Fine Synthesis of Longitudinal/Horizontal-Growth Organic Heterostructures for the Optical Logic Gates

Organic micro/nanocrystals have been intensively studied and great progresses have been achieved in both the modulation of optical/electronical property and the controllable synthesis of single component of low-dimensional materials. Especially, the organic heterostructures (OHSs) are one of the key factors for the multifunctional optoelectronic devices to construct integrated circuits. However, the fine synthesis of OHSs remains a challenge due to the easy occurrence of homogeneous nucleation raised by the weak intermolecular interaction. Herein, a facile solution bottom-up fabrication approach is demonstrated for the longitudinal- and horizontal-growth OHSs through building up blocks of MPY (1,4-phenylene-bis(3-(2-methoxylpyridin-6-yl)acrylonitrile)) nanowires and polymorphic TBPe (2,5,8,11-Tetra-tert-butylperylene) microcrystals by controlling the evaporation rate of solvents. The growth directions of longitudinal and horizontal OHSs are demonstrated to be driven by the face-selective principle and the lowest energy principle, respectively. The directional controllable fabrication method provides a novel strategy for the fine synthesis of OHSs. In addition, three models of optical logic gates 100, 110, and 111 based on these as-prepared OHSs with multiple outputs are constructed, which are the potential candidates for the multifunctional integrated optoelectronics.