Sooryakala K, Ramalingam S, Maheswari R, Aarthi R
Department of Physics, S.T.E.T. Women's College, Sundarakkottai, Mannargudi, Tamilnadu, India.
Department of Physics, A.V.C. College(Autonomous), Mayiladuthurai, Tamilnadu, India.
Heliyon. 2020 Oct 23;6(10):e05329. doi: 10.1016/j.heliyon.2020.e05329. eCollection 2020 Oct.
The organic composite crystal for 6-methyl 5-nitro Uracil was grown using slow-evaporation method and the crystal quality was checked by observing the peaks in XRD pattern. The molecular structure of 6-methyl 5-nitro Uracil was used to find crystal parameters for determining NLO activity. The appropriate electronic geometrical structure was keenly noted and the transitional energy exchange was studied and thereby fine-tuning of crystal performance was made by adopting suitable electron-accepting and with-drawing substitutional groups. The crystal parameters; a≠b≠c confirmed the orthorhombic lattice pattern. The space group was found as P and Transparency range was observed as 409-1256 nm. The laser measurements were made and laser Damage threshold was estimated at 10 ns[1.08-3 GW/cm]. The scattering characteristics of bond networks over the molecule were observed by studying vibrational characteristics of elemental bonds. The hybrid calculations on DFT methods were made using B3LYP/6-311++(D,P) basis set. The chemical shift was observed and retracing chemical potential was identified from the parametric oscillation. The frontier molecular interactions between ground and excited orbital lobe overlapping segments were noted and type of interaction system was identified. The electronic and protonic transfer energy was measured and the origination point of equivalent chemical potential was acknowledged. The NBMO profile was keenly grafted and the transitional energy was measured at every consumed electronic energy band. The vibrational circular dichroic image for all vibrational regions was sketched and the rate of transmission and absorption ratio was verified from peak intensity.
采用缓慢蒸发法生长了6-甲基-5-硝基尿嘧啶的有机复合晶体,并通过观察XRD图谱中的峰来检查晶体质量。利用6-甲基-5-硝基尿嘧啶的分子结构来寻找晶体参数以确定非线性光学活性。敏锐地注意到合适的电子几何结构,研究了跃迁能量交换,从而通过采用合适的电子接受和吸电子取代基团对晶体性能进行微调。晶体参数a≠b≠c证实了正交晶格模式。发现空间群为P,透明范围为409-1256nm。进行了激光测量,估计激光损伤阈值为10ns[1.08-3GW/cm]。通过研究元素键的振动特性观察了分子上键网络的散射特性。使用B3LYP/6-311++(D,P)基组对DFT方法进行了混合计算。观察到化学位移,并从参数振荡中确定了回溯化学势。记录了基态和激发态轨道叶重叠段之间的前沿分子相互作用,并确定了相互作用系统的类型。测量了电子和质子转移能量,并确认了等效化学势的起始点。敏锐地绘制了非键分子轨道轮廓,并在每个消耗的电子能带处测量了跃迁能量。绘制了所有振动区域的振动圆二色性图像,并从峰值强度验证了透射率和吸收率。