Abstract Growth of bulk organic NLO crystals is a stupendous task in the field of crystal growth because of its remarkable properties such as better NLO efficiency and rapid response with light due to presence of delocalized electrons than inorganic materials, which could be implemented in the field of photonics. Attempts were made in growing bulk single crystal of novel benzophenone derivatives. Being one of the BP derivatives, 3,4-Diaminobenzophenone (3,4-DABP) was selected and grown as a bulk crystal by slow evaporation growth technique from a mixture of solvents of ethanol and o-xylene in the ratio of 1:3 at ambient temperature. Grown crystals were subjected to characterization studies like single crystal XRD, powder XRD, FTIR analysis, TG/DTA, UV–Vis NIR spectroscopy, Vicker's microhardness testing and NLO studies to reveal their structural, thermal, mechanical and optical properties. Powder XRD studies indicated the pure crystallinity nature of the grown crystals. The presence of various functional groups were analysed from FTIR spectrum. Optical studies revealed that the material can be used in photonics as optical filters. Microhardness study revealed that 3,4-DABP belongs to soft material and also exhibit Reverse Indentation Size Effect (RISE). SHG study confirmed that the frequency conversion efficiency of the crystal 3,4-DABP is 2.3 times that of KDP crystal.

中文翻译：

---

混合溶剂对 3,4-二氨基二苯甲酮的溶质-溶剂相互作用和体积生长的影响：一种用于 NLO 应用的新型二苯甲酮衍生物

摘要 大块有机 NLO 晶体的生长是晶体生长领域的一项艰巨任务，因为它具有比无机材料更好的 NLO 效率和由于离域电子的存在而对光的快速响应等显着特性，可以在晶体生长领域实现。光子学。尝试生长新型二苯甲酮衍生物的块状单晶。作为 BP 衍生物之一，3,4-二氨基二苯甲酮 (3,4-DABP) 被选择并通过缓慢蒸发生长技术从 1:3 的乙醇和邻二甲苯溶剂的混合物中生长为块状晶体在环境温度下。对生长的晶体进行表征研究，如单晶 XRD、粉末 XRD、FTIR 分析、TG/DTA、UV-Vis NIR 光谱、Vicker' s 显微硬度测试和 NLO 研究，以揭示它们的结构、热、机械和光学特性。粉末 XRD 研究表明生长的晶体具有纯结晶性。从 FTIR 光谱分析了各种官能团的存在。光学研究表明，该材料可用作光子学中的滤光片。显微硬度研究表明，3,4-DABP 属于软材料，也表现出反向压痕尺寸效应 (RISE)。SHG研究证实3,4-DABP晶体的变频效率是KDP晶体的2.3倍。光学研究表明，该材料可用作光子学中的滤光片。显微硬度研究表明，3,4-DABP 属于软材料，也表现出反向压痕尺寸效应 (RISE)。SHG研究证实3,4-DABP晶体的变频效率是KDP晶体的2.3倍。光学研究表明，该材料可用作光子学中的滤光片。显微硬度研究表明，3,4-DABP 属于软材料，也表现出反向压痕尺寸效应 (RISE)。SHG研究证实3,4-DABP晶体的变频效率是KDP晶体的2.3倍。