkyl chain modification in two luminogens, viz. ODNI and BrODNI. ODNI, which lacks a heavy halogen atom exhibits a phosphorescence lifetime of ∼212 ms at 77 K, whereas BrODNI containing bromine atom shows significantly shorter phosphorescence lifetime of ∼4.5 ms. The crystal structure of ODNI and theoretical calculations for ODNI and BrODNI are performed to understand the roles of alkyl chains and heavy halogen atoms in RTP. These results provide valuable insights for the design of sustainable energy and optoelectronic materials.
本文研究了重卤素原子引入和烷基链修饰在有机室温磷光（RTP）材料中的作用。该研究比较了重卤素原子引入对RTP的影响以及两种发光体（即ODNI和BrODNI）中烷基链修饰的影响。缺乏重卤素原子的ODNI在77K时的磷光寿命约为212毫秒，而含有溴原子的BrODNI的磷光寿命明显更短，约为4.5毫秒。对ODNI的晶体结构以及ODNI和BrODNI进行理论计算，以了解烷基链和重卤素原子在RTP中的作用。这些结果为可持续能源和光电子材料的设计提供了有价值的见解。
