Zn(salen) nano-complex was synthesized by facile hydro/solvothermal route in water as green solvent at various Limes and temperatures without using any surfactant or capping agent. The morphology of the products varied from irregular microcrystals to nanosheets by adjusting the temperature and time of the reaction. Based on the growth process with respect to the morphological structure, a novel growth mechanism is revealed which involves a unique multistep pathway, including reaction-nucleation, aggregation, ccystallization, dissolution-recrystallization, and Ostwald ripening. The photoluminescence properties of the compounds were also examined and exhibited strong fluorescence emissions. (C) 2015 Elsevier By. All rights reserved.