title: Structural Modulation from 1D Chain to 3D Framework: Improved Thermostability, Insensitivity, and Energies of Two Nitrogen-Rich Energetic Coordination Polymers.
abstract: Two new energetic coordination polymers (CPs) [Pb(BT)(H2O)3]n(1) and [Pb3(DOBT)3(H2O)2]n·(4H2O)n(2) with 1D and 3D structures were synthesized by employing two rational designed ligands, 1H,1'H-5,5'-bitetrazole (H2BT) and 1H,1'H-[5,5'-bitetrazole]-1,1'-diol ligands (DHBT), respectively. Thermal analyses and sensitivity tests show that the 3D architecture reinforces the network of 2 which has higher thermal stability and lower sensitivity than that of 1. Through oxygen-bomb combustion calorimetry the molar enthalpy of formation of 2 is derived to be much higher than that of 1 as well as the reported CPs. Herein, more importantly, the heats of detonation (ΔHdet) were calculated according to the decomposition products of TG-DSC-MS-FTIR simultaneous analyses for the first time. The calculated results show that ΔHdetof 2 is 23% higher than that of 1. This research demonstrates that 3D energetic CP with outstanding energetic properties can be obtained through efficient and reasonable design.
authors: State Key Laboratory of Fluorine & Nitrogen Chemicals, Xi'an Modern Chemistry Research Institute , Xi'an, 710065 Shaanxi, China.|School of Chemical Engineering, Northwest University , Xi'an, 710069 Shaanxi, China.
authors: Zhaoqi
authors: Z
authors: Guo
authors: Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education, Shaanxi Key Laboratory of Physico-Inorganic Chemistry, College of Chemistry & Materials Science, Northwest University , Xi'an, 710127 Shaanxi, China.
authors: Yunlong
authors: Y
authors: Wu
authors: State Key Laboratory of Fluorine & Nitrogen Chemicals, Xi'an Modern Chemistry Research Institute , Xi'an, 710065 Shaanxi, China.
authors: Chongqing
authors: C
authors: Deng
authors: Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education, Shaanxi Key Laboratory of Physico-Inorganic Chemistry, College of Chemistry & Materials Science, Northwest University , Xi'an, 710127 Shaanxi, China.
authors: Guoping
authors: G
authors: Yang
authors: State Key Laboratory of Fluorine & Nitrogen Chemicals, Xi'an Modern Chemistry Research Institute , Xi'an, 710065 Shaanxi, China.
authors: Jiangong
authors: J
authors: Zhang
authors: State Key Laboratory of Fluorine & Nitrogen Chemicals, Xi'an Modern Chemistry Research Institute , Xi'an, 710065 Shaanxi, China.
authors: Zhihua
authors: Z
authors: Sun
authors: School of Chemical Engineering, Northwest University , Xi'an, 710069 Shaanxi, China.
authors: Haixia
authors: H
authors: Ma
authors: State Key Laboratory of Fluorine & Nitrogen Chemicals, Xi'an Modern Chemistry Research Institute , Xi'an, 710065 Shaanxi, China.
authors: Chao
authors: C
authors: Gao
authors: State Key Laboratory of Fluorine & Nitrogen Chemicals, Xi'an Modern Chemistry Research Institute , Xi'an, 710065 Shaanxi, China.
authors: Zhongwei
authors: Z
authors: An