## 1 Introduction  
A metal-organic framework (MOF) is an ordered porous structure obtained using the coordination of organic ligands with metal ions or metal clusters [1; 2; 3]. The large surface area, multiple active sites, high porosity, and structural flexibility enable MOF materials to exhibit excellent performance in multiple fields, such as catalysts [4], sensors [5; 6; 7], bioimaging [8; 9], tumor therapy [10; 11; 12], gas storage or separation [13; 14], and solar fuel conversion [15; 16]. [PERSON] et al. demonstrated that MOF materials can be used effectively for methane storage with a storage capacity of 240 cubic centimeters [17], and then they developed MOF structural materials for highly efficient hydrogen storage [18]. [PERSON] et al. conducted in-depth research on the interaction mechanism between MOF materials and carbon dioxide, and expounded the application prospects of MOF materials for carbon dioxide adsorption, capture, and separation [19; 20; 21]. MOF materials also have unique application advantages in drug delivery [22; 23], and even more MOF nanomaterials have been developed for photodynamic, photothermal, and other treatments of tumors [24; 25; 26; 27]. MOF materials have accessible active sites based on the monodispersity of the constituent molecules in their coordination structure, which can be used as sensors for highly sensitive detection of small molecules and environmental pollutants [28; 29; 30]. Therefore, the construction of organic molecules into MOF structural materials through a certain coordination method has great potential to perform well in various applications. Molecules with a propeller-like structure make up a family of compounds with an aggregation-induced emission (AIE) effect discovered by [PERSON] et al. [31]. Such molecules can restrict the intramolecular rotation through aggregation, and release energy in the form of photoluminescence, thus exhibiting the AIE phenomenon. Compared with the traditional aggregation-caused quenching (ACQ) effect molecules, AIE molecules have unique advantages in optoelectronics, sensing, and biomedical applications [32; 33]. The MOF structure is essentially an aggregation of molecules, and this matrix coordination-induced emission (MCIE) effect has also been verified using MOF materials constructed with tetraphelytheme (TPE) molecules and zinc ions [34]. [PERSON] et al. demonstrated the MCIE effect of AIE molecules using zirconium-based MOF materials, and analyzed their quantum yield and piezofluorochromic properties [35; 36]. However, not all MOF materials constructed from AIE molecules have the MCIE effect, and it has been found that changing the types of metal ions in the MOF structure influences its photoluminescence intensity. When Co and Cu ions are used as metal-coordination ions in the MOF, even the material constructed using AIE molecules exhibits the ACQ phenomenon [37; 38]. This result was verified by means of comparative analysis in our previous work, and the intermolecular ligand-to-metal charge transfer (LMCT) process in the MOF structure was described as the main reason for the ACQ phenomenon [39]. In addition, we found that the guest molecules can affect the photoluminescence of the MOF host. Of course, there are other studies on the applications of host-guest molecules [40; 41; 42]. In this paper, we designed and synthesized a micron-sized MOF sheet with AIE molecules as organic ligands, and identified that organic molecules with amino or sulfhydryl groups can reduce the LMCT process in MOF structures. The organic molecules with both amino and sulfhydryl groups can greatly hinder the LMCT process, resulting in a strong MCIE effect on the MOF sheet originally with the ACQ results. Moreover, the fluorescence generated using this LMCT process can produce a sensitive sensing effect on molecules, even up to \(10^{-9}\) M. These studies have theoretical guiding significance for regulating the energy release mode and photoluminescence intensity of MOF materials.