Research On The Mechanism Of Hydrogen Bond Relaxation Under Electric Field Or Molecular Undercoordination

As the basic substance of own hydrogen bond,water is common on the earth.Daily observation and scientific research indicate that water performs differently under electric field or molecular undercoordination,for example,Armstrong bridge and Taylor spray and so on.However,to clarify the anomaly of ice and water still a trouble because of existing immature on the structure of water and hydrogen bonds.In this paper,we attempt to clarify the effects of electric field or molecular untercoordination on hydrogen bonding relaxation based on the quasi tetrahedron structure of water,the asymmetric polarizable coupling double oscillator hydrogen bonding model,hydrogen bonding(0:H-0)cooperativity and BOLS(bond-order-length-strength)theory and to verify them through Raman experiment and finally clarify the anomaly behavior of water and ice under electric field or molecular undercoordination based on the connection of bond parameter and property.All results and conclusions are listed as follows:(1)Water bridge experiment shows that electric field plays a decisive role in the formation and stabilization of water bridge.According to the prediction of capacitor electrification,a radial electric field is formed between the positive and negative poles when electric field is added to water which is directed from the positive to the negative poles.,Raman spectra of different electric fields Under normal temperature and pressure indicates that the applied electric field makes high frequency blue shift and low frequency red shift.Based on bond parameters associated with the performance,the applied electric field increase the melting point of water,young's modulus and the surface tension,reduce the solidification temperature,expand the quasisolid phase boundary of water,therefore,water bridge with elastic,the mist clotting around the wire,the strong surface tension of the water balance to the gravity of bridge and maintain the water bridge stability.(2)According to the view of BOLS theory:the covalent bond of the undercoordinate water molecule on the surface of the water film and bubbles spontaneous contraction,and the nobond is stretched because of the hydrogen bonding which leading to the elongation hydrogen bond.The particle size test and Raman spectra of deionized bubbles preserved for different days demonstrate the existence and stability of bubbles.The results of Raman spectrum of bubble and water film show that the covalent component has blue shift,while the nonbonding component has red shift.Therefore,the molecular undercoordination improve the melting point,the young's modulus of water,reduce the solidification temperature,expand the qunsisolid phase boundary,the water droplets has good elasticity and ice skin is slippy.(3)For soap bubbles,the molecular intervention of the foaming agent further elongates the hydrogen bond in addition to the undercoordination effect of bubbles which improves the elasticity and thermal stability of soap bubbles further.In addition,daily observations and scientific researches have shown that soap bubbles do not fuse with each other when they interact with each other,but form an interface layer.The existence of double bubble structure can prevent the bubble from becoming larger,floating and disappearing.Therefore,compared to ordinary bubbles,the soap bubbles has the more stable effects of molecular undercoordination.