UV crosslinking analyzer is a precision device that induces intermolecular crosslinking reactions through specific wavelength ultraviolet irradiation, and is widely used in fields such as biology, materials science, and medicine. The following provides a detailed explanation from both the principles and usage aspects:
1、 Working principle
-Core mechanism: Utilizing high-energy photons of ultraviolet light to excite the molecular structure in the sample, causing the molecules to absorb energy and undergo electronic transitions, forming free radicals or active intermediates, which in turn trigger chemical bond breakage or recombination, ultimately achieving cross-linking between molecules. This process relies on precise control of the wavelength, intensity, and irradiation time of ultraviolet light.
-System composition: It consists of three parts: ultraviolet light source, sample chamber, and control system. UV light sources include high-pressure mercury lamps, LEDs, or excimer lamps, with emission wavelengths typically at 254 nm, 312 nm, or 365 nm. The sample chamber is made of stainless steel and is equipped with an energy integrator for real-time monitoring of radiation dose; The control system adjusts lighting parameters through a microprocessor and supports multiple modes such as time and energy.
2、 Details of use
-Preparation work
-Environmental requirements: Place the instrument on a stable and vibration free surface, away from flammable materials, and ensure good ventilation.
-Power supply and calibration: Connect the voltage that meets the requirements of the manual, preheat the machine, and perform baseline calibration.
-Sample pretreatment: the liquid sample needs to be filtered to remove impurities, and the solid sample needs to be evenly spread on the membrane or in the gel to avoid the influence of bubbles on the cross-linking effect.
-Operation process
-Parameter setting: Select wavelength, set time or energy threshold according to experimental requirements.
-Sample placement: Place the sample in the center of the exposure room, close the door to trigger the safety interlock device.
-Start and Monitoring: After pressing the "Start" button, the instrument automatically runs and terminates when the set value is reached.
-Emergency response: If an abnormal alarm occurs, immediately press the "STOP" button to cut off the light source.
-Security protection
-Personal protection: Wear fully enclosed lab clothes, UV resistant face shields, and nitrile gloves. It is prohibited to expose the skin to UV rays.
-Equipment protection: Regularly check the effectiveness of interlocking devices, and strictly prohibit blocking heat dissipation holes or forcibly disassembling components.
The Purple Diplomacy Instrument, with its precise energy control and diverse application adaptability, has become a tool for modern scientific research. Following standardized operating procedures can not only improve experimental efficiency, but also ensure the safety of personnel and equipment.