Origin of crystallization suppression in a new amorphous molecular white-light-generating material

BD Klee, B Paulus, JL Vasco, S Hosokawa… - Scripta Materialia, 2022 - Elsevier
BD Klee, B Paulus, JL Vasco, S Hosokawa, JR Stellhorn, S Hayakawa, S Dehnen
Scripta Materialia, 2022Elsevier
The microscopic structure of a new infrared-driven amorphous white-light-generating
material was explored by X-ray diffraction, EXAFS and Reverse Monte Carlo simulation. In
this material, structural disorder appears to be prerequisite for this nonlinear optical effect.
The results are consistent with quantum chemical predictions, but it is also found that the
molecular cores are distorted, which is identified as a crystallization inhibitor. Sulfur atoms
thereby form a uniform vibrational network, which may be responsible for the high capability …
Abstract
The microscopic structure of a new infrared-driven amorphous white-light-generating material was explored by X-ray diffraction, EXAFS and Reverse Monte Carlo simulation. In this material, structural disorder appears to be prerequisite for this nonlinear optical effect. The results are consistent with quantum chemical predictions, but it is also found that the molecular cores are distorted, which is identified as a crystallization inhibitor. Sulfur atoms thereby form a uniform vibrational network, which may be responsible for the high capability of the material to absorb infrared radiation.
Elsevier