Multichromophoric architectures with wellorganized chromophoric arrangements are of vital importance to gain insights into interchromophoric interactions.Herein,we report a novel heteroleptic self-assembly strategy an...Multichromophoric architectures with wellorganized chromophoric arrangements are of vital importance to gain insights into interchromophoric interactions.Herein,we report a novel heteroleptic self-assembly strategy and construct three achiral and one chiral sandwich-like heterochromophore complexes(Zn_(4)L^(G)L^(A-C)_(2)and Zn_(4)L_(G)L^(D)_(2)).Possible dynamic products,including homoleptic oligomers and isomers,are eliminated,producing achiral complexes with exceptional purity.Isomers are observed in chiral complexes due to the flexible geometry of LD.Perfectly aligned chromophore arrangements with precise spacing and orientations are evidenced by single-crystal X-ray diffraction.The distinct segments in the ligands lead to different interchromophoric interactions.Impressively,energy transfer and tunable emission,including white-light emission,are achieved for Zn_(4)L^(G)L^(A)_(2)and Zn_(4)L^(G)L^(B)_(2).In addition,chirality transfer is observed for Zn_(4)L_(G)L^(D)_(2),due to conformational restriction from chiral LD,leading to chiral rotational conformations of tetraphenylethylene moiety in LG.展开更多
Homobinuclear complex （HCuL）2 （1） （H3L： N-3-carboxylsalicylidene-N＇-salicylaldehyde-1,2-diaminoethane） was obtained from self-organization of the reported complex HCuL, and its crystal structure was determined...Homobinuclear complex （HCuL）2 （1） （H3L： N-3-carboxylsalicylidene-N＇-salicylaldehyde-1,2-diaminoethane） was obtained from self-organization of the reported complex HCuL, and its crystal structure was determined through X-ray diffraction at room temperature. The crystal of complex 1 belongs to monolinic system, the space group Cc, a=2.5326（5） nm, b=0.88861（18） nm, c=1.3738（3） nm, β=96.95（3）°, Z=4, R1=0.0520, wR2=0.1185. （HCuL）2 is a dimeric molecule and has extended phenolic oxygen-bridged structure. In addition, using mononuclear complex HCuL as building blocks, Cu（Ⅱ）-Mg（Ⅱ）-Cu（Ⅱ） heterotrinuclear complex 2 was synthesized, and its crystal structure also has been determined by X-ray analysis. The crystal of complex 2 is of monoclinic system, space group Pc, a=1.1816（2） nm, b=1.5599（3） nm, c=1.9642 （4） nm, β=98.22°, Z=2, R1=0.0701, wR2=0.1498. Each dissymmetricai cell unit of complex 2 contains two heterotrinucler neutral molecules： {[CuL（H2O）]Mg[CuL（CH3OH）]} and {[CuL]Mg[CuL（H2O）]}.展开更多
Without adding feedback to modulate light path system, the dissymmetrical 3×3 coupled optical accelerometer reduces the complexity of the design of light path system. Experiments prove that it can attain good dem...Without adding feedback to modulate light path system, the dissymmetrical 3×3 coupled optical accelerometer reduces the complexity of the design of light path system. Experiments prove that it can attain good demodulation effects. As carrier is not needed in this system, the frequency range of input signal is diminished so as to decrease the sampling frequency of accelerometer. This makes for the system on programmable chip(SOPC) design of digital demodulating system. The upper limit of accelerometer working frequency can reach 3 500 Hz. But affected by the inherent frequency of sensitive components, its working frequency is 10 Hz^1 000 Hz, and the sensitivity is 8.718 0 V/(m·s-2). This accelerometer can detect the dynamic range of acceleration signal real-timely, steadily and accurately, solving the dissymmetrical problem of light path caused by circumstances and the complexity of process.展开更多
基金the National Natural Science Foundation of China(22271116,22071079 for M.W.)the fellowship of the China Postdoctoral Science Foundation(2021M701383 for J.S.)+1 种基金the Natural Science Foundation of Jilin Province(20230101027JC)the staff at the BL17B1 beamline of the National Facility for Protein Science in Shanghai(NFPS),the Shanghai Advanced Research Institute,and CAS for providing technical support in X-ray diffraction data collection and analysis.
文摘Multichromophoric architectures with wellorganized chromophoric arrangements are of vital importance to gain insights into interchromophoric interactions.Herein,we report a novel heteroleptic self-assembly strategy and construct three achiral and one chiral sandwich-like heterochromophore complexes(Zn_(4)L^(G)L^(A-C)_(2)and Zn_(4)L_(G)L^(D)_(2)).Possible dynamic products,including homoleptic oligomers and isomers,are eliminated,producing achiral complexes with exceptional purity.Isomers are observed in chiral complexes due to the flexible geometry of LD.Perfectly aligned chromophore arrangements with precise spacing and orientations are evidenced by single-crystal X-ray diffraction.The distinct segments in the ligands lead to different interchromophoric interactions.Impressively,energy transfer and tunable emission,including white-light emission,are achieved for Zn_(4)L^(G)L^(A)_(2)and Zn_(4)L^(G)L^(B)_(2).In addition,chirality transfer is observed for Zn_(4)L_(G)L^(D)_(2),due to conformational restriction from chiral LD,leading to chiral rotational conformations of tetraphenylethylene moiety in LG.
基金Project supported by the Natural Science Foundation of Henan Province （No. 0311020800）.
文摘Homobinuclear complex （HCuL）2 （1） （H3L： N-3-carboxylsalicylidene-N＇-salicylaldehyde-1,2-diaminoethane） was obtained from self-organization of the reported complex HCuL, and its crystal structure was determined through X-ray diffraction at room temperature. The crystal of complex 1 belongs to monolinic system, the space group Cc, a=2.5326（5） nm, b=0.88861（18） nm, c=1.3738（3） nm, β=96.95（3）°, Z=4, R1=0.0520, wR2=0.1185. （HCuL）2 is a dimeric molecule and has extended phenolic oxygen-bridged structure. In addition, using mononuclear complex HCuL as building blocks, Cu（Ⅱ）-Mg（Ⅱ）-Cu（Ⅱ） heterotrinuclear complex 2 was synthesized, and its crystal structure also has been determined by X-ray analysis. The crystal of complex 2 is of monoclinic system, space group Pc, a=1.1816（2） nm, b=1.5599（3） nm, c=1.9642 （4） nm, β=98.22°, Z=2, R1=0.0701, wR2=0.1498. Each dissymmetricai cell unit of complex 2 contains two heterotrinucler neutral molecules： {[CuL（H2O）]Mg[CuL（CH3OH）]} and {[CuL]Mg[CuL（H2O）]}.
文摘Without adding feedback to modulate light path system, the dissymmetrical 3×3 coupled optical accelerometer reduces the complexity of the design of light path system. Experiments prove that it can attain good demodulation effects. As carrier is not needed in this system, the frequency range of input signal is diminished so as to decrease the sampling frequency of accelerometer. This makes for the system on programmable chip(SOPC) design of digital demodulating system. The upper limit of accelerometer working frequency can reach 3 500 Hz. But affected by the inherent frequency of sensitive components, its working frequency is 10 Hz^1 000 Hz, and the sensitivity is 8.718 0 V/(m·s-2). This accelerometer can detect the dynamic range of acceleration signal real-timely, steadily and accurately, solving the dissymmetrical problem of light path caused by circumstances and the complexity of process.
