resumo
A photoactive two-dimensional coordination polymer (2D CP) [Zn2(4-spy)2(bdc)2]n (1) [4-spy = 4-styrylpyridine and H2bdc = 1,4-benzendicarboxylic acid] undergoes a photochemical [2 + 2] cycloaddition reaction upon UV irradiation. Interestingly, the crystals of 1 show different photomechanical effects, such as jumping, swelling, and splitting, during UV irradiation. In addition, the CP was employed for conductivity measurements before and after UV irradiation via current density-voltage characteristics and impedance spectroscopy, which suggest that they are semiconducting in nature and can be used as Schottky diodes. Thus, this work demonstrates the potential dual applications of a 2D CP based on photosalient and conductivity properties. A Zn(ii)-based multifunctional 2D coordination polymer exhibits photomechanical motion and electrical conductivity.
palavras-chave
METAL-ORGANIC FRAMEWORK; 2+2 CYCLOADDITION; SINGLE-CRYSTAL; MOLECULAR-CRYSTALS; SCHOTTKY DIODE; TRANSFORMATION; IMPACTS; FILMS; MOFS
categoria
Chemistry
autores
Khan, S; Das, P; Naaz, S; Brandao, P; Choudhury, A; Medishetty, R; Ray, PP; Mir, MH
nossos autores
Paula Cristina Ferreira da Silva Brandão
Investigador AuxiliarProjectos
CICECO - Aveiro Institute of Materials (UIDB/50011/2020)
CICECO - Aveiro Institute of Materials (UIDP/50011/2020)
Associated Laboratory CICECO-Aveiro Institute of Materials (LA/P/0006/2020)
agradecimentos
M. H. M. is thankful to SERB India for a Core Research Grant (grant no. CRG/2022/001842, dated 19/12/2022) and S. K. thanks CSIR India for awarding a Research Associateship (sanction no. 09/1157(0005)/2019-EMR-I). R. M. thanks IIT Bhilai, IBITF for funding (project code is 4007600). P. B. gratefully acknowledges the financial support of this work by the project CICECO-Aveiro Institute of Materials, UIDB/50011/2020, UIDP/50011/2020 & LA/P/0006/2020, financed by national funds through the FCT/MCTES (PIDDAC). We thank Dr Sesha Vempati, IIT Bhilai, for his support in the measurements of the photoluminescence study.